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Mississippi State University
1.
Harrod, James C.
THE STIRLING ENGINE: THERMODYNAMICS AND APPLICATIONS IN COMBINED COOLING, HEATING, AND POWER SYSTEMS.
Degree: PhD, Mechanical Engineering, 2010, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11042010-124649/ 
;
► The goal of this study is to assess the potential of the Stirling engine in alternative energy applications including combined cooling, heating, and power…
(more)
▼ The goal of this study is to assess the potential of the
Stirling engine in alternative energy applications including combined cooling, heating, and power (CCHP) and novel waste heat recovery (WHR) technologies. A first and second law model is developed to quantify
Stirling engine performance and realize the crucial parameters in
Stirling engine design. In addition, analysis of systems employing the
Stirling engine as a prime mover can help justify particular design interests for the
engine regarding certain applications. A model of a CCHP system is developed with a
Stirling engine prime mover. Sensitivity analysis is performed on the CCHP system to gain a deeper understanding of how each component affects the overall performance of the CCHP system. The main objective of these analyses is to provide information on the feasibility of
Stirling CCHP on the basis of primary energy consumption and cost. Finally, the potential of the
Stirling engine as a waste heat recovery device is investigated. A thermodynamic model is developed to provide estimates of
Stirling engine performance based on an available waste heat stream from any specific heat source, while suggesting practical design constraints on the
engine based on bounds from the second law. These results are provided to strengthen the feasibility of the
Stirling engine as a bottoming prime mover rather than the central power plant.
Advisors/Committee Members: Pedro Mago (chair), Kalyan K. Srinivasan (committee member), Rogelio Luck (committee member), Sundar Krishnan (committee member).
Subjects/Keywords: thermodynamics; CCHP; Stirling engine
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APA (6th Edition):
Harrod, J. C. (2010). THE STIRLING ENGINE: THERMODYNAMICS AND APPLICATIONS IN COMBINED COOLING, HEATING, AND POWER SYSTEMS. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11042010-124649/ ;
Chicago Manual of Style (16th Edition):
Harrod, James C. “THE STIRLING ENGINE: THERMODYNAMICS AND APPLICATIONS IN COMBINED COOLING, HEATING, AND POWER SYSTEMS.” 2010. Doctoral Dissertation, Mississippi State University. Accessed October 15, 2019.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-11042010-124649/ ;.
MLA Handbook (7th Edition):
Harrod, James C. “THE STIRLING ENGINE: THERMODYNAMICS AND APPLICATIONS IN COMBINED COOLING, HEATING, AND POWER SYSTEMS.” 2010. Web. 15 Oct 2019.
Vancouver:
Harrod JC. THE STIRLING ENGINE: THERMODYNAMICS AND APPLICATIONS IN COMBINED COOLING, HEATING, AND POWER SYSTEMS. [Internet] [Doctoral dissertation]. Mississippi State University; 2010. [cited 2019 Oct 15].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11042010-124649/ ;.
Council of Science Editors:
Harrod JC. THE STIRLING ENGINE: THERMODYNAMICS AND APPLICATIONS IN COMBINED COOLING, HEATING, AND POWER SYSTEMS. [Doctoral Dissertation]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11042010-124649/ ;
University of Ontario Institute of Technology
2.
Ranieri, Salvatore.
Influence of sinusoidal motion on Stirling engines.
Degree: 2018, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/1000
► Stirling engines have a high potential to produce renewable energy due to their ability to use a wide range of sustainable heat sources and their…
(more)
▼ Stirling engines have a high potential to produce renewable energy due to their ability to use a wide range of sustainable heat sources and their high theoretical efficiencies. They have not yet achieved widespread use and commercial
Stirling engines have had reduced efficiencies compared to their ideal values. This work shows that a substantial amount of the reduction in efficiency is due to the operation of
Stirling engines using sinusoidal motion and quantities this reduction. A discrete model was developed to perform an isothermal analysis of a 100cc alpha-type
Stirling engine with a 90_ phase angle offset, to demonstrate the impact of sinusoidal motion on the net work and thermal efficiency in comparison to the ideal cycle. The model was adapted to analyze beta and gamma-type
Stirling configurations, and the analysis revealed similar reductions due to sinusoidal motion. Lastly, a mechanically plausible arrangement is presented and analyzed to demonstrate that non-sinusoidal operation can be accomplished.
Advisors/Committee Members: MacDonald, Brendan.
Subjects/Keywords: Stirling engine; Efficiency; Thermodynamics; Sinusoidal
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APA (6th Edition):
Ranieri, S. (2018). Influence of sinusoidal motion on Stirling engines. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/1000
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ranieri, Salvatore. “Influence of sinusoidal motion on Stirling engines.” 2018. Thesis, University of Ontario Institute of Technology. Accessed October 15, 2019.
http://hdl.handle.net/10155/1000.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ranieri, Salvatore. “Influence of sinusoidal motion on Stirling engines.” 2018. Web. 15 Oct 2019.
Vancouver:
Ranieri S. Influence of sinusoidal motion on Stirling engines. [Internet] [Thesis]. University of Ontario Institute of Technology; 2018. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10155/1000.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ranieri S. Influence of sinusoidal motion on Stirling engines. [Thesis]. University of Ontario Institute of Technology; 2018. Available from: http://hdl.handle.net/10155/1000
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Toronto
3.
Farra, Nicolas.
Efficiency and Emissions Study of a Residential Micro–cogeneration System Based on a Stirling Engine and Fuelled by Diesel and Ethanol.
Degree: 2010, University of Toronto
URL: http://hdl.handle.net/1807/25573
► This study examined the performance of a residential micro–cogeneration system based on a Stirling engine and fuelled by diesel and ethanol. An extensive number of…
(more)
▼ This study examined the performance of a residential micro–cogeneration system based on a Stirling engine and fuelled by diesel and ethanol. An extensive number of engine tests were conducted to ensure highly accurate and reproducible measurement techniques. Appropriate energy efficiencies were determined by performing an energy balance for each fuel. Particulate emissions were measured with an isokinetic particulate sampler, while a flame ionization detector was used to monitor unburned hydrocarbon emissions. Carbon monoxide, nitric oxide, nitrogen dioxide, carbon dioxide, water, formaldehyde, acetaldehyde and methane emissions were measured using a Fourier transform infrared spectrometer. When powered by ethanol, the system had slightly higher thermal efficiency, slightly lower power efficiency and considerable reductions in emission levels during steady state operation. To further study engine behaviour, parametric studies on primary engine set points, including coolant temperature and exhaust temperature, were also conducted.
MAST
Advisors/Committee Members: Thomson, Murray J., Mechanical and Industrial Engineering.
Subjects/Keywords: Stirling engine; Cogeneration; Ethanol; 0548
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APA (6th Edition):
Farra, N. (2010). Efficiency and Emissions Study of a Residential Micro–cogeneration System Based on a Stirling Engine and Fuelled by Diesel and Ethanol. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/25573
Chicago Manual of Style (16th Edition):
Farra, Nicolas. “Efficiency and Emissions Study of a Residential Micro–cogeneration System Based on a Stirling Engine and Fuelled by Diesel and Ethanol.” 2010. Masters Thesis, University of Toronto. Accessed October 15, 2019.
http://hdl.handle.net/1807/25573.
MLA Handbook (7th Edition):
Farra, Nicolas. “Efficiency and Emissions Study of a Residential Micro–cogeneration System Based on a Stirling Engine and Fuelled by Diesel and Ethanol.” 2010. Web. 15 Oct 2019.
Vancouver:
Farra N. Efficiency and Emissions Study of a Residential Micro–cogeneration System Based on a Stirling Engine and Fuelled by Diesel and Ethanol. [Internet] [Masters thesis]. University of Toronto; 2010. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/1807/25573.
Council of Science Editors:
Farra N. Efficiency and Emissions Study of a Residential Micro–cogeneration System Based on a Stirling Engine and Fuelled by Diesel and Ethanol. [Masters Thesis]. University of Toronto; 2010. Available from: http://hdl.handle.net/1807/25573
University of Canterbury
4.
Postles, Phillip Anthony.
Construction and testing of a low temperature differential Stirling engine for power generation 2.
Degree: Electrical and Electronic Engineering, 2015, University of Canterbury
URL: http://hdl.handle.net/10092/10839
► This thesis presents the design and construction of a low temperature differential (LTD) Stirling engine for electric power generation. The target energy sources were geothermal,…
(more)
▼ This thesis presents the design and construction of a low temperature differential (LTD) Stirling engine for electric power generation. The target energy sources were geothermal, industrial waste heat or solar heated water. These sources would supply a source temperature of around 90 °C. Assuming that the sink is kept at around 20 °C, the engine was designed based on a temperature difference of approximately 70 °C. The initial design and basic structure of the engine was completed in a previous project utilising first order design methods. The goal was to develop a low cost prototype engine capable of producing up to 500W electrical output power. A novel gamma type engine was proposed
utilising a rotary reciprocating displacer and industrial steam piping to form a low cost pressurised chamber. This project concentrated on advancing the design and construction towards completion with particular emphasis on the electrical control, measurement/instrumentation components, and gas flow through the regenerator. At the completion of this project the displacer piston actuation system has been redesigned. In order to achieve the displacer’s specified 2 ㎐ actuation, both the displacer’s structure and the actuation system were altered. The displacer’s aluminium shell and foam centre were removed and replaced with a pine superstructure coated in depron foam, reducing the moment of inertia from 0.4488 ㎏ ∙ ㎡ to 0.0984 ㎏ ∙ ㎡. A secondary motor was added to the actuation system to increase the actuation power. The gearing ratio was also altered from 10:1 to 2:1 to increase the peak displacer speed. The regenerator was designed and built to suit the unusual wedge shape requirements of
the original design. A ribbed structure was conceived to allow fluid flow to be manipulated within separate sections, producing an even pressure drop over varying regenerator lengths. Simulations were run to optimise both the number of sections and the mass of wire wool to be placed in each segment. The final regenerator design has axial ribs placed at radii
of 93, 134, 192, 276 and 392mm, creating four sections. These sections are filled with 0.68, 0.97, 1.40 and 1.90kg of0 mild steel wire wool.
As Stirling engines are not self-starting the generator was required to be run as a motor when starting the Stirling engine. To achieve bidirectional flow of current within the starter motor/generator control system, a field oriented control (FOC) inverter from Texas Instruments was purchased and set up to run the 1kW, 3 phase, permanent magnet generator in both motor and generation modes. This will allow the Stirling engine to be brought up to speed with the generator operating as a motor and then switch to generation mode when the motoring current falls below a set limit. Both pressure and temperature measurement systems were developed, constructed and tested in order to collect information about the performance of the engine under operation. Three pressure transducer circuits were designed and constructed with measurement ranges of 10 ㎪, ±0.99 ㎪ and…
Subjects/Keywords: Low temperature differential Stirling engine; LTD Stirling engine
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APA (6th Edition):
Postles, P. A. (2015). Construction and testing of a low temperature differential Stirling engine for power generation 2. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/10839
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Postles, Phillip Anthony. “Construction and testing of a low temperature differential Stirling engine for power generation 2.” 2015. Thesis, University of Canterbury. Accessed October 15, 2019.
http://hdl.handle.net/10092/10839.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Postles, Phillip Anthony. “Construction and testing of a low temperature differential Stirling engine for power generation 2.” 2015. Web. 15 Oct 2019.
Vancouver:
Postles PA. Construction and testing of a low temperature differential Stirling engine for power generation 2. [Internet] [Thesis]. University of Canterbury; 2015. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10092/10839.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Postles PA. Construction and testing of a low temperature differential Stirling engine for power generation 2. [Thesis]. University of Canterbury; 2015. Available from: http://hdl.handle.net/10092/10839
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of North Texas
5.
Bagheri, AmirHossein.
Preliminary Analysis of an Innovative Rotary Displacer Stirling Engine.
Degree: 2015, University of North Texas
URL: https://digital.library.unt.edu/ark:/67531/metadc822801/
► Stirling engines are an external combustion heat engine that converts thermal energy into mechanical work that a closed cycle is run by cyclic compression and…
(more)
▼ Stirling engines are an external combustion heat
engine that converts thermal energy into mechanical work that a closed cycle is run by cyclic compression and expansion of a work fluid (commonly air or Helium) in which, the working fluid interacts with a heat source and a heat sink and produces network. The
engine is based on the
Stirling cycle which is a subset of the Carnot cycle. The
Stirling cycle has recently been receiving renewed interest due to some of its key inherent advantages. In particular, the ability to operate with any form of heat source (including external combustion, flue gases, alternative (biomass, solar, geothermal) energy) provides
Stirling engines a great flexibility and potential benefits since it is convinced as engines running with external heat sources. However, several aspects of traditional
Stirling engine configurations (namely, the Alpha, Beta, and Gamma), specifically complexity of design, high cost, and relatively low power to size and power to volume ratios, limited their widespread applications to date. This study focuses on an innovative
Stirling engine configuration that features a rotary displacer (as opposed to common reciprocating displacers), and aims to utilize analytical and numerical analysis to gain insights on its operation parameters. The results are expected to provide useful design guidelines towards optimization. The present study starts with an overview of the
Stirling cycle and
Stirling engines including both traditional and innovative rotary displacer configurations, and their major advantages and disadvantages. The first approach considers an ideal analytical model and implements the well-known Schmidt analysis assumptions for the rotary displacer
Stirling engine to define the effects of major design and operation parameters on the performance. The analytical model resulted in identifying major variables that could affect the
engine performance (such as the dead volume spaces, temperature ratios and the leading phase angle). It was shown that the dead volume could have a drastic effect over the
engine performance and the optimum phase angle of the
engine is 90o. The second approach considers a non-ideal analytical model and aims to identify and account the main sources of energy losses in the cycle to better represent the
engine performance. The study showed that the ideal efficiency and the non-ideal efficiency could have 15% difference that could have as an enormous effect on the
engine performance.
Advisors/Committee Members: Bostanci, Huseyin, Nasrazadane, Seifollah, Foster, Phillip R., Akcayoglu, Azize.
Subjects/Keywords: Stirling engine; Schmidt analysis; thermodynamics; Stirling engines – Design and construction.
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University of Ontario Institute of Technology
6.
Nielsen, Anders S.
Enhancing the effectiveness of Stirling engine regenerators.
Degree: 2019, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/1034
► A discrete heat transfer model is developed to determine which parameters influence the effectiveness of Stirling engine regenerators and quantify how they influence it. It…
(more)
▼ A discrete heat transfer model is developed to determine which parameters influence the effectiveness of
Stirling engine regenerators and quantify how they influence it. It is revealed that the regenerator thermal mass ratio and number of sub-regenerators are the two parameters that influence regenerator effectiveness, and these findings were extended to derive expressions for the regenerator effectiveness and
Stirling engine efficiency. It is determined that a minimum of 19 sub-regenerators are required to attain a regenerator effectiveness of 95%. Experiments validated the heat transfer model, and demonstrated that stacking sub-regenerators, such as wire meshes, provides sufficient thermal resistance to generate a temperature distribution throughout the regenerator. This is the first study to determine how
Stirling engine designers can attain a desired value for the regenerator effectiveness, and/or a desired value for
the
Stirling engine efficiency by selecting appropriate values of regenerator thermal mass ratio and number of sub-regenerators.
Advisors/Committee Members: MacDonald, Brendan.
Subjects/Keywords: Stirling engine; Efficiency; Regenerator; Effectiveness; Heat transfer
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APA (6th Edition):
Nielsen, A. S. (2019). Enhancing the effectiveness of Stirling engine regenerators. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/1034
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nielsen, Anders S. “Enhancing the effectiveness of Stirling engine regenerators.” 2019. Thesis, University of Ontario Institute of Technology. Accessed October 15, 2019.
http://hdl.handle.net/10155/1034.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nielsen, Anders S. “Enhancing the effectiveness of Stirling engine regenerators.” 2019. Web. 15 Oct 2019.
Vancouver:
Nielsen AS. Enhancing the effectiveness of Stirling engine regenerators. [Internet] [Thesis]. University of Ontario Institute of Technology; 2019. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10155/1034.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nielsen AS. Enhancing the effectiveness of Stirling engine regenerators. [Thesis]. University of Ontario Institute of Technology; 2019. Available from: http://hdl.handle.net/10155/1034
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
7.
Li, Ruijie.
Applications of Stirling engine in sustainable development : context-experimental and numerical study : Applications du moteur Stirling dans un contexte de développement durable : étude numérique et expérimentale.
Degree: Docteur es, Energétique, génie des procédés, 2017, Université Paris X – Nanterre
URL: http://www.theses.fr/2017PA100066
► Dans ce travail, un moteur Stirling de type Gamma alimenté par énergie solaire avec une faible différence de température a été étudié numériquement et expérimentalement.…
(more)
▼ Dans ce travail, un moteur
Stirling de type Gamma alimenté par énergie solaire avec une faible différence de température a été étudié numériquement et expérimentalement. Un nouveau modèle appelé Polytropic
Stirling Model with Losses (PSML) a été proposé et appliqué au moteur GPU-3
Stirling. Un cryoréfrigérateur basé sur un moteur
Stirling intégral de type Alpha a été étudié numériquement, après avoir mesuré ses dimensions géométriques au laboratoire. Pour le moteur
Stirling de type gamma du laboratoire, le modèle ait thermodynamique à vitesse finie et le modèle isotherme a été développé, incluant les bilans de masse et d’énergie à travers les différents volumes (compression, régénération et expansion) dans le moteur. Différents types de pertes thermiques et mécaniques ont été considérés dans le modèle afin d'analyser les processus thermodynamiques et les pertes dans le moteur
Stirling. En outre, des études paramétriques sur les performances du moteur
Stirling alimenté à l’énergie solaire ont également été étudiées expérimentalement et numériquement. La comparaison entre les résultats expérimentaux et les résultats de simulation à différents déphasages entre le déplaceur et le piston, et à différentes course de piston montre que le modèle est convaincant dans la prédiction des performances du moteur
Stirling. Basé sur la méthode thermodynamique en dimension physique finie, une méthode d’algorithme génétique multi-objectives, objectifs étant la puissance fournie, le rendement énergétique et le taux de génération d'entropie a été utilisé pour optimiser la fonction et la géométrie du moteur du type Gamma. En comparant avec la méthode d'optimisation écologique, la méthode multi-objectif permet de mieux équilibrer les trois objectifs. Le nouveau modèle (PSML) proposé pour prédire les performances du moteur de type Bêta ou Gamma du moteur
Stirling, il divise l'espace de travail en 5 parties (volume de compression, refroidisseur, régénérateur, chauffage et volume d'extension). Une liaison entre volume de compression et volume d'extension a été ajoutée dans le modèle adiabatique classique du moteur
Stirling. Ainsi, des processus polytropiques ont été considérés dans les volumes de compression et d'expansion du moteur
Stirling. Le moteur
Stirling GPU-3 a été utilisé pour valider le nouveau modèle. Il a été démontré que le nouveau modèle (PSML) prédit correctement la puissance de sortie et le rendement du moteur. Dans la dernière partie de la thèse, un Cryorefroidisseur
Stirling de type Alpha, a été étudié en utilisant un modèle isotherme prenant en considération différentes pertes. Les volumes de compression et d'expansion sont considérés isothermes, et la variation de la température du régénérateur est considéré linéaire. Les bilans d'énergie et d'exergie du Cryorefroidisseur ont été réalisés, et l'effet de divers paramètres sur la performance (puissance de refroidissement et puissance mécanique consommée) est étudié. Les résultats de la simulation pour PPG-102
Stirling cryocooler ont été comparés avec deux autres résultats…
Advisors/Committee Members: Grosu, Lavinia (thesis director).
Subjects/Keywords: Moteur Stirling; Réfrigérateur cryogénique Stirling; Isotherme; Polytroptique; Multi-Objectifs optimisation; Exergie; Stirling engine; Stirling cryocooler; Isothermal; Polytropic; Multi-Objective optimization; Exergy
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, R. (2017). Applications of Stirling engine in sustainable development : context-experimental and numerical study : Applications du moteur Stirling dans un contexte de développement durable : étude numérique et expérimentale. (Doctoral Dissertation). Université Paris X – Nanterre. Retrieved from http://www.theses.fr/2017PA100066
Chicago Manual of Style (16th Edition):
Li, Ruijie. “Applications of Stirling engine in sustainable development : context-experimental and numerical study : Applications du moteur Stirling dans un contexte de développement durable : étude numérique et expérimentale.” 2017. Doctoral Dissertation, Université Paris X – Nanterre. Accessed October 15, 2019.
http://www.theses.fr/2017PA100066.
MLA Handbook (7th Edition):
Li, Ruijie. “Applications of Stirling engine in sustainable development : context-experimental and numerical study : Applications du moteur Stirling dans un contexte de développement durable : étude numérique et expérimentale.” 2017. Web. 15 Oct 2019.
Vancouver:
Li R. Applications of Stirling engine in sustainable development : context-experimental and numerical study : Applications du moteur Stirling dans un contexte de développement durable : étude numérique et expérimentale. [Internet] [Doctoral dissertation]. Université Paris X – Nanterre; 2017. [cited 2019 Oct 15].
Available from: http://www.theses.fr/2017PA100066.
Council of Science Editors:
Li R. Applications of Stirling engine in sustainable development : context-experimental and numerical study : Applications du moteur Stirling dans un contexte de développement durable : étude numérique et expérimentale. [Doctoral Dissertation]. Université Paris X – Nanterre; 2017. Available from: http://www.theses.fr/2017PA100066
University of Canterbury
8.
Gopal, Vinod Kumar.
Active Stirling Engine.
Degree: Electrical and Computer Engineering, 2012, University of Canterbury
URL: http://hdl.handle.net/10092/7306
► Micro Combined Heat and Power systems or microCHP systems generate heat and electricity for a home. Stirling engines are widely used as prime movers in…
(more)
▼ Micro Combined Heat and Power systems or microCHP systems generate heat and electricity for a home. Stirling engines are widely used as prime movers in microCHP applications. Stirling engine is an external combustion engine having an enclosed working fluid (as helium) that is alternately compressed and expanded to operate a piston. The displacer shuttles the working fluid between the hot and cold ends. The piston is coupled to a transmission and to an electrical machine to generate power. Conventional Stirling engines are not controllable to a great degree. The piston and displacer are connected to the same crank and they maintain the same phase difference throughout the cycle. Also the piston and displacer are normally constructed to move in a sinusoidal fashion.
The Active Stirling Engine is a new concept introduced in this thesis which has a free displacer. The displacer is driven separately compared to a coupled drive in conventional Stirling engines. The displacer motion can be non-linear with dwell at each ends of the stroke, opening up the possibilities to increase the pressure volume diagram which indicates the work done by the engine. A separately driven displacer also allows introducing phase control and stroke control to improve the controllability of a Stirling engine.
This thesis examines the effect of non-linear displacer motion and phase control of the displacer on Stirling engine performance. Simulations are performed in Sage, the leading Stirling engine simulation software, to understand the effect of displacer phase control. A test rig is constructed with the actively controlled displacer connected to a linear machine controlled by a programmable servo. Heat is applied to the test rig though an electric heating coil. The test rig is charged with nitrogen at 20Bar pressure. The power piston is connected to a rotating electrical machine via the transmission. The rotating electrical machine is used to start the engine and to act as the generator.
The test rig is instrumented to determine the linear position of the displacer and piston, angular position of the rotating electrical machine shaft, temperatures, pressures and flow. A LabVIEW™ based data acquisition system is set up to capture data from the test rig. Data is collected at various test cases. The simulation result is compared against post processed data.
An efficiency improvement of 15% is achieved using this method and is demonstrated experimentally. Applications in micro combined heat and power systems utilising the improved efficiency due to non linear motion and controllability due to phase control are explored in this thesis.
Subjects/Keywords: Active Stirling Engine; phase control of Stirling engine; non-linear control of Stirling engine; microCHP control; high efficiency Stirling engine; hybrid Stirling engine; displacer control; dwell control Stirling engine; displacer dwell
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APA ·
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Manager
APA (6th Edition):
Gopal, V. K. (2012). Active Stirling Engine. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/7306
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gopal, Vinod Kumar. “Active Stirling Engine.” 2012. Thesis, University of Canterbury. Accessed October 15, 2019.
http://hdl.handle.net/10092/7306.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gopal, Vinod Kumar. “Active Stirling Engine.” 2012. Web. 15 Oct 2019.
Vancouver:
Gopal VK. Active Stirling Engine. [Internet] [Thesis]. University of Canterbury; 2012. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10092/7306.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gopal VK. Active Stirling Engine. [Thesis]. University of Canterbury; 2012. Available from: http://hdl.handle.net/10092/7306
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Canterbury
9.
Lloyd, Caleb Charles.
A Low Temperature Differential Stirling Engine for Power Generation.
Degree: Department of Electrical and Computer Engineering, 2009, University of Canterbury
URL: http://hdl.handle.net/10092/2916
► There are many sources of free energy available in the form of heat that is often simply wasted for want of an effective way to…
(more)
▼ There are many sources of free energy available in the form of heat that is often simply wasted for want of an effective way to convert it into useful energy such as electricity. The aim of this research project is to design and build a low temperature differential Stirling engine capable of generating electric power from heat sources such as waste hot water or geothermal springs.
The engine that has been developed is a research prototype model of a new type of design featuring a rotating displacer which is actuated by a pair of stepper motors. The rotating displacer design enables the use of readily available and comparatively cheap and robust steam pipe as the housing for the engine, and it also avoids problems associated with sealing and heat exchange that would be present in a large engine of a more traditional configuration. Owing to the fact that this engine is a research prototype, it has the ability to have some of its critical operating parameters such as phase angle and stroke length adjusted to investigate the effects on performance. When the next phase of development takes place most of these parameters will be fixed at the optimum values which will make manufacture cheaper and easier.
Unfortunately, construction of the prototype engine has not been completed at the time of writing so no power producing results have been achieved; however thorough results are presented on the operation of the control system for the stepper motors which actuate the displacer. Additionally, after a thorough history and background of Stirling engines was researched, the understanding gained of how these engines work has enabled a design process to take place which has hopefully led to a successful design. Analysis of various aspects of the engine have been carried out and results look promising for the engine to produce around 500 Watts of electrical power output whilst running on hot water up to around 90°C.
Subjects/Keywords: Stirling Engine; geothermal power; renewable energy; alternative energy; heat engine; thermodynamics
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APA (6th Edition):
Lloyd, C. C. (2009). A Low Temperature Differential Stirling Engine for Power Generation. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/2916
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lloyd, Caleb Charles. “A Low Temperature Differential Stirling Engine for Power Generation.” 2009. Thesis, University of Canterbury. Accessed October 15, 2019.
http://hdl.handle.net/10092/2916.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lloyd, Caleb Charles. “A Low Temperature Differential Stirling Engine for Power Generation.” 2009. Web. 15 Oct 2019.
Vancouver:
Lloyd CC. A Low Temperature Differential Stirling Engine for Power Generation. [Internet] [Thesis]. University of Canterbury; 2009. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10092/2916.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lloyd CC. A Low Temperature Differential Stirling Engine for Power Generation. [Thesis]. University of Canterbury; 2009. Available from: http://hdl.handle.net/10092/2916
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Purdue University
10.
Mathur, Adhiraj B.
STIRLOCHARGER POWERED BY EXHAUST HEAT FOR HIGH EFFICIENCY COMBUSTION AND ELECTRIC GENERATION.
Degree: MSME, Engineering Technology, 2015, Purdue University
URL: https://docs.lib.purdue.edu/open_access_theses/1153
► Stirling engines have been in existence since the early 1900s, and have been of little study in the recent years. Stirling engines are low power,…
(more)
▼ Stirling engines have been in existence since the early 1900s, and have been of little study in the recent years.
Stirling engines are low power, heat engines which work on the principle of a temperature differential between the hot and cold sides. This thesis will look into the integration of a
Stirling engine onto a turbocompressor for automotive applications calling the device a Stirlocharger.
Advisors/Committee Members: Haiyan Zhang, William Hutzel, Xiumin Diao.
Subjects/Keywords: Inernal Combustion Engine; Stirling Engine; Stirlocharger; Supercharger; Turbocharger; Waste Heat Recovery
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APA (6th Edition):
Mathur, A. B. (2015). STIRLOCHARGER POWERED BY EXHAUST HEAT FOR HIGH EFFICIENCY COMBUSTION AND ELECTRIC GENERATION. (Thesis). Purdue University. Retrieved from https://docs.lib.purdue.edu/open_access_theses/1153
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mathur, Adhiraj B. “STIRLOCHARGER POWERED BY EXHAUST HEAT FOR HIGH EFFICIENCY COMBUSTION AND ELECTRIC GENERATION.” 2015. Thesis, Purdue University. Accessed October 15, 2019.
https://docs.lib.purdue.edu/open_access_theses/1153.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mathur, Adhiraj B. “STIRLOCHARGER POWERED BY EXHAUST HEAT FOR HIGH EFFICIENCY COMBUSTION AND ELECTRIC GENERATION.” 2015. Web. 15 Oct 2019.
Vancouver:
Mathur AB. STIRLOCHARGER POWERED BY EXHAUST HEAT FOR HIGH EFFICIENCY COMBUSTION AND ELECTRIC GENERATION. [Internet] [Thesis]. Purdue University; 2015. [cited 2019 Oct 15].
Available from: https://docs.lib.purdue.edu/open_access_theses/1153.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mathur AB. STIRLOCHARGER POWERED BY EXHAUST HEAT FOR HIGH EFFICIENCY COMBUSTION AND ELECTRIC GENERATION. [Thesis]. Purdue University; 2015. Available from: https://docs.lib.purdue.edu/open_access_theses/1153
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
11.
Craun, Mitchel John.
Modeling and Control of an Actuated Stirling Engine.
Degree: 2015, University of California – eScholarship, University of California
URL: http://www.escholarship.org/uc/item/2tk2v9kj
► This work proposes a new Stirling engine design which we refer to as an actuated Stirling engine. The thermodynamic cycle which drives the engine is…
(more)
▼ This work proposes a new Stirling engine design which we refer to as an actuated Stirling engine. The thermodynamic cycle which drives the engine is controlled by the motion of the displacer piston. In traditional designs this motion is a result the design parameters of the engine. In the Beta engine design the motion of the displacer is determined by the design of the flywheel, while in a free piston design the motion is determined by the restorative force applied to the displacer (be that from a gas spring used in some designs or a mechanical spring used in others). This work proposes a new design wherein the displacer motion is directly controlled via an actuator. This allows for more direct control over the thermodynamic process which drives the engine. To answer the question of how well this engine design compares to a more traditional engine, the best possible design of both engines are compared to one another. This requires optimizing not only the proposed design, but the more traditional design as well. The traditional Beta engine design is chosen as the benchmark with which the actuated design is compared to. Optimizing the design of the Beta engine is a standard parameter optimization problem, as the motion of the pistons is determined by the flywheel parameters. Optimizing the actuated engine is more difficult as it requires finding the optimal trajectory of the displacer, which is an optimal control problem.This work is divided into two sections. In the first section the problem of optimally designing both the actuated and Beta engine designs is solved using a very simple of the Stirling engine, the isothermal (or Schmidt) model. In the second section the same design problem is solved but with a much higher fidelity engine model. The large state dimension of the high fidelity model makes it ill suited for use in an optimization algorithm. To resolve this, a method of model reduction is proposed and applied to the high fidelity model to yield a reduced model more suitable for use in an optimization algorithm. For both the simple isothermal and high fidelity models it is shown that the actuated design has the potential to significantly outperform the more traditional Beta engine design.
Subjects/Keywords: Mechanical engineering; Engine; Model; Optimization; Reduction; Stirling Engine
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APA ·
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APA (6th Edition):
Craun, M. J. (2015). Modeling and Control of an Actuated Stirling Engine. (Thesis). University of California – eScholarship, University of California. Retrieved from http://www.escholarship.org/uc/item/2tk2v9kj
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Craun, Mitchel John. “Modeling and Control of an Actuated Stirling Engine.” 2015. Thesis, University of California – eScholarship, University of California. Accessed October 15, 2019.
http://www.escholarship.org/uc/item/2tk2v9kj.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Craun, Mitchel John. “Modeling and Control of an Actuated Stirling Engine.” 2015. Web. 15 Oct 2019.
Vancouver:
Craun MJ. Modeling and Control of an Actuated Stirling Engine. [Internet] [Thesis]. University of California – eScholarship, University of California; 2015. [cited 2019 Oct 15].
Available from: http://www.escholarship.org/uc/item/2tk2v9kj.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Craun MJ. Modeling and Control of an Actuated Stirling Engine. [Thesis]. University of California – eScholarship, University of California; 2015. Available from: http://www.escholarship.org/uc/item/2tk2v9kj
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
12.
Vinicius Guimarães da Cruz.
Desenvolvimento experimental de um motor stirling tipo gama.
Degree: 2012, Universidade Federal da Paraíba
URL: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2538
► O presente trabalho consiste no desenvolvimento experimental de um motor Stirling tipo gama. São apresentadas inicialmente as diferentes configurações deste tipo de motor (alfa, gama…
(more)
▼ O presente trabalho consiste no desenvolvimento experimental de um motor Stirling tipo gama. São apresentadas inicialmente as diferentes configurações deste tipo de motor (alfa, gama e beta), a definição do ciclo de Stirling e a modelagem matemática para cada configuração. Uma análise matemática é feita através da teoria de Schmidt, que é um método baseado na compressão e expansão isotérmica de um gás ideal, implementada em programa computacional permitindo determinar a dependência entre os parâmetros construtivos e de funcionamento do motor. A revisão bibliográfica contempla as principais configurações de motores Stirling e várias condições de funcionamento, alimentados por diversos tipos de combustíveis. A parte experimental do trabalho é a montagem de um protótipo de motor Stirling tipo gama sem regenerador tendo o ar como fluido de trabalho, utilizando resistências elétricas como fonte de calor e um fluxo de água a temperatura ambiente para o resfriamento do trocador de calor de compressão. Os testes do motor serão realizados a pressão atmosférica, para temperaturas de 100 a 600 C e rotações de 100 a 400 rpm, os resultados são apresentados em gráficos e discutidos.
The current paper develops an experimental Stirling engine Gama type. Different settings of this type of engine are presented (alpha, beta and gamma), along with the Stirling Cycle Definition and the mathematical modeling for each setting. Its been Proceed a mathematical analysis based on the Stirling Theory, which is the method based upon the isothermical compression and expansion of an ideal gas, put to analysis by a computer software, determining the dependency between the engines construction and functioning parameters. Bibliography used takes over the main Stirling engine settings and various working conditions, fed by a numerous types of fuels. The experimental part of the paper is assembling of a Stirling engine gamma type containing no regenerator, therefore, having the air as its working fluid, using electrical resistances as heat source, also a water jet at ambiance temperature to cool down the compression and heat exchanger. Engine tests were performed at atmospheric pressure, temperatures from 100 to 600 C, 100 to 400 rpm rotations. The results are presented in graphics and are questioned.
Advisors/Committee Members: José Maurício Alves de Matos Gurgel.
Subjects/Keywords: Teorema de Schmidt; Ciclo de Stirling; Motor de ar quente; Motor de Stirling; MECANICA, ELASTICIDADE E REOLOGIA; Schmidts Theory; Stirling Cycle; Stirling Engine; Hot Air Engine
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APA (6th Edition):
Cruz, V. G. d. (2012). Desenvolvimento experimental de um motor stirling tipo gama. (Thesis). Universidade Federal da Paraíba. Retrieved from http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2538
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Cruz, Vinicius Guimarães da. “Desenvolvimento experimental de um motor stirling tipo gama.” 2012. Thesis, Universidade Federal da Paraíba. Accessed October 15, 2019.
http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2538.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cruz, Vinicius Guimarães da. “Desenvolvimento experimental de um motor stirling tipo gama.” 2012. Web. 15 Oct 2019.
Vancouver:
Cruz VGd. Desenvolvimento experimental de um motor stirling tipo gama. [Internet] [Thesis]. Universidade Federal da Paraíba; 2012. [cited 2019 Oct 15].
Available from: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2538.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cruz VGd. Desenvolvimento experimental de um motor stirling tipo gama. [Thesis]. Universidade Federal da Paraíba; 2012. Available from: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2538
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
13.
Luis Paulo Silveira Machado.
Propagação do momento linear e energia cinética em cadeias granulares afiladas.
Degree: 2011, Universidade Federal da Paraíba
URL: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2536
► Recentemente, cadeias granulares afiladas tem sido objeto de estudo para o desenvolvimento de dispositivos absorvedores de impacto (ondas de choque). A caracterıstica deste sistema em…
(more)
▼ Recentemente, cadeias granulares afiladas tem sido objeto de estudo para o desenvolvimento de dispositivos absorvedores de impacto (ondas de choque). A caracterıstica deste sistema em atenuar ondas de choque (pulsos de momento linear), torna este material um excelente candidato para tais absorvedores. Assim, vários estudos neste sentido foram realizados, porem a maioria são de caráter numérico e, alguns, analıticos. Todavia, as aproximaçoes analıticas apresentadas não demonstram bons ajustes com soluções numericas. Neste trabalho estudamos analiticamente a propagação do momento linear e energia cinetica em cadeias afiladas unidimensionais de graos esfericos que interagem segundo o potencial de Hertz. Aplicamos a aproximaçao binaria, baseada na suposiçao que a energia transferida ao longo da cadeia ocorre atraves de colisoes sucessivas entre duas partıculas. Estudamos quatro configuraçoes de afilamento: linear para frente, exponencial para frente, linear para tras e exponencial para tras. Com a Teoria Binaria, prevemos corretamente as tendencias de aumento e diminuiçao das propagaçoes do momento linear e energia cinetica. Contudo, para capturarmos os valores corretos das amplitudes dos pulsos dessas grandezas desenvolvemos uma correçao numerico-analıtica para as velocidades das partıculas. Confrontamos os resultados com soluçoes numericas das equaçoes de movimento, onde utilizamos o metodo de Runge-Kutta de quarta ordem. Os resultados demonstram: bom acordo entre as teorias analıtica e numerica; as cadeias afiladas exponencialmente para frente são as mais indicadas nos projetos de absorvedores (apresentam decaimento exponencial do momento linear); um cenario mais fraco para a propagação da energia cinetica (devido a dependencia quadratica com a velocidade), porem o momento linear e a grandeza relevante no contexto de impactos. Alem disso, obtivemos bom acordo com resultados experimentais apresentados por F. Melo e colaboradores (2006). Dessa forma, apresentamos expressoes analıticas que capturam corretamente as propagaçoes de momento linear e energia cinetica em cadeias granulares afiladas. Estes sistemas, realmente demonstram serem excelentes para absorver ondas de choque, atenuando pulsos de momento linear e saturando pulsos de energia cinetica.Uma extensao deste trabalho sera estudar cadeias decoradas afiladas com pre-compressao, que permitem a absorçao de ondas de choque com numero menor de graos nas cadeias (cadeias curtas).
Recently, tapered granular chains have been studied for the development of impact-absorbing devices (shock waves). The characteristic of this system to mitigate shock waves (pulses of linear momentum), makes this material an excellent candidate for such absorbers. Therefore, many studies have been conducted in this direction, but most are numeric character, and some analytical. However, the analytical approximations presented do not show good fits with numerical solutions. In this work we study analytically the propagation of linear momentum and…
Advisors/Committee Members: Alexandre da Silva Rosas.
Subjects/Keywords: cadeia granular afilada; propagação de pulsos; energia cinética; momento linear; FISICA; Stirling Engine; Hot Air Engine; Stirling Cycle; Schmidts Theory
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APA (6th Edition):
Machado, L. P. S. (2011). Propagação do momento linear e energia cinética em cadeias granulares afiladas. (Thesis). Universidade Federal da Paraíba. Retrieved from http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2536
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Machado, Luis Paulo Silveira. “Propagação do momento linear e energia cinética em cadeias granulares afiladas.” 2011. Thesis, Universidade Federal da Paraíba. Accessed October 15, 2019.
http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2536.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Machado, Luis Paulo Silveira. “Propagação do momento linear e energia cinética em cadeias granulares afiladas.” 2011. Web. 15 Oct 2019.
Vancouver:
Machado LPS. Propagação do momento linear e energia cinética em cadeias granulares afiladas. [Internet] [Thesis]. Universidade Federal da Paraíba; 2011. [cited 2019 Oct 15].
Available from: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2536.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Machado LPS. Propagação do momento linear e energia cinética em cadeias granulares afiladas. [Thesis]. Universidade Federal da Paraíba; 2011. Available from: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2536
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
14.
Němec, Jan.
Studie Stirlingova motoru
.
Degree: 2013, Brno University of Technology
URL: http://hdl.handle.net/11012/27627
► Tato práce se zabývá konstrukčním řešením stirlingova motoru s beta modifikací za zvýšením termické účinnosti regenerátoru. V této práci je snahou o navrhnutí regenerátoru, respektive…
(more)
▼ Tato práce se zabývá konstrukčním řešením stirlingova motoru s beta modifikací za zvýšením termické účinnosti regenerátoru. V této práci je snahou o navrhnutí regenerátoru, respektive navrhnutí cest pracovního media přes ohřívák a tepelný výměník až do chladné komory. To vše za použití různých konstrukčních prvků. Dále se tato práce zabývá pevnostní analýzou s využitím počítačových softwaru.; This work deals with the structural design of the
Stirling engine beta modifications for increasing the thermal efficiency of the regenerator. This work is an attempt to propose a regenerator, or propose ways of working fluid through the heater and the heat exchanger to cool the chamber. All using different design elements. Furthermore, this work deals with stress analysis using computer software.
Advisors/Committee Members: Kaplan, Zdeněk (advisor).
Subjects/Keywords: Robert Stirling;
Stirlingův motor;
beta modifikace Stirlingova motoru;
Schmidtova metoda pro beta modifikaci;
regenerátor Stirlingova motoru.;
Robert Stirling;
Stirling engine;
beta Stirling engine modifications;
Schmidt method for beta modification;
Stirling engine regenerator.
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APA (6th Edition):
Němec, J. (2013). Studie Stirlingova motoru
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/27627
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Němec, Jan. “Studie Stirlingova motoru
.” 2013. Thesis, Brno University of Technology. Accessed October 15, 2019.
http://hdl.handle.net/11012/27627.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Němec, Jan. “Studie Stirlingova motoru
.” 2013. Web. 15 Oct 2019.
Vancouver:
Němec J. Studie Stirlingova motoru
. [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/11012/27627.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Němec J. Studie Stirlingova motoru
. [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/27627
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Cleveland State University
15.
Vodhanel, Julie.
Characterization of Performance of a 3D Printed Stirling
Engine Through Analysis and Test.
Degree: MSin Mechanical Engineering, Washkewicz College of Engineering, 2016, Cleveland State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=csu1484221919434595
► This thesis involves the fusion of two technologies, Stirling engines and additivemanufacturing. The project began by building a Stirling engine primarily out of 3D printed…
(more)
▼ This thesis involves the fusion of two technologies,
Stirling engines and additivemanufacturing. The project began by
building a
Stirling engine primarily out of 3D printed parts.
Methods to measure the power output were designed and built with a
combination of 3D printed and off the shelf parts. The
Stirling
engine was tested to see if there was a correlation to analysis
results, and a regenerator was installed to determine the effect on
performance for this relatively low temperature
engine. Finally,
variations in test operation and the use of heat sinks were used to
find a combination that will allow the unit to run more
reliably.One challenge of the 3D printed parts was the durability
when subjected to heat and assembly loads, especially over multiple
rebuilds. However, the convenience of 3Dprinting made it possible
to print replacement parts easily. New designs and assemblies were
also created as a part of the effort to develop a power measurement
system.Power output was measured and corresponded to analysis
predictions. Testing was conducted with a hot plate temperature of
349K (168 F) and a cold plate temperature of 308K (94 F), which
corresponds to a Temperature Ratio of 1.13. Rate of rotation was
150 RPM, or 2.5 Hz. The net power output was measured to be 3.1mW.
Adding that to the losses attributed to
engine friction resulted in
a gross power output of 17mW, which was close to the analysis
prediction of 15mW. Regenerator testing showed that using a
regenerator, on average, doubled the speed of rotation at the same
temperature ratio. However, the regenerator was detrimental to long
term operation because without active cooling, the cold plate was
unable to dissipate the heat efficiently enough. Increasing the
cold side heat transfer to ambient would be essential in increasing
reliability. The addition of heatsinks to the cold side was tested
to determine the effectiveness, with positive results. The
heatsinks that were used in testing were also analyzed, and it was
determined that the spacing was too narrow for optimum performance.
For future designs, custom heatsinks could be used that maximize
the natural convection of the cold side, or a method developed to
provide active cooling.
Advisors/Committee Members: Ibrahim, Mounir (Committee Chair).
Subjects/Keywords: Mechanical Engineering; Stirling Engine; 3D Printed; Additive Manufacturing
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APA (6th Edition):
Vodhanel, J. (2016). Characterization of Performance of a 3D Printed Stirling
Engine Through Analysis and Test. (Masters Thesis). Cleveland State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=csu1484221919434595
Chicago Manual of Style (16th Edition):
Vodhanel, Julie. “Characterization of Performance of a 3D Printed Stirling
Engine Through Analysis and Test.” 2016. Masters Thesis, Cleveland State University. Accessed October 15, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=csu1484221919434595.
MLA Handbook (7th Edition):
Vodhanel, Julie. “Characterization of Performance of a 3D Printed Stirling
Engine Through Analysis and Test.” 2016. Web. 15 Oct 2019.
Vancouver:
Vodhanel J. Characterization of Performance of a 3D Printed Stirling
Engine Through Analysis and Test. [Internet] [Masters thesis]. Cleveland State University; 2016. [cited 2019 Oct 15].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=csu1484221919434595.
Council of Science Editors:
Vodhanel J. Characterization of Performance of a 3D Printed Stirling
Engine Through Analysis and Test. [Masters Thesis]. Cleveland State University; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=csu1484221919434595
Stellenbosch University
16.
Joubert, Louis Hoogenhout.
Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications.
Degree: MSc, Electrical and Electronic Engineering, 2015, Stellenbosch University
URL: http://hdl.handle.net/10019.1/96849
► ENGLISH ABSTRACT: The design optimisation of a linear oscillatory electric generator for application in freepiston Stirling engines is described in this thesis. A basic overview…
(more)
▼ ENGLISH ABSTRACT: The design optimisation of a linear oscillatory electric generator for application in freepiston
Stirling engines is described in this thesis.
A basic overview of free-piston Stirling engine technology is given by firstly providing a
brief description of the operation of the heat engine. The applications of free-piston Stirling
engines in industry are given and the proposed future applications are described.
Different types of electrical machine designs from industry and academia are evaluated
in a literature study. A classification structure is also proposed based on the magnetic flux
variation within the designs.
Based on the literature study, a transverse flux, single-phase, moving magnet, tubular
topology was chosen for investigation.
Athree dimensional finite element simulation was chosen as the most appropriatemethod
to model the linear electrical machine. A commercial simulation package was called from
a simulation script and the outputs from the finite element simulation were again used to
calculate the electrical machine performance parameters using the instantaneous voltageand
current values.
A sequential quadratic programming algorithm was used to perform optimisation of
the machine topologies, with the optimisation variables being dimensional parameters that
describe the machine geometry and the goal of the optimisation to minimise the active mass
of the machine, while maintaining preset minima for the output power and the efficiency.
The machine was optimised for a number of different translator configurations and the
different configurations were analysed and compared. It was found that a quasi-Halbach
arrangement of the permanent magnets yielded the lowest overall active mass. A comparative
study is also presented, where this quasi-Halbach variant is compared to a commercial
machine. It was found that the linear machine design with a quasi-Halbach arrangement
compares well with the commercial machine.
A prototype and test bed was designed and constructed. Due to manufacuring difficulties
however, the machine could not be completed in time for testing.
AFRIKAANSE OPSOMMING: Die ontwerpsoptimering van ’n lineêre ossillerende elektriese generator vir toepassing in
vrysuier Stirling enjins word beskryf in hierdie tesis.
’n Basiese oorsig van vrysuier Stirling enjin tegnologie word gegee deur eerstens ’n kort
beskrywing te gee van die werking van die hitte-enjin. Die aanwending van vrysuier Stirling
enjins in industrie word gegee en voorgestelde toekomstige toepassings word beskryf.
Verskillende tipes elektriese masjien ontwerpe vanuit die industrie en die akademie word
geëvalueer in ’n literatuurstudie. ’n Klassifiseringstruktuur, gebaseer op die magnetiese
vloedverandering in die ontwerpe, word ook voorgestel.
’n Transverse vloed, enkelfase, bewegende magneet, tubulêre topologie is gekies vir die
ondersoek, gebaseer op die onder andere die literatuurstudie.
’n Drie-dimensionele eindige element simulasie is gekies as die mees geskikte metode
om die…
Advisors/Committee Members: Strauss, Johann M., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering..
Subjects/Keywords: Linear oscillating generator – Design optimisation; Free-piston Stirling engine technology; UCTD
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APA (6th Edition):
Joubert, L. H. (2015). Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/96849
Chicago Manual of Style (16th Edition):
Joubert, Louis Hoogenhout. “Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications.” 2015. Masters Thesis, Stellenbosch University. Accessed October 15, 2019.
http://hdl.handle.net/10019.1/96849.
MLA Handbook (7th Edition):
Joubert, Louis Hoogenhout. “Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications.” 2015. Web. 15 Oct 2019.
Vancouver:
Joubert LH. Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications. [Internet] [Masters thesis]. Stellenbosch University; 2015. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10019.1/96849.
Council of Science Editors:
Joubert LH. Design optimisation of a transverse flux linear oscillating generator for resonant free-piston Stirling applications. [Masters Thesis]. Stellenbosch University; 2015. Available from: http://hdl.handle.net/10019.1/96849
Brno University of Technology
17.
Smékal, Tomáš.
Hnací mechanismus Stirlingova motoru
.
Degree: 2013, Brno University of Technology
URL: http://hdl.handle.net/11012/20120
► Tato práce obsahuje popis základního principu stirlingova motoru, konstrukčních variant a součástí, které zajišťují chod motoru a také popis použití v praxi. Hlavní náplní je…
(more)
▼ Tato práce obsahuje popis základního principu stirlingova motoru, konstrukčních variant a součástí, které zajišťují chod motoru a také popis použití v praxi. Hlavní náplní je konstrukční analýza mechanismu zajišťujícího pohyb obou pístů v beta variantě, která je na nákresu Roberta Stirlinga z r. 1816.; This article contains description of basic principles of
stirling engine, construction types and its parts, which supplies motor run and description of using in real life too. The main topic is analyses of driving mechanism supplying both pistons movement of
stirling engine on Robert Stirling‘s drawing from 1816.
Advisors/Committee Members: Kaplan, Zdeněk (advisor).
Subjects/Keywords: stirlingův motor;
hnací mechanismus;
stirling engine;
crankshaft mechanism
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APA (6th Edition):
Smékal, T. (2013). Hnací mechanismus Stirlingova motoru
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/20120
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Smékal, Tomáš. “Hnací mechanismus Stirlingova motoru
.” 2013. Thesis, Brno University of Technology. Accessed October 15, 2019.
http://hdl.handle.net/11012/20120.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Smékal, Tomáš. “Hnací mechanismus Stirlingova motoru
.” 2013. Web. 15 Oct 2019.
Vancouver:
Smékal T. Hnací mechanismus Stirlingova motoru
. [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/11012/20120.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Smékal T. Hnací mechanismus Stirlingova motoru
. [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/20120
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Toronto
18.
Khan, Umer.
Efficiency and Emissions Study of a Residential Micro-cogeneration System based on a Modified Stirling Engine and Fuelled by a Wood Derived Fas Pyrolysis Liquid-ethanol Blend.
Degree: 2012, University of Toronto
URL: http://hdl.handle.net/1807/33268
► A residential micro-cogeneration system based on a Stirling engine unit was modified to operate with wood derived fast pyrolysis liquid (bio-oil)-ethanol blend. A pilot stabilized…
(more)
▼ A residential micro-cogeneration system based on a Stirling engine unit was modified to operate with wood derived fast pyrolysis liquid (bio-oil)-ethanol blend. A pilot stabilized swirl combustion chamber was designed to replace the original evaporative burner due to bio-oil’s nondistillable nature. This also required modifications of the engine’s control systems. Efficiencies for the bio-oil/ethanol blend were found be higher than those of diesel due to the higher heat loss incurred with diesel. Based on a modified efficiency, which disregarded the heat loss through the combustion chamber, power efficiencies were found to be comparable. The maximum time of operation with the bio-oil/ethanol blend was approximately 97 minutes due to the clogging of the narrow passages. Carbon monoxide emissions were higher for the bio-oil/ethanol blend due to the operation conditions of the combustion chamber. Oxides of nitrogen emissions were also higher for the bio-oil/ethanol blend due to its inherent nitrogen content.
MAST
Advisors/Committee Members: Thomson, Murray J., Mechanical and Industrial Engineering.
Subjects/Keywords: Stirling engine; bio-oil; fast pyrolysis liquid; 0548
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APA (6th Edition):
Khan, U. (2012). Efficiency and Emissions Study of a Residential Micro-cogeneration System based on a Modified Stirling Engine and Fuelled by a Wood Derived Fas Pyrolysis Liquid-ethanol Blend. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/33268
Chicago Manual of Style (16th Edition):
Khan, Umer. “Efficiency and Emissions Study of a Residential Micro-cogeneration System based on a Modified Stirling Engine and Fuelled by a Wood Derived Fas Pyrolysis Liquid-ethanol Blend.” 2012. Masters Thesis, University of Toronto. Accessed October 15, 2019.
http://hdl.handle.net/1807/33268.
MLA Handbook (7th Edition):
Khan, Umer. “Efficiency and Emissions Study of a Residential Micro-cogeneration System based on a Modified Stirling Engine and Fuelled by a Wood Derived Fas Pyrolysis Liquid-ethanol Blend.” 2012. Web. 15 Oct 2019.
Vancouver:
Khan U. Efficiency and Emissions Study of a Residential Micro-cogeneration System based on a Modified Stirling Engine and Fuelled by a Wood Derived Fas Pyrolysis Liquid-ethanol Blend. [Internet] [Masters thesis]. University of Toronto; 2012. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/1807/33268.
Council of Science Editors:
Khan U. Efficiency and Emissions Study of a Residential Micro-cogeneration System based on a Modified Stirling Engine and Fuelled by a Wood Derived Fas Pyrolysis Liquid-ethanol Blend. [Masters Thesis]. University of Toronto; 2012. Available from: http://hdl.handle.net/1807/33268
Arizona State University
19.
Eppard, Erin Frances.
Study of Cross-flow Cooling Effects in a Stirling Engine
Heat Exchanger.
Degree: MS, Mechanical Engineering, 2011, Arizona State University
URL: http://repository.asu.edu/items/14279
► While much effort in Stirling engine development is placed on making the high-temperature region of the Stirling engine warmer, this research explores methods to lower…
(more)
▼ While much effort in Stirling engine development is
placed on making the high-temperature region of the Stirling engine
warmer, this research explores methods to lower the temperature of
the cold region by improving heat transfer in the cooler. This
paper presents heat transfer coefficients obtained for a Stirling
engine heat exchanger with oscillatory flow. The effects of
oscillating frequency and input heat rate on the heat transfer
coefficients are evaluated and details on the design and
development of the heat exchanger test apparatus are also
explained. Featured results include the relationship between
overall heat transfer coefficients and oscillation frequency which
increase from 21.5 to 46.1 Wm-2K-1 as the oscillation frequency
increases from 6.0 to 19.3 Hz. A correlation for the Nusselt number
on the inside of the heat exchange tubes in oscillatory flow is
presented in a concise, dimensionless form in terms of the kinetic
Reynolds number as a result of a statistical analysis. The test
apparatus design is proven to be successful throughout its
implementation due to the usefulness of data and clear trends
observed. The author is not aware of any other publicly-available
research on a Stirling engine cooler to the extent presented in
this paper. Therefore, the present results are analyzed on a
part-by-part basis and compared to segments of other research;
however, strong correlations with data from other studies are not
expected. The data presented in this paper are part of a continuing
effort to better understand heat transfer properties in Stirling
engines as well as other oscillating flow
applications.
Subjects/Keywords: Mechanical engineering; cross-flow; heat exchanger; oscillating; Stirling engine
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APA (6th Edition):
Eppard, E. F. (2011). Study of Cross-flow Cooling Effects in a Stirling Engine
Heat Exchanger. (Masters Thesis). Arizona State University. Retrieved from http://repository.asu.edu/items/14279
Chicago Manual of Style (16th Edition):
Eppard, Erin Frances. “Study of Cross-flow Cooling Effects in a Stirling Engine
Heat Exchanger.” 2011. Masters Thesis, Arizona State University. Accessed October 15, 2019.
http://repository.asu.edu/items/14279.
MLA Handbook (7th Edition):
Eppard, Erin Frances. “Study of Cross-flow Cooling Effects in a Stirling Engine
Heat Exchanger.” 2011. Web. 15 Oct 2019.
Vancouver:
Eppard EF. Study of Cross-flow Cooling Effects in a Stirling Engine
Heat Exchanger. [Internet] [Masters thesis]. Arizona State University; 2011. [cited 2019 Oct 15].
Available from: http://repository.asu.edu/items/14279.
Council of Science Editors:
Eppard EF. Study of Cross-flow Cooling Effects in a Stirling Engine
Heat Exchanger. [Masters Thesis]. Arizona State University; 2011. Available from: http://repository.asu.edu/items/14279
20.
Rodrigues, Nuno Duarte Ribeiro Pires.
Sistema de microgeração de energia com base num motor stirling.
Degree: 2017, Repositório Científico do Instituto Politécnico de Lisboa
URL: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/7391
► Trabalho final de mestrado para obtenção do grau de mestre em Engenharia Mecânica.
As atuais situações energética e ambiental constituem dois dos principais problemas que…
(more)
▼ Trabalho final de mestrado para obtenção do grau de mestre em Engenharia Mecânica.
As atuais situações energética e ambiental constituem dois dos principais problemas que a sociedade enfrenta. A preservação do ambiente e dos recursos naturais requer uma produção de energia sustentável o que, com a tendência crescente do seu consumo, se revela árduo. Como tal, a solução passa não só pelo desenvolvimento das energias renováveis, como pela exploração de novas formas de aproveitamento das mesmas. É neste contexto que se insere o presente trabalho, tendo-se analisado um sistema de microgeração de energia. Este, consiste na adaptação de um sistema de energia solar térmica doméstico para a produção de energia elétrica, através de um motor Stirling que faz o aproveitamento da energia coletada.
Inicialmente foi estudado o potencial energético do sistema, recorrendo-se para isso à simulação computadorizada de um sistema comum de energia solar térmica, para determinação da energia solar coletada pelo mesmo. Posteriormente, foi modelado o motor Stirling através de uma análise adiabática. A comparação de diferentes configurações do motor resultou na seleção da configuração beta, por apresentar um desempenho superior. Seguidamente, diferentes fluidos de trabalho foram considerados, tendo-se optado pelo hidrogénio, uma vez este possibilita uma elevada transferência de calor e em simultâneo perdas de carga reduzidas. O dimensionamento dos permutadores de calor e do regenerador foi realizado mediante as condições impostas pelo sistema de energia solar, tendo-se recorrido a correlações para modelar o escoamento do fluido de trabalho no interior destes componentes. De forma a se maximizar o aproveitamento do motor, foram otimizados os principais parâmetros de funcionamento, como o ângulo de desfasamento, a frequência de rotação e a massa de fluido utilizada. Posteriormente, compararam-se os resultados previstos pela modelação do motor com os obtidos pela sua simulação computacional, de forma a se validarem as metodologias utilizadas no seu dimensionamento. Em último lugar, procedeu-se à simulação do sistema de microgeração completo, tendo-se concluído que, derivado do seu fraco desempenho, o mesmo não é viável.
Today’s energy and environmental situations compose two of the most serious issues society faces. The preservation of the environment and the natural resources requires the sustainable production of energy although, with the rising rate of its consumption, such may not be easy. As a result, the solution lies not only in the development of current renewable energies but also in the discovery of new ways to explore them. It is in the later that this thesis falls into, having being analyzed a microgeneration system which consists in the adaptation of a residential solar thermal system, to produce electricity, by means of a Stirling engine to make use of the collected energy.
Initially, the potential of the system was studied using a computer application to simulate the operation of a regular solar thermal system, in order to…
Advisors/Committee Members: Cardoso, João Antero Nascimento dos Santos, Costa, Jorge Filipe Oliveira de Mendonça e.
Subjects/Keywords: Energia; Sustentabilidade; Microgeração; Energia solar térmica; Motor Stirling; Análise adiabática; Energy; Sustainability; Microgeneration; Solar thermal; Stirling engine; Adiabatic analysis
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APA (6th Edition):
Rodrigues, N. D. R. P. (2017). Sistema de microgeração de energia com base num motor stirling. (Thesis). Repositório Científico do Instituto Politécnico de Lisboa. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/7391
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rodrigues, Nuno Duarte Ribeiro Pires. “Sistema de microgeração de energia com base num motor stirling.” 2017. Thesis, Repositório Científico do Instituto Politécnico de Lisboa. Accessed October 15, 2019.
https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/7391.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rodrigues, Nuno Duarte Ribeiro Pires. “Sistema de microgeração de energia com base num motor stirling.” 2017. Web. 15 Oct 2019.
Vancouver:
Rodrigues NDRP. Sistema de microgeração de energia com base num motor stirling. [Internet] [Thesis]. Repositório Científico do Instituto Politécnico de Lisboa; 2017. [cited 2019 Oct 15].
Available from: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/7391.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rodrigues NDRP. Sistema de microgeração de energia com base num motor stirling. [Thesis]. Repositório Científico do Instituto Politécnico de Lisboa; 2017. Available from: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/7391
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
21.
Vondruš, Jan.
Stirlingův motor
.
Degree: 2016, Brno University of Technology
URL: http://hdl.handle.net/11012/60144
► Bakalářská práce se zabývá popisem a výpočtem tepelného Stirlingova motoru s uzavřeným pracovním oběhem a tepelnou regenerací. V teoretické části je popsána historie motoru, princip…
(more)
▼ Bakalářská práce se zabývá popisem a výpočtem tepelného Stirlingova motoru s uzavřeným pracovním oběhem a tepelnou regenerací. V teoretické části je popsána historie motoru, princip jeho funkce, rozdíly jednotlivých konstrukčních typů motoru a využití motoru v minulosti i současnosti. Dále je zde popsán princip a způsob výpočtu ideálního Stirlingova cyklu a také výhody a nevýhody použití těchto tepelných strojů. Praktická část práce se zabývá výpočtem pomocí ideálního Stirlingova cyklu a výpočtem cyklu jednotlivých modifikací pomocí Schmidtovy idealizace. Primárním cílem této bakalářské práce je porovnání výsledků získaných užitím obou metod. Výsledky práce ukazují, že použití Schmidtovy idealizace dává nižší, a tedy přesnější hodnoty parametrů motoru oproti užití ideálního Stirlingova cyklu.; This bachelor thesis deals with the description and calculation of a closed regenerative thermodynamic cycle. In the theoretical part of the thesis, there is described history of the
engine, the principle of its function, differences between particular design variants, and the use of the
engine in the past and nowadays. In the other part of the work, there is described the principle and calculation of ideal
Stirling cycle. In addition, there are included positives as well as negatives of applying the heat devices based on this cycle. Practical part of the work deals with the calculation of ideal
Stirling cycle with the use of Schmidt theory. The primary aim of this bachelor thesis is then to compare and contrast the results gained from both of the calculation methods. In the end, the results of the thesis show that the use of Schmidt theory gives lower, i.e. more accurate, values of
engine's parameters compared to the use of
Stirling ideal cycle.
Advisors/Committee Members: Kaplan, Zdeněk (advisor).
Subjects/Keywords: Stirlingův cyklus;
Stirlingův motor;
Schmidtova teorie;
regenerace;
termodynamický cyklus;
Stirling cycle;
Stirling engine;
Schmidt theory;
regeneration;
thermodynamic cycle
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APA (6th Edition):
Vondruš, J. (2016). Stirlingův motor
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/60144
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Vondruš, Jan. “Stirlingův motor
.” 2016. Thesis, Brno University of Technology. Accessed October 15, 2019.
http://hdl.handle.net/11012/60144.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Vondruš, Jan. “Stirlingův motor
.” 2016. Web. 15 Oct 2019.
Vancouver:
Vondruš J. Stirlingův motor
. [Internet] [Thesis]. Brno University of Technology; 2016. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/11012/60144.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Vondruš J. Stirlingův motor
. [Thesis]. Brno University of Technology; 2016. Available from: http://hdl.handle.net/11012/60144
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
22.
Kmeť, Jozef.
Stirlingův motor jako součást energetických zdrojů kosmických sond a mimozemských základen
.
Degree: 2013, Brno University of Technology
URL: http://hdl.handle.net/11012/20260
► Táto bakalárska práca sa zaoberá problematikou výroby elektrickej energie potrebnej na prieskumných misiách vo vesmíre. V prvej časti je stručný prehľad spôsobov, ktoré využívajú vesmírne…
(more)
▼ Táto bakalárska práca sa zaoberá problematikou výroby elektrickej energie potrebnej na prieskumných misiách vo vesmíre. V prvej časti je stručný prehľad spôsobov, ktoré využívajú vesmírne agentúry ako NASA. Ďalej sa zaoberá vývojom Stirlingovho motora pre vesmírne aplikácie. Konštrukciou a výhodami, ktoré plynú s jeho použitia. V druhej časti pojednáva o teoretickom výpočte jednotky s výkonom 1 kilowatt.; This Bachelor´s Thesis deals with the production of electricity needed for exploration space missions. The first section is a brief overview of the methods used by space agencies such as NASA. Next, the evolution of progress in
Stirling engine development for space applications. Construction and the benefit of using. The second part discusses the theoretical calculation unit with an output of 1 kilowatt.
Advisors/Committee Members: Škorpík, Jiří (advisor).
Subjects/Keywords: Stirlingov motor;
Stirlingov pokročilý rádioizotopový generátor;
Stirlingov pokročilý konvertor;
Rádioizotopový termoelektrický generátor;
Schmidtová teória;
Stirling engine;
Advanced Stirling Radioizotop Generator;
Advanced Stirling Convertor;
Radioisotop Thermoelectric Generator;
Schmidt teory
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kmeť, J. (2013). Stirlingův motor jako součást energetických zdrojů kosmických sond a mimozemských základen
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/20260
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kmeť, Jozef. “Stirlingův motor jako součást energetických zdrojů kosmických sond a mimozemských základen
.” 2013. Thesis, Brno University of Technology. Accessed October 15, 2019.
http://hdl.handle.net/11012/20260.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kmeť, Jozef. “Stirlingův motor jako součást energetických zdrojů kosmických sond a mimozemských základen
.” 2013. Web. 15 Oct 2019.
Vancouver:
Kmeť J. Stirlingův motor jako součást energetických zdrojů kosmických sond a mimozemských základen
. [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/11012/20260.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kmeť J. Stirlingův motor jako součást energetických zdrojů kosmických sond a mimozemských základen
. [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/20260
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Indian Institute of Science
23.
Bhaskaran, Ramprasad.
Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source.
Degree: 2012, Indian Institute of Science
URL: http://hdl.handle.net/2005/2339
► Stirling engines are promising candidates for applications where air breathing engines cannot be used. Self contained engines capable of operating independently of the environment are…
(more)
▼ Stirling engines are promising candidates for applications where air breathing engines cannot be used. Self contained engines capable of operating independently of the environment are required to convert thermal energy into electric power, or to perform other necessary functions. These are ideally suited for power generation onboard spacecrafts with radioisotope heat source. These engines can power interplanetary missions to Mars and beyond.
The problem of parametric analysis, sensitivity and numerical optimization of
Stirling cycle
engine is discussed and applied to a specific example of a 2kWe free piston
Stirling engine.
Stirling cycle simulation programs are generated with emphasis and adaptations peculiar to free piston design for space use. Design algorithms are generated in MatLab and optimization toolbox is used for the parametric analysis adopted in this thesis.
A free piston beta
Stirling engine with a linear alternator configuration has been studied for the interdependency and performance effects of various important operational parameters. The analysis has been carried out in order to optimize the primary parameters, weight vis a vis envelope (length and diameter) and stroke of the
engine, to make it suitable for space use. The major cycle parameters considered are operating pressure, linear speed, dead space ratio and swept volume ratio, classified as secondary parameters. The whole analysis has been carried out at a cycle temperature ratio of 0.4 for a heat source temperature of 873 K, typical of a radioisotope heat source.
The optimization is carried out for the defined design requirements viz. envelope of 50 × 50 cm , stroke of less than 10 cm, and heat source temperature of 873 K. The process of parametric optimization of the primary parameters viz
engine envelope and stroke are carried out with respect to the secondary parameters. Iterations are carried out on the design programs in MatLab. The results indicate that the three primary parameters have a different set each, of the secondary parameter values when optimized to the design requirement.
The fmincon solver of MatLab in the optimization tool box is selected in order to validate the optimization results. The solver is used to find a minimum of a constrained nonlinear multivariable function defining the primary parameters. The results obtained concur with the optimization results generated by the design algorithm. Further, the interdependency amongst the primary and secondary parameters is studied by generating MatLab plots for all possible combinations among the various parameters.
The effect of variations in the pressure and linear speed on the system envelope and stroke are more pronounced at lower range values of the pressure and speed and the variations of the primary parameter values are constant at higher ranges. The effect of dead space ratio and swept volume ratio (>1.0) is not pronounced.
The requirements in the environment of space place a number of constraints upon a
Stirling engine/alternator design that are not present in…
Advisors/Committee Members: Raghunandan, B N.
Subjects/Keywords: Free-Piston Sterling Engine; Sterling Engine; Spacecraft - Sterling Engine; Space Power Generation; Free-Piston Sterling Engine - Parametric Analysis; Spacecraft - Radioisotope Heat Source; Free Piston Stirling Engine; Heat Engineering
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APA ·
Chicago ·
MLA ·
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CSE |
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APA (6th Edition):
Bhaskaran, R. (2012). Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/2339
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bhaskaran, Ramprasad. “Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source.” 2012. Thesis, Indian Institute of Science. Accessed October 15, 2019.
http://hdl.handle.net/2005/2339.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bhaskaran, Ramprasad. “Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source.” 2012. Web. 15 Oct 2019.
Vancouver:
Bhaskaran R. Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source. [Internet] [Thesis]. Indian Institute of Science; 2012. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/2005/2339.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bhaskaran R. Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source. [Thesis]. Indian Institute of Science; 2012. Available from: http://hdl.handle.net/2005/2339
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Indian Institute of Science
24.
Bhaskaran, Ramprasad.
Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source.
Degree: 2012, Indian Institute of Science
URL: http://etd.iisc.ernet.in/handle/2005/2339
;
http://etd.ncsi.iisc.ernet.in/abstracts/3009/G25328-Abs.pdf
► Stirling engines are promising candidates for applications where air breathing engines cannot be used. Self contained engines capable of operating independently of the environment are…
(more)
▼ Stirling engines are promising candidates for applications where air breathing engines cannot be used. Self contained engines capable of operating independently of the environment are required to convert thermal energy into electric power, or to perform other necessary functions. These are ideally suited for power generation onboard spacecrafts with radioisotope heat source. These engines can power interplanetary missions to Mars and beyond.
The problem of parametric analysis, sensitivity and numerical optimization of
Stirling cycle
engine is discussed and applied to a specific example of a 2kWe free piston
Stirling engine.
Stirling cycle simulation programs are generated with emphasis and adaptations peculiar to free piston design for space use. Design algorithms are generated in MatLab and optimization toolbox is used for the parametric analysis adopted in this thesis.
A free piston beta
Stirling engine with a linear alternator configuration has been studied for the interdependency and performance effects of various important operational parameters. The analysis has been carried out in order to optimize the primary parameters, weight vis a vis envelope (length and diameter) and stroke of the
engine, to make it suitable for space use. The major cycle parameters considered are operating pressure, linear speed, dead space ratio and swept volume ratio, classified as secondary parameters. The whole analysis has been carried out at a cycle temperature ratio of 0.4 for a heat source temperature of 873 K, typical of a radioisotope heat source.
The optimization is carried out for the defined design requirements viz. envelope of 50 × 50 cm , stroke of less than 10 cm, and heat source temperature of 873 K. The process of parametric optimization of the primary parameters viz
engine envelope and stroke are carried out with respect to the secondary parameters. Iterations are carried out on the design programs in MatLab. The results indicate that the three primary parameters have a different set each, of the secondary parameter values when optimized to the design requirement.
The fmincon solver of MatLab in the optimization tool box is selected in order to validate the optimization results. The solver is used to find a minimum of a constrained nonlinear multivariable function defining the primary parameters. The results obtained concur with the optimization results generated by the design algorithm. Further, the interdependency amongst the primary and secondary parameters is studied by generating MatLab plots for all possible combinations among the various parameters.
The effect of variations in the pressure and linear speed on the system envelope and stroke are more pronounced at lower range values of the pressure and speed and the variations of the primary parameter values are constant at higher ranges. The effect of dead space ratio and swept volume ratio (>1.0) is not pronounced.
The requirements in the environment of space place a number of constraints upon a
Stirling engine/alternator design that are not present in…
Advisors/Committee Members: Raghunandan, B N.
Subjects/Keywords: Free-Piston Sterling Engine; Sterling Engine; Spacecraft - Sterling Engine; Space Power Generation; Free-Piston Sterling Engine - Parametric Analysis; Spacecraft - Radioisotope Heat Source; Free Piston Stirling Engine; Heat Engineering
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bhaskaran, R. (2012). Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source. (Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ernet.in/handle/2005/2339 ; http://etd.ncsi.iisc.ernet.in/abstracts/3009/G25328-Abs.pdf
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bhaskaran, Ramprasad. “Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source.” 2012. Thesis, Indian Institute of Science. Accessed October 15, 2019.
http://etd.iisc.ernet.in/handle/2005/2339 ; http://etd.ncsi.iisc.ernet.in/abstracts/3009/G25328-Abs.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bhaskaran, Ramprasad. “Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source.” 2012. Web. 15 Oct 2019.
Vancouver:
Bhaskaran R. Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source. [Internet] [Thesis]. Indian Institute of Science; 2012. [cited 2019 Oct 15].
Available from: http://etd.iisc.ernet.in/handle/2005/2339 ; http://etd.ncsi.iisc.ernet.in/abstracts/3009/G25328-Abs.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bhaskaran R. Parametric Analysis Of A Free Piston Stirling Engine For Spacecraft Power Applications With A Radioisotope Heat Source. [Thesis]. Indian Institute of Science; 2012. Available from: http://etd.iisc.ernet.in/handle/2005/2339 ; http://etd.ncsi.iisc.ernet.in/abstracts/3009/G25328-Abs.pdf
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Case Western Reserve University
25.
Ulusoy, Necati.
Dynamic analysis of free piston Stirling engines.
Degree: PhD, Mechanical Engineering, 1994, Case Western Reserve University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1061217408
► The dynamics of a free piston Stirling engine is investigated through non-linear analysis and numerical simulations. The thermodynamics of the engine is coupled to the…
(more)
▼ The dynamics of a free piston
Stirling engine is
investigated through non-linear analysis and numerical simulations.
The thermodynamics of the
engine is coupled to the dynamics via
either an isothermal or nonisothermal model. The influence of a
nonlinear damper load, the nonlinear pressure loss across the heat
exchangers and the nonlinear spring terms on the dynamics of the
engine are examined. The nonlinear analysis of the isothermal model
shows that both the nonlinear load and the nonlinear loss are
sufficient to ensure a stable periodic motion of the piston and
displacer and the amplitude of the piston and displacer
displacements can be controlled using the coefficient of the
nonlinear load term. While a nonlinear spring in general is capable
of producing a limit cycle solution, the amplitude of the periodic
motion is either too small or too sensitive to changes in the
loading. All these analytical results are verified by numerical
integration. The idea of the nonlinear load is examined further by
coupling the dynamic model to an electrical model for a linear
alternator. Analysis of a reduced order model reveals the existence
of stable periodic solutions and numerical integrations of the full
model are presented to verify the analysis. The amplitude of the
piston and displacer motion can be controlled through the
parameters associated with the electrical load. Finally, the effect
of the temperature variation due to nonisothermal behavior of the
working gas on the
engine dynamics is investigated by numerical
integration of the nonisothermal model. The results of these
integrations show that the variation in the working gas temperature
does not have a significant effect on the dynamics of the
engine,
therefore the isothermal assumption is appropriate for a
qualitative dynamic analysis
Advisors/Committee Members: McCaughan, Frances (Advisor).
Subjects/Keywords: Engineering, Mechanical; Free piston Stirling engine
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APA ·
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CSE |
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Manager
APA (6th Edition):
Ulusoy, N. (1994). Dynamic analysis of free piston Stirling engines. (Doctoral Dissertation). Case Western Reserve University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=case1061217408
Chicago Manual of Style (16th Edition):
Ulusoy, Necati. “Dynamic analysis of free piston Stirling engines.” 1994. Doctoral Dissertation, Case Western Reserve University. Accessed October 15, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=case1061217408.
MLA Handbook (7th Edition):
Ulusoy, Necati. “Dynamic analysis of free piston Stirling engines.” 1994. Web. 15 Oct 2019.
Vancouver:
Ulusoy N. Dynamic analysis of free piston Stirling engines. [Internet] [Doctoral dissertation]. Case Western Reserve University; 1994. [cited 2019 Oct 15].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1061217408.
Council of Science Editors:
Ulusoy N. Dynamic analysis of free piston Stirling engines. [Doctoral Dissertation]. Case Western Reserve University; 1994. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1061217408
Vanderbilt University
26.
Hofacker, Mark Elliot.
Model-Based Design and Experimental Validation of Multi-Domain Dynamic Energy Conversion Devices.
Degree: PhD, Mechanical Engineering, 2013, Vanderbilt University
URL: http://etd.library.vanderbilt.edu//available/etd-12182013-005718/
;
► This dissertation presents the unique design and control of three energy conversion devices. A prototype bridge vibration energy harvester, a free-piston engine compressor, and a…
(more)
▼ This dissertation presents the unique design and control of three energy conversion devices. A prototype bridge vibration energy harvester, a free-piston
engine compressor, and a
Stirling thermocompressor were modeled, designed and constructed. Although these projects differ in many important ways, this dissertation describes how to cast widely different energy conversion devices, such as these, into a common impedance matching framework.
This framework is first used to describe the design and control of a bridge vibration energy harvester meant to power bridge health monitoring electronics. Impedance matching considerations were applied to the mechanical design of a low friction 1-DOF mechanism and to a control law derived using the maximum power transfer theorem. The harvesterâs dynamics were cast as a Thevenin equivalent circuit and an unstable, canonical controller that harvests the maximum power from every frequency was derived by taking the complex conjugate of the circuitâs multi-domain impedance. An implementable, stable controller was found through constrained optimization and is shown in simulation to improve performance over an equivalent, passively controlled device.
The second application of this framework is a free piston
engine compressor intended to serve as an untethered pneumatic power supply for a compact rescue crawler robot. A prototype device is presented that makes improvements over previous iterations including a self-balancing, figure-8 liquid piston configuration, onboard electronics and control, a finite state control scheme, and an improved compressor head. The advantages of the check valveâs dynamics and the figure-8 piston configuration are proven mathematically. These improvements result in a low-vibration, stand-alone device that experimentally demonstrated a 60% increase in pumping pressure over previous iterations.
The third application of this framework is a
Stirling thermocompressor intended to serve as a quiet, untethered, pneumatic power supply for an ankle foot orthosis. The goal of high efficiency at the target power density is pursued through the use of novel heat exchangers in combination with high operating temperature and frequency. The motion of the displacer piston is controlled utilizing a brushless DC motor which drives a continuous linear reciprocating screw. A dynamic model of the heat transfer and pressure dynamics portions of the thermocompressor are developed and experimentally validated.
Although the bridge vibration energy harvester, free piston
engine compressors, and
Stirling thermocompressor are quite dissimilar, this dissertation describes how to cast widely different energy conversion devices into a common impedance matching framework. Each of the devices presented in this document emphasize different aspects of the three major conceptual components: the energetic source, the source impedance and the load impedance. By considering the relevant conceptual components for each device, insights were gained into the fundamental mechanisms needed to transfer…
Advisors/Committee Members: Kenneth Pence (committee member), Eric Barth (chair), Pietro Valdastri (committee member), Michael Goldfarb (committee member), Robert Webster (committee member).
Subjects/Keywords: free piston engine compressor; Stirling thermocompressor; bridge vibration energy harvester; dynamic energy conversion
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Hofacker, M. E. (2013). Model-Based Design and Experimental Validation of Multi-Domain Dynamic Energy Conversion Devices. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://etd.library.vanderbilt.edu//available/etd-12182013-005718/ ;
Chicago Manual of Style (16th Edition):
Hofacker, Mark Elliot. “Model-Based Design and Experimental Validation of Multi-Domain Dynamic Energy Conversion Devices.” 2013. Doctoral Dissertation, Vanderbilt University. Accessed October 15, 2019.
http://etd.library.vanderbilt.edu//available/etd-12182013-005718/ ;.
MLA Handbook (7th Edition):
Hofacker, Mark Elliot. “Model-Based Design and Experimental Validation of Multi-Domain Dynamic Energy Conversion Devices.” 2013. Web. 15 Oct 2019.
Vancouver:
Hofacker ME. Model-Based Design and Experimental Validation of Multi-Domain Dynamic Energy Conversion Devices. [Internet] [Doctoral dissertation]. Vanderbilt University; 2013. [cited 2019 Oct 15].
Available from: http://etd.library.vanderbilt.edu//available/etd-12182013-005718/ ;.
Council of Science Editors:
Hofacker ME. Model-Based Design and Experimental Validation of Multi-Domain Dynamic Energy Conversion Devices. [Doctoral Dissertation]. Vanderbilt University; 2013. Available from: http://etd.library.vanderbilt.edu//available/etd-12182013-005718/ ;
Brno University of Technology
27.
Horák, Jiří.
Výpočtový model tepelného oběhu Stirlingova motoru
.
Degree: 2011, Brno University of Technology
URL: http://hdl.handle.net/11012/3086
► Práce se zabývá tepelným oběhem Stirlingova motoru podle Schmidtovy teorie. V první části práce je stručný přehled a charakteristika metod výpočtu Stirlingova motoru a ukázka…
(more)
▼ Práce se zabývá tepelným oběhem Stirlingova motoru podle Schmidtovy teorie. V první části práce je stručný přehled a charakteristika metod výpočtu Stirlingova motoru a ukázka několika výpočtových modelů. Druhá část se zabývá popisem Schmidtovy idealizace a jejím zpracováním v programovém prostředí. Ve třetí části práce je pomocí výpočtového modelu proveden návrh optimálních parametrů a srovnání výsledků podle teorie s naměřenými hodnotami skutečného motoru.; This Bachelor´s Thesis deals with heat circulation of a
Stirling engine according to the Schmidt theory. In the first part of the thesis there is a short view and characteristic of computational methods for
Stirling engine and there are also a few computational models illustrations. The second part describes the Schmidt idealization and its process within the program environment. The final part of the thesis is focused on the realization of the optimal parameters design using a computational model as well as on the comparison of theoretical results with real measured value.
Advisors/Committee Members: Jedelský, Jan (advisor).
Subjects/Keywords: Stirlingův motor;
Schmidtova teorie;
modifikace;
metody;
optimalizace;
Stirling engine;
Schmidt theory;
modification;
methods;
optimalization
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APA ·
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Export
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APA (6th Edition):
Horák, J. (2011). Výpočtový model tepelného oběhu Stirlingova motoru
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/3086
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Horák, Jiří. “Výpočtový model tepelného oběhu Stirlingova motoru
.” 2011. Thesis, Brno University of Technology. Accessed October 15, 2019.
http://hdl.handle.net/11012/3086.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Horák, Jiří. “Výpočtový model tepelného oběhu Stirlingova motoru
.” 2011. Web. 15 Oct 2019.
Vancouver:
Horák J. Výpočtový model tepelného oběhu Stirlingova motoru
. [Internet] [Thesis]. Brno University of Technology; 2011. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/11012/3086.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Horák J. Výpočtový model tepelného oběhu Stirlingova motoru
. [Thesis]. Brno University of Technology; 2011. Available from: http://hdl.handle.net/11012/3086
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
28.
Flannery, Barry.
Experimental development and modelling of a novel auxiliary power unit for heavy trucks.
Degree: 2017, National University of Ireland – Galway
URL: http://hdl.handle.net/10379/6837
► This thesis identifies the key technical requirements for a heavy truck auxiliary power unit (APU) and explores a potential alternative technology for use in a…
(more)
▼ This thesis identifies the key technical requirements for a heavy truck auxiliary power unit (APU) and explores a potential alternative technology for use in a next-generation APU that could eliminate key problems related to emissions, noise and maintenance experienced today by conventional diesel
engine-vapour compression APUs.
Through evaluation of alternative technologies, the work identified a free-piston
Stirling engine coupled to a zeolite-water adsorption chiller as being an effective technical solution to the range challenges faced by the industry. A prototype test rig of this
Stirling-adsorption system (SAS) was constructed and experimentally characterised to investigated system
integration dynamics and overall performance. The adsorption chiller achieved an average COP of 0.42 ± 0.06 and 2.3 ± 0.1 kWt of cooling capacity at the baseline test condition.
The behaviour of the
Stirling and adsorption subsystems were investigated through semi-empirical reduced order sub-models calibrated by measured experimental test data. These were combined with fundamental physics-based sub-models of other components in the Mathworks SimScape® environment. Using this system-level model, a series of duty cycle test scenarios were simulated, which showed that the SAS has overall average electrical and cooling efficiencies of 8.7% and 27.1%, respectively, compared to values of 4.7% and 11.0% for incumbent technology. The model was also used to explore the impact of thermal coupling between the
engine and chiller. The work proposed a basic control scheme that dynamically prioritizes cooling or electrical demand in order to meet the overall system requirements. Furthermore, the work identified that using the main truck engine’s coolant volume as a thermal buffer tank could significantly reduce the negative impacts on performance of low thermal buffering in the SAS architecture.
The results and experience obtained from the prototype SAS test rig demonstrates that there appear to be no major technology barriers remaining that would prevent adoption of the SAS concept in a next-generation APU. Although there are likely still commercial challenges facing the SAS architecture relating to system capital cost and larger size and weight (albeit still feasible). Nonetheless, such a system could offer reductions in exhaust emissions of greenhouse gases (GHGs), and ozone-depleting substances, while producing less noise and requiring lower maintenance than incumbent technologies. A system payback period is estimated to be 4.6 years.
Advisors/Committee Members: Monaghan, Rory, Irish Research Council, Thermo King, Ingersoll Rand.
Subjects/Keywords: APU; Truck APU; CHP; Stirling engine; Adsorption chiller; Auxiliary power unit; Waste-heat; Mechanical engineering
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APA ·
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MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Flannery, B. (2017). Experimental development and modelling of a novel auxiliary power unit for heavy trucks. (Thesis). National University of Ireland – Galway. Retrieved from http://hdl.handle.net/10379/6837
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Flannery, Barry. “Experimental development and modelling of a novel auxiliary power unit for heavy trucks.” 2017. Thesis, National University of Ireland – Galway. Accessed October 15, 2019.
http://hdl.handle.net/10379/6837.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Flannery, Barry. “Experimental development and modelling of a novel auxiliary power unit for heavy trucks.” 2017. Web. 15 Oct 2019.
Vancouver:
Flannery B. Experimental development and modelling of a novel auxiliary power unit for heavy trucks. [Internet] [Thesis]. National University of Ireland – Galway; 2017. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10379/6837.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Flannery B. Experimental development and modelling of a novel auxiliary power unit for heavy trucks. [Thesis]. National University of Ireland – Galway; 2017. Available from: http://hdl.handle.net/10379/6837
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Canterbury
29.
Hoegel, Benedikt.
Thermodynamics-based design of stirling engines for low-temperature heat sources.
Degree: Mechanical Engineering, 2014, University of Canterbury
URL: http://hdl.handle.net/10092/9344
► Large amounts of energy from heat sources such as waste-eat and geothermal energy are available worldwide but their potential for useful power-generation is largely untapped.…
(more)
▼ Large amounts of energy from heat sources such as waste-eat and geothermal energy are available worldwide but their potential for useful power-generation is largely untapped. This is because they are relatively low temperature difference (LTD) sources, in the range from 100 to 200 °C, and it is thermodynamically diffcult, for theoretical and practical reasons, to extract useful work at these temperatures. This work explores the suitability of a Stirling engine (SE) to exploit these heat sources. Elsewhere much work has been done to optimise Stirling engines for high temperature heat sources, but little is known about suitable engine layouts, and their optimal design and operational aspects at lower temperature differences. With the reduced temperature difference, changes from conventional engine designs become necessary and robust solutions for this novel application have to be identified.
This has been achieved in four major steps: identification of a suitable engine type; thermodynamic optimisation of operating and engine parameters; optimisation of mechanical efficiency; and the development of conceptual designs for the engine and its components informed by the preceding analysis. For the optimisation of engine and operating parameters a model was set up in the commercial Stirling software package, Sage, which also has been validated in this thesis; suitable parameter combinations have been identified.
This work makes key contributions in several areas. This first is the identification of methods for better simulating the thermodynamic behaviour of these engines. At low temperature differences the performance of Stirling engines is very sensitive to losses by fluid friction (and thus frequency), adiabatic temperature rise during compression, and the heat transfer from and to the surroundings. Consequently the usual isothermal analytical approaches produce results that can be misleading. It is necessary to use a non-isothermal approach, and the work shows how this may be achieved.
A second contribution is the identification of the important design variables and their causal effects on system performance. The primary design variable is engine layout. For an engine having inherently low efficiency due to the low temperature difference it is important to choose the engine layout that provides the highest power density possible in order to minimise engine size and to save costs. From this analysis the double-acting alpha-type configuration has been identified as being the most suitable, as opposed to the beta or gamma configurations. An-other key design variable is working fluid, and the results identify helium and hydrogen as suitable, and air and nitrogen as unsuitable. Frequency and phase angle are other design variables, and the work identifies favourable values. A sensitivity analysis identifies the phase angle, regenerator porosity, and temperature levels as the most sensitive parameters for power and efficiency. It has also been shown that the compression work in low-temperature difference Stirling engines…
Subjects/Keywords: Stirling engine; geothermal energy; waste-heat; low-temperature power generation; third-order modelling; alpha engines; mechanical efficiency; engine design
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APA (6th Edition):
Hoegel, B. (2014). Thermodynamics-based design of stirling engines for low-temperature heat sources. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/9344
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hoegel, Benedikt. “Thermodynamics-based design of stirling engines for low-temperature heat sources.” 2014. Thesis, University of Canterbury. Accessed October 15, 2019.
http://hdl.handle.net/10092/9344.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hoegel, Benedikt. “Thermodynamics-based design of stirling engines for low-temperature heat sources.” 2014. Web. 15 Oct 2019.
Vancouver:
Hoegel B. Thermodynamics-based design of stirling engines for low-temperature heat sources. [Internet] [Thesis]. University of Canterbury; 2014. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/10092/9344.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hoegel B. Thermodynamics-based design of stirling engines for low-temperature heat sources. [Thesis]. University of Canterbury; 2014. Available from: http://hdl.handle.net/10092/9344
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
30.
Dentello, Rodrigo Orefise [UNESP].
Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar.
Degree: 2017, Universidade Estadual Paulista
URL: http://hdl.handle.net/11449/151835
► O motor Stirling é um motor de combustão externa que opera com diferenças de temperaturas, produzindo trabalho mecânico e eletricidade. Esse tipo de motor opera…
(more)
▼ O motor Stirling é um motor de combustão externa que opera com diferenças de temperaturas, produzindo trabalho mecânico e eletricidade. Esse tipo de motor opera em um ciclo fechado, que através do uso de uma fonte quente e uma fria, expande e comprime um fluido de trabalho (ar, hélio ou hidrogênio, dentre os mais comuns), fornecendo assim o movimento de um pistão. Pode operar com calor residual e também com a queima de qualquer tipo de combustível (gás natural, diesel, gasolina, etc). Essa tecnologia tem se destacado para o desenvolvimento de sistemas que operam com biocombustíveis (biogás e syngas) e com energias renováveis, como por exemplo, caso de uso de concentradores solares. Este trabalho tem como objetivo estudar as performances termodinâmica, econômica e ambiental de um sistema Stirling operando com sistema de alimentação a biogás e energia solar, aplicado para a geração de energia elétrica descentralizada. São realizados estudos dos aspectos termodinâmicos do ciclo Stirling, com foco no funcionamento e no trabalho do motor. São efetuadas análises técnicas do sistema operando com câmara de combustão a biogás e utilizando energia de concentrador solar parabólico. Em etapa final são analisados e comparados os aspectos econômicos e ambientais do sistema acionado por biogás e energia solar. Os resultados obtidos mostraram pela teoria de Schmidt uma eficiência do motor Stirling de 67%. Da análise econômica, fica evidente que um maior número de horas de operação corrobora com a viabilidade econômica. Quantos aos aspectos ambientais, o valor da eficiência ecológica do motor Stirling operando a biogás é de 98,02%. No caso do sistema solar utilizando concentrador para alimentar o motor Stirling, a eficiência ecológica indica é de cerca de 98%. Conclui-se que o uso de fontes renováveis, permitem bons níveis de eficiência de geração de energia elétrica de sistemas utilizando motores Stirling de pequeno porte, reduzindo níveis de poluição atmosférica e contribuindo para a redução do efeito estufa.
The Stirling engine is an external combustion engine that operates at varying temperatures, producing mechanical work or electricity. This type of engine operates in a closed cycle, which through the use of a hot and cold source expands and compresses a working fluid (air, helium or hydrogen, among the most common), thus providing the movement of a piston. It can operate with residual heat and also with the burning of any type of fuel (natural gas, diesel, gasoline, etc.). This technology has been outstanding for the development of hybrid systems that operate with biofuels (biogas and syngas) and with renewable energies, as for example, case of use of solar concentrators. This work aims to study the thermodynamic, economic and environmental performances of a Stirling system operating with a biogas and solar energy supply system, applied for the generation of decentralized electric energy. Studies are carried out on the thermodynamic aspects of the Stirling cycle, focusing on the operation and work of the engine. Technical…
Advisors/Committee Members: Silveira, Jose Luz [UNESP], Canettieri, Eliana Vieira [UNESP], Forti, Antonio Wagner [UNESP], Universidade Estadual Paulista (UNESP).
Subjects/Keywords: Motor Stirling; Biogás; Energia solar; Análise energética; Análise econômica; Análise ambiental; Stirling engine; Biogas; Solar energy; Energy analysis; Economic analysis and environmental analysis
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dentello, R. O. [. (2017). Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar. (Thesis). Universidade Estadual Paulista. Retrieved from http://hdl.handle.net/11449/151835
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dentello, Rodrigo Orefise [UNESP]. “Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar.” 2017. Thesis, Universidade Estadual Paulista. Accessed October 15, 2019.
http://hdl.handle.net/11449/151835.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dentello, Rodrigo Orefise [UNESP]. “Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar.” 2017. Web. 15 Oct 2019.
Vancouver:
Dentello RO[. Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar. [Internet] [Thesis]. Universidade Estadual Paulista; 2017. [cited 2019 Oct 15].
Available from: http://hdl.handle.net/11449/151835.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dentello RO[. Estudo de geração de energia elétrica em motores stirling acionados por biogás e/ou energia solar. [Thesis]. Universidade Estadual Paulista; 2017. Available from: http://hdl.handle.net/11449/151835
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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