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Cranfield University
1.
Tipnis, T J.
Effects of upstream nozzle geometry on rectangular free jets.
Degree: PhD, Depatment of Engineering Systems and Mangement, 2010, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/4557 
► This study is aimed at understanding the effects of changing the upstream nozzle geometry on the development of rectangular free jets. An existing converging rectangular…
(more)
▼ This study is aimed at understanding the effects of changing the upstream nozzle geometry on the development of rectangular free jets. An existing converging rectangular nozzle with an exit aspect ratio of 4 and a circular inlet (AR4 nozzle) has been used as the basic configuration for this work. The study is primarily based on the results of numerical simulations wherein the internal geometry variation is accomplished by changing the inlet aspect ratio (AR,) and the length of the converging section, expressed as a ratio with respect to the length of the nozzle (called 'converging section ratio*, CSR); all the other parameters are kept constant. The results from LDA experiments done on the AR4 nozzle are presented and used as validation data for the CPD simulations. Analyses of the numerical results help in understanding the variation of the jet spreading for different combinations of AR, and CSR. Two parameters are identified for describing the jet development: the cross-over point (XC), defined as the location downstream of the exit where the jet half-velocity-widths (B) along the major and minor axes are equal, and the difference in the half-velocity-widths at 30 nozzle equivalent diameters (Dm) from the exit (AB30), to ascertain the occurrence of axis-switching. For a given AR,, XC varies linearly with CSR; the variation of XC is non-linear with AR, for a constant CSR. The A1330 variation is non-linear with both AR, and CSR; the other variable being kept constant. The data obtained from the simulations are further used to propose two parametric models which can be used to predict the occurrence of axis-switching, within the scope of this work. The parametric models are validated and future work is proposed.
Subjects/Keywords: Jet Engines
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APA (6th Edition):
Tipnis, T. J. (2010). Effects of upstream nozzle geometry on rectangular free jets. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/4557
Chicago Manual of Style (16th Edition):
Tipnis, T J. “Effects of upstream nozzle geometry on rectangular free jets.” 2010. Doctoral Dissertation, Cranfield University. Accessed April 14, 2021.
http://dspace.lib.cranfield.ac.uk/handle/1826/4557.
MLA Handbook (7th Edition):
Tipnis, T J. “Effects of upstream nozzle geometry on rectangular free jets.” 2010. Web. 14 Apr 2021.
Vancouver:
Tipnis TJ. Effects of upstream nozzle geometry on rectangular free jets. [Internet] [Doctoral dissertation]. Cranfield University; 2010. [cited 2021 Apr 14].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/4557.
Council of Science Editors:
Tipnis TJ. Effects of upstream nozzle geometry on rectangular free jets. [Doctoral Dissertation]. Cranfield University; 2010. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/4557
2.
Lin, Weiyang.
Computational investigation of the effects of casing treatments on the performance of a turbofan.
Degree: 2013, University of Tennessee – Chattanooga
URL: https://scholar.utc.edu/theses/324
► A computational survey focused on modifications to the casing near the rotor blade tip is carried out for the purpose of enhancing the performance and…
(more)
▼ A computational survey focused on modifications to the casing
near the
rotor blade tip is carried out for the purpose of enhancing the performance and
increasing the stall margin of a model turbofan stage in transonic operating
conditions. The study is divided into three phases. During the first phase two types
of casing treatments, inward protruding rings and circumferential grooves, were
tested with relatively coarse grids. In the second phase, a grid resolution study is
carried out with the results from this phase influencing the choices for the third
stage. In the
third phase, a comprehensive study is performed to examine the near-stall effects and stall-related behavior of the baseline case and a series of
circumferential groove configurations.
Advisors/Committee Members: Sreenivas, Kidambi, Webster, Robert S., Hyams, Daniel G., Briley, W. Roger, McFarland, Eric R., College of Engineering and Computer Science.
Subjects/Keywords: Turbofan engines
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APA (6th Edition):
Lin, W. (2013). Computational investigation of the effects of casing treatments on the performance of a turbofan. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/324
Chicago Manual of Style (16th Edition):
Lin, Weiyang. “Computational investigation of the effects of casing treatments on the performance of a turbofan.” 2013. Masters Thesis, University of Tennessee – Chattanooga. Accessed April 14, 2021.
https://scholar.utc.edu/theses/324.
MLA Handbook (7th Edition):
Lin, Weiyang. “Computational investigation of the effects of casing treatments on the performance of a turbofan.” 2013. Web. 14 Apr 2021.
Vancouver:
Lin W. Computational investigation of the effects of casing treatments on the performance of a turbofan. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2013. [cited 2021 Apr 14].
Available from: https://scholar.utc.edu/theses/324.
Council of Science Editors:
Lin W. Computational investigation of the effects of casing treatments on the performance of a turbofan. [Masters Thesis]. University of Tennessee – Chattanooga; 2013. Available from: https://scholar.utc.edu/theses/324
University of Tasmania
3.
Kim, YS.
An evaluation study of web monitoring : web monitoring vs. web crawling.
Degree: 2009, University of Tasmania
URL: https://eprints.utas.edu.au/20802/1/whole_KimYangsok2009_thesis.pdf
► Nowadays people use web search engines to find information. Even though these engines endeavour to provide information in a complete and timely manner, there are…
(more)
▼ Nowadays people use web search engines to find information. Even though these engines endeavour to provide information in a complete and timely manner, there are significant delays and under-coverage in their services. However, people sometimes want to obtain new information from personally selected web pages without missing anything and with little delay. Web monitoring tries to fulfil this goal by revisiting the selected web pages frequently. Initially, web monitoring focused on the monitoring method, but then the research emphasis changed in order to address the problem of information overload and scheduling under limited resources.
This dissertation focuses on the following research problems to improve the efficiency of web monitoring systems. Firstly, it analyses how efficiently a document classification system that uses an incremental knowledge acquisition method, called MCRDR (Multiple Classification Ripple-Down Rules), was used to resolve individual information overload problems. Secondly, it discusses how MCRDR knowledge bases, standard web search engines, and appropriate· web page locating heuristics can be employed in unison to locate relevant monitoring web pages. Thirdly, it demonstrates that the web monitoring system exhibits better performance in respect of service coverage and delay than commercial web search engines. Lastly, it proposes a monitoring web page prioritization method that decides the orders of monitoring sequence using the estimated service coverage and delay of web search engines obtained by using various predictor variables identified from the web crawling policies and statistical regression methods.
Subjects/Keywords: Web search engines; Internet searching; Search engines
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APA (6th Edition):
Kim, Y. (2009). An evaluation study of web monitoring : web monitoring vs. web crawling. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/20802/1/whole_KimYangsok2009_thesis.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):
Kim, YS. “An evaluation study of web monitoring : web monitoring vs. web crawling.” 2009. Thesis, University of Tasmania. Accessed April 14, 2021.
https://eprints.utas.edu.au/20802/1/whole_KimYangsok2009_thesis.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kim, YS. “An evaluation study of web monitoring : web monitoring vs. web crawling.” 2009. Web. 14 Apr 2021.
Vancouver:
Kim Y. An evaluation study of web monitoring : web monitoring vs. web crawling. [Internet] [Thesis]. University of Tasmania; 2009. [cited 2021 Apr 14].
Available from: https://eprints.utas.edu.au/20802/1/whole_KimYangsok2009_thesis.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kim Y. An evaluation study of web monitoring : web monitoring vs. web crawling. [Thesis]. University of Tasmania; 2009. Available from: https://eprints.utas.edu.au/20802/1/whole_KimYangsok2009_thesis.pdf
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Nottingham
4.
Di Liberto, Gianluca.
Mechanisms of soot transfer to oil of an HPCR diesel engine.
Degree: PhD, 2017, University of Nottingham
URL: http://eprints.nottingham.ac.uk/42331/
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609
► High levels of soot-in-oil can cause an increase in engine wear and oil viscosity, thus reducing oil drain intervals. The mechanisms by which soot particles…
(more)
▼ High levels of soot-in-oil can cause an increase in engine wear and oil viscosity, thus reducing oil drain intervals. The mechanisms by which soot particles are entrained into the bulk oil are not well understood. The research reported in this thesis addresses questions on the mechanisms of soot transfer to the lubricating oil in light-duty diesel engines with high pressure EGR systems. Deposition as a result of blow-by gas passing the piston ring pack and by absorption to the oil film on the cylinder liner via thermophoresis are soot transfer mechanisms that have been considered in detail. The investigations are based on analytical and simulation studies, and results based on complementary experimental studies are used to validate these. The experimental investigations aimed at evaluating the typical rate of accumulation and size distribution of soot agglomerates in oil. The oil samples analysed were collected during regular services from light-duty diesel engine vehicles. These were representative of vehicles meeting Euro IV and V emission regulation standards driven under real-world conditions. The rate of soot-in-oil was determined by thermogravimetric analysis and results showed a concentration of approximately 1 wt% of soot-in-oil after 15,000 km. The particle size distribution was determined using a novel technique, Nanoparticle Tracking Analysis (NTA), applied for the first time to soot-laden oil samples by the author [1, 2]. Results showed an average particle size distribution of 150 nm, irrespective of oil drain interval. Almost the totality of the particles were between 70 and 400 nm, with micro particles not detected in any of the samples analysed. For the samples investigated in this work, the Euro standard did not influence either the rate of soot deposition or the particles size distribution. To the author’s best knowledge, this is the first time that rate of soot deposition and particles size distribution from oil samples collected from vehicles of different Euro standard driven under real-world conditions are analysed and compared. Exhaust Gas Recirculation (EGR) is a common technique used in diesel engines in order to reduce NO¬x emissions. However, it has the drawback that it increases the production of soot. In this work, particular attention has been given to its effects on the rate of soot deposition in oil. Both its influence on the soot produced during the combustion process and on the soot re-introduced in the combustion chamber by the EGR gas has been investigated through CFD simulations using Kiva-3V. Examining the relative importance of near–surface transport of soot by thermophoresis to the oil film on the liner and from blow-by gases to surfaces in the ring pack shows the former to be the dominant mechanism of soot transfer. EGR increases the rate of deposition of soot on the liner not only by increasing net production of soot, but also through the re-cycled particles. At EGR levels higher than 20%, the contribution of the Re-cycled soot becomes the major source for soot-in-oil. The…
Subjects/Keywords: 621.43; TJ751 Internal combustion engines. Diesel engines
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APA (6th Edition):
Di Liberto, G. (2017). Mechanisms of soot transfer to oil of an HPCR diesel engine. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609
Chicago Manual of Style (16th Edition):
Di Liberto, Gianluca. “Mechanisms of soot transfer to oil of an HPCR diesel engine.” 2017. Doctoral Dissertation, University of Nottingham. Accessed April 14, 2021.
http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609.
MLA Handbook (7th Edition):
Di Liberto, Gianluca. “Mechanisms of soot transfer to oil of an HPCR diesel engine.” 2017. Web. 14 Apr 2021.
Vancouver:
Di Liberto G. Mechanisms of soot transfer to oil of an HPCR diesel engine. [Internet] [Doctoral dissertation]. University of Nottingham; 2017. [cited 2021 Apr 14].
Available from: http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609.
Council of Science Editors:
Di Liberto G. Mechanisms of soot transfer to oil of an HPCR diesel engine. [Doctoral Dissertation]. University of Nottingham; 2017. Available from: http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609
University of Nottingham
5.
Wan Mahmood, Wan Mohd Faizal.
Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine.
Degree: PhD, 2011, University of Nottingham
URL: http://eprints.nottingham.ac.uk/12064/
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430
► The investigation reported in this thesis is concerned with the topic of soot formation and soot particle motion in the cylinder of a light duty…
(more)
▼ The investigation reported in this thesis is concerned with the topic of soot formation and soot particle motion in the cylinder of a light duty automotive diesel engine. CFD has been employed to simulate in-cylinder conditions and to investigate the source of particles which are transferred to the oil. The accumulation of soot in the lubricating oil of diesel engines is one of the factors limiting the interval between oil changes and hence service interval. Soot particles can be transferred to oil film on the cylinder wall layers through the complex motion of the fluid flow in the cylinder. The paths of soot particles from specific in-cylinder locations and crank angle instants have been explored using the results for cylinder charge motion predicted by the Kiva-3v CFD code. Using the velocity fields from the simulation data, massless tracking of the in-cylinder soot particles in space and time is carried out employing a particle tracking with trilinear interpolation technique. From this investigation, new computational codes for the prediction of soot particle paths and soot particle size change along a specific path in a diesel engine have been developed. This investigation is the first numerical study into soot particle trajectories within an engine and thus opens up a novel branch of research of soot formation within internal combustion engines. Computed soot paths from the investigation show that soot particles formed just below the fuel spray axis inside the middle bowl area during early injection period are more likely sources of soot particles on the cylinder wall layers than those formed later. Soot particles that are formed above the fuel axis have less tendency to be transported to the cylinder wall layers thus are not likely to be the main source of soot at the cylinder walls. Soot particles that are from the bowl rim area are found to be another source of soot transfer to the boundary layer, as they are directly exposed to reverse squish motion during the expansion stroke. Soot particles that are formed near the cylinder jet axis during fuel injection tend to move into the bowl. These soot particles are found to be from the relatively less concentrated area. In contrast, particles from the most concentrated areas tend to be moving into the bowl and pose least risk of contaminating oil films on the liner. Sensitivity studies of soot particle paths to swirl show that engine operating with low swirl ratios are more vulnerable to soot in oil problem as low swirls cause the bulk fluid flow to be moving closer to the cylinder walls due to fuel jet velocity and reverse squish motions. Decreasing the spray angle lessens the possibilities of soot particles from being transported close the cylinder wall layers while increasing the spray angle increases the possibilities of soot from the bowl region to be transported close to the cylinder wall layers. The temporal and spatial evolution of soot particle size can be predicted by using the history of temperature, pressure and gas species along the paths. An…
Subjects/Keywords: 621.43; TJ751 Internal combustion engines. Diesel engines
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APA (6th Edition):
Wan Mahmood, W. M. F. (2011). Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430
Chicago Manual of Style (16th Edition):
Wan Mahmood, Wan Mohd Faizal. “Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine.” 2011. Doctoral Dissertation, University of Nottingham. Accessed April 14, 2021.
http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430.
MLA Handbook (7th Edition):
Wan Mahmood, Wan Mohd Faizal. “Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine.” 2011. Web. 14 Apr 2021.
Vancouver:
Wan Mahmood WMF. Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine. [Internet] [Doctoral dissertation]. University of Nottingham; 2011. [cited 2021 Apr 14].
Available from: http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430.
Council of Science Editors:
Wan Mahmood WMF. Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine. [Doctoral Dissertation]. University of Nottingham; 2011. Available from: http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430
University of Nottingham
6.
McGhee, Michael James.
Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions.
Degree: PhD, 2013, University of Nottingham
URL: http://eprints.nottingham.ac.uk/13179/
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219
► An experimental investigation of post-start cold idling behaviour has been carried out on a modern single-cylinder HPCR DI light duty diesel engine with a low…
(more)
▼ An experimental investigation of post-start cold idling behaviour has been carried out on a modern single-cylinder HPCR DI light duty diesel engine with a low compression ratio of 15.5:1 at temperatures between 10 and -20°C. The trend toward lower compression ratios from more common values of around 22:1 a few years ago has resulted in lower compression pressures and temperatures, which negatively affects cold idle operation. Improvements in cycle-by-cycle stability of indicated work output through fuel injection strategy and glow plug temperature changes have been explored. This is important to improve NVH and the consumer’s perception of vehicle quality. The key effects on heat release characteristics have been identified and the associated impact on stability discussed. High speed imaging of ignition in a combustion bomb has been used to aid interpretation of engine results. Up to four pilot injections placed in advance of the main have been used. Shorter separation between pilots and pilot-to-main improves stability independent of the number of pilot injections and extends the range of main injection timings to meet target stability of 10% or lower at -20°C. Increasing the number of pilot injections was effective in stabilising combustion at all investigated soak temperatures at fuelling levels producing indicated work required to match friction and ancillary demands. Stability can be susceptible to deterioration at moderate soak temperatures because fuelling demand is relatively low. If a high number of pilot injections are to be avoided to reduce potential wear, then increasing main injection quantity is an effective method to stabilise combustion for a lower pilot number strategy but any increase above target load has to be harnessed by additional ancillary devices. Very high glow plug temperatures of up to 1200°C were examined using a smaller diameter tip ceramic type design. Stable combustion cannot be achieved through higher glow plug temperatures alone. A temperature of 1000°C, which can be achieved using a low voltage metallic type, is adequate to stabilise combustion when combined with a triple-pilot strategy at sub-zero temperatures. The best stability is achieved using 1200°C, which can only be achieved using a more expensive ceramic type, in combination with a triple-pilot strategy producing the desirable target of ~5% or below; the effects are not mutually exclusive. At high glow plug temperatures and using three or four pilot injections, stability improved with warmer soak temperatures. At -5°C, stability was relatively poor when one or two pilots were used irrespective of glow plug temperature. A high premixed contribution to main combustion is associated with improved stability. Minimum threshold values are necessary to stabilise combustion: ~25 J/° at -20°C, ~20 J/° at -5°C and only ~10 J/° at 10°C. A higher number of pilot injections raises pilot induced combustion and improves mixture distribution. These effects subsequently increase the premixed combustion and help sustain a strong main…
Subjects/Keywords: 621.436; TJ751 Internal combustion engines. Diesel engines
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APA (6th Edition):
McGhee, M. J. (2013). Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219
Chicago Manual of Style (16th Edition):
McGhee, Michael James. “Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions.” 2013. Doctoral Dissertation, University of Nottingham. Accessed April 14, 2021.
http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219.
MLA Handbook (7th Edition):
McGhee, Michael James. “Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions.” 2013. Web. 14 Apr 2021.
Vancouver:
McGhee MJ. Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions. [Internet] [Doctoral dissertation]. University of Nottingham; 2013. [cited 2021 Apr 14].
Available from: http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219.
Council of Science Editors:
McGhee MJ. Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions. [Doctoral Dissertation]. University of Nottingham; 2013. Available from: http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219
University of Nottingham
7.
Chandran, Davannendran.
Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system.
Degree: PhD, 2017, University of Nottingham
URL: http://eprints.nottingham.ac.uk/35228/
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366
► Compatibility of fuel delivery materials (FDM) with biodiesel fuel in the fuel delivery system (FDS) under real-life common rail diesel engine (CRDE) operation poses a…
(more)
▼ Compatibility of fuel delivery materials (FDM) with biodiesel fuel in the fuel delivery system (FDS) under real-life common rail diesel engine (CRDE) operation poses a challenge to researchers and engine manufacturers alike. Although standard methods such as ASTM G31 and ASTM D471 for metals and elastomers, respectively, are deemed suitable for evaluating the effects of water content, total acid number (TAN) and oxidation products in biodiesel on FDM degradation, they do not resemble the actual engine operation conditions such as varying fuel pressure/temperature as well as the presence of a wide range of materials in the FDS of a diesel engine. Hence, the current allowable maximum 20 vol% of biodiesel with 80 vol% of diesel (B20) for use in diesel engines to date is debatable. Additionally, biodiesel utilization beyond B20 is essential to combat declining air quality and to reduce the dependence on fuel imports. This thesis aims to elucidate the actual compatibility present between FDM and biodiesel in the FDS under real-life CRDE operation. This was achieved through multi-faceted experimentations which commenced with analyses on the deteriorated palm biodiesel samples collected during and after CRDE operation. Next, the fuel properties which should be emphasized based on the deteriorated fuel were determined. This was then followed by ascertaining the effects of the emphasized fuel properties towards FDM degradation. Ultimately, the actual compatibility of FDM with biodiesel under engine operation through modified immersion investigations was determined. FDM degradation acceleration factors such as oxidized biodiesel, TAN and water content were eliminated since these factors were not affected based on the analysed fuel samples collected after engine operation. No oxidation products such as aldehydes, ketones and carboxylic acids were detected while the TAN and water content were within 0.446% and 0.625% of their initial values, respectively. Instead, the biodiesel’s dissolved oxygen (DO) concentration and conductivity value were not only found to have changed during and after engine operation by -93% and 293%, respectively, but were also found to have influenced biodiesel deterioration under engine operation. These two properties were subsequently discovered to have adversely affected FDM degradation independently. The copper corrosion rate and nitrile rubber (NBR) volume change increased by 9% and 13%, respectively, due to 22% increase in the conductivity value. In contrast, the copper corrosion rate and NBR volume swelling reduced by 91% and 27%, respectively, due to 96% reduction in the DO concentration. Ultimately, copper corrosion and NBR degradation were determined to be lowered by up to 92% and 73%, respectively, under modified immersion as compared to typical immersion condition. These outcomes distinctly show that acceptable to good compatibility is present between FDM and biodiesel under CRDE operation. The good compatibility is strongly supported since only a maximum lifespan reduction of 1.5 years is…
Subjects/Keywords: 621.43; TJ751 Internal combustion engines. Diesel engines
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APA (6th Edition):
Chandran, D. (2017). Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366
Chicago Manual of Style (16th Edition):
Chandran, Davannendran. “Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system.” 2017. Doctoral Dissertation, University of Nottingham. Accessed April 14, 2021.
http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366.
MLA Handbook (7th Edition):
Chandran, Davannendran. “Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system.” 2017. Web. 14 Apr 2021.
Vancouver:
Chandran D. Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system. [Internet] [Doctoral dissertation]. University of Nottingham; 2017. [cited 2021 Apr 14].
Available from: http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366.
Council of Science Editors:
Chandran D. Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system. [Doctoral Dissertation]. University of Nottingham; 2017. Available from: http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366
University of Miami
8.
Chen, Shanghua.
An Investigation of The New High Efficiency 3 Cylinders Internal Combustion Engine.
Degree: MS, Mechanical Engineering (Engineering), 2016, University of Miami
URL: https://scholarlyrepository.miami.edu/oa_theses/601
► The thesis is an initial study of a unique 3 cylinder geometry for naturally aspired piston type internal combustion engines (ICE). The advantages of…
(more)
▼ The thesis is an initial study of a unique 3 cylinder geometry for naturally aspired piston type internal combustion
engines (ICE). The advantages of the configuration are the production of a very compact but not necessarily light engine, thermal efficiency improvements of 15% to 20%, and the ability to operate on low octane fuels without the reduction in expansion ratio that accompanies all other ICE when their compression ratios are reduced. An increase in efficiency produces an equivalent reduction in carbon dioxide production as the fuel normally needed to produce the power produced by the improvement in efficiency is never burned. Regulated emissions of unburnt hydrocarbons, oxides of nitrogen and carbon monoxide ( ) would be controlled as they are in conventional ICEs.
Advisors/Committee Members: Michael R. Swain, Matthew N. Swain, Ryan Lee Karkkainen.
Subjects/Keywords: internal combustion engines
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APA (6th Edition):
Chen, S. (2016). An Investigation of The New High Efficiency 3 Cylinders Internal Combustion Engine. (Thesis). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_theses/601
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):
Chen, Shanghua. “An Investigation of The New High Efficiency 3 Cylinders Internal Combustion Engine.” 2016. Thesis, University of Miami. Accessed April 14, 2021.
https://scholarlyrepository.miami.edu/oa_theses/601.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Shanghua. “An Investigation of The New High Efficiency 3 Cylinders Internal Combustion Engine.” 2016. Web. 14 Apr 2021.
Vancouver:
Chen S. An Investigation of The New High Efficiency 3 Cylinders Internal Combustion Engine. [Internet] [Thesis]. University of Miami; 2016. [cited 2021 Apr 14].
Available from: https://scholarlyrepository.miami.edu/oa_theses/601.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen S. An Investigation of The New High Efficiency 3 Cylinders Internal Combustion Engine. [Thesis]. University of Miami; 2016. Available from: https://scholarlyrepository.miami.edu/oa_theses/601
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Victoria
9.
Pitt, Philip Lawrence.
The early phase of spark ignition.
Degree: Department of Physics and Astronomy, 2018, University of Victoria
URL: https://dspace.library.uvic.ca//handle/1828/9664
► In this dissertation, some practical ignition techniques are presented that show how some problems of lean-burn combustion can be overcome. Then, to shed light on…
(more)
▼ In this dissertation, some practical ignition techniques are presented that show how some problems of lean-burn combustion can be overcome. Then, to shed light on the effects of the ignition techniques described, the focus shifts to the more specific problem of the early phase of spark ignition. Thermal models of ignition are reviewed. These models treat the energy provided by the electrical discharge as a point source, delivered infinitely fast and creating a spherically symmetric ignition kernel. The thesis challenges the basis of these thermal models by reviewing the work of many investigators who have clearly shown that the temporal characteristics of the discharge have a profound effect upon ignition. Photographic evidence of the early phase of ignition, as well as other evidence from the literature, is also presented. The evidence clearly demonstrates that the morphology of spark kernels in the early phase of development is toroidal, not spherical as suggested by thermal models. A new perspective for ignition, a fluid dynamic point of view, is described. The common ignition devices are then classified according to fluid dynamics. A model describing the behaviour of spark kernels is presented, which extends a previously established mixing model for plasma jets, to the realm of conventional axial discharges. Comparison of the model behaviour to some limited data is made. The model is modified by including the effect of heat addition from combustion, and ignition criteria are discussed.
Advisors/Committee Members: Clements, R. M. (supervisor).
Subjects/Keywords: Spark ignition engines
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APA (6th Edition):
Pitt, P. L. (2018). The early phase of spark ignition. (Thesis). University of Victoria. Retrieved from https://dspace.library.uvic.ca//handle/1828/9664
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):
Pitt, Philip Lawrence. “The early phase of spark ignition.” 2018. Thesis, University of Victoria. Accessed April 14, 2021.
https://dspace.library.uvic.ca//handle/1828/9664.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pitt, Philip Lawrence. “The early phase of spark ignition.” 2018. Web. 14 Apr 2021.
Vancouver:
Pitt PL. The early phase of spark ignition. [Internet] [Thesis]. University of Victoria; 2018. [cited 2021 Apr 14].
Available from: https://dspace.library.uvic.ca//handle/1828/9664.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pitt PL. The early phase of spark ignition. [Thesis]. University of Victoria; 2018. Available from: https://dspace.library.uvic.ca//handle/1828/9664
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Limerick
10.
Madden, Orla.
Investigation of first generation biofuels in diesel engines.
Degree: 2011, University of Limerick
URL: http://hdl.handle.net/10344/1967
► peer-reviewed
In an AC1W IDI Lister Petter diesel engine, ignition delay reduced exponentially with an increase in engine speed for hempseed oil (HSO), camelina seed…
(more)
▼ peer-reviewed
In an AC1W IDI Lister Petter diesel engine, ignition delay reduced exponentially with
an increase in engine speed for hempseed oil (HSO), camelina seed oil (CSO) and rapeseed oil (RSO). The polyunsaturated fuels HSO produced ignition delays which were 0.6 to 12.4%, 18.7 to 32.1% and 10.8 to 26.8% longer than RSO, rapeseed methyl
ester (RME) and mineral diesel (MD) fuel respectively whilst CSO produced ignition
delays which were 0 to 9.8%, 18.4 to 29.1% and 11.8 to 24.8% longer than RSO, RME
and MD fuel respectively. Ignition delays increased with a 5o Crank Angle (CA)
advance in fuel injection timing by 2.7 to 19.2%, 0.9 to 11.1% and 0.12 to 17.0% for
RSO, CSO and HSO respectively. A reduction in ignition delay was noted for RSO,
CSO and HSO by 5 to 7.1%, 1.4 to 9.5% and 7.9 to 13.5% except above 3100rpm at
5 °CA retarded fuel injection timing. Maximum power outputs of HSO (4.12kW), and
CSO(4.38kW) were lower when compared with MD fuel (4.43kW) however maximum power outputs for RSO (4.47kW) and RME (4.63kW) were both higher when compared with MD fuel (4.43kW) at standard fuel injection timing. After 28 days HSO, CSO, RME and WCOME increased in acid value from 8.1 to 178.4% and peroxide value varied from -63.64% to 321.85%. Ignition delay, combustion chamber peak pressure signal and rate of pressure rise were unaffected by storage of the oils. Advancing fuel injection timing by 5 °CA in a 1.5L Tempest (BMC) engine had no significant effect on the power, torque and BMEP for RME, NOx and smoke emissions increased by 10.7 to 41.5% and by 24.5 to 74.3% respectively and CO reduced by 14.4 to 21.6% at BMEP<250kPa; but mean CO was higher by 1.2 to 21.9% for RME for 500kPa>BMEP>250kPa. HSO and CSO gave 4.9% and 5.6% higher maximum power than RSO, 12.6% and 13.3% more than RME and WCOME and 17.4% and 18.1% more
than MD fuel respectively in a 1.8L NA IDI Ford Courier. HSO used 2.6 to 15.9% and
1.8 to 11.2% more fuel than RME and WCOME respectively whilst CSO used 2.1 to
16.3% and 2.1 to 12% more fuel than RME and WCOME respectively except above
3700rpm. HSO and CSO used 9.1 to 42.6% and 0 to 43.1% more fuel than MD fuel for
all engine speeds. Mean NOx increased by 11.4 to 40.2% for HSO and 15.7 to 35.1%
for CSO above 1800rpm compared with RME. NOx was higher by 11.9 to 34.6% for
HSO and by 16.2 to 29.7% higher for CSO for all engine speeds than WCOME. Both
HSO and CSO increased NOx by 6.9 to 55.1% and 5.1 to 56.9% compared with MD fuel above 1800rpm. RME and WCOME gave 2.2 to 26.7% and 1.8 to 25% greater NOx respectively than MD fuel above 3750rpm. After 492kWh use, RME gave carbon deposits on cylinder head, valves, piston crown and fuel injector in a 2kW DI diesel generator and the top piston ring was seized. Carbon build up on the inlet valve and port was between 1.2 x 10-3 and 3.8 x 10-3mm/kWh. An exponential rise in lubricating oil consumption and fuel consumption after 288kWh indicated the start of engine wear out. Neoprene and reinforced polyurethane are not suitable materials for RME fuel…
Advisors/Committee Members: Howard-Hildige, Robin.
Subjects/Keywords: biofuels; diesel engines
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Madden, O. (2011). Investigation of first generation biofuels in diesel engines. (Thesis). University of Limerick. Retrieved from http://hdl.handle.net/10344/1967
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):
Madden, Orla. “Investigation of first generation biofuels in diesel engines.” 2011. Thesis, University of Limerick. Accessed April 14, 2021.
http://hdl.handle.net/10344/1967.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Madden, Orla. “Investigation of first generation biofuels in diesel engines.” 2011. Web. 14 Apr 2021.
Vancouver:
Madden O. Investigation of first generation biofuels in diesel engines. [Internet] [Thesis]. University of Limerick; 2011. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10344/1967.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Madden O. Investigation of first generation biofuels in diesel engines. [Thesis]. University of Limerick; 2011. Available from: http://hdl.handle.net/10344/1967
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Ryerson University
11.
Lu, Zhiliu.
Comparison of cylindrical and non-cylindrical grain internal ballistic behavior of hybrid rocket engines and solid rocket motors.
Degree: 2017, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A7274
► Hybrid rocket engines (HREs) are a chemical propulsion system that nominally combine the advantages of liquid-propellant rocket engines (LREs) and solid-propellant rocket motors (SRMs). HREs…
(more)
▼ Hybrid rocket engines (HREs) are a chemical propulsion system that nominally combine the advantages of liquid-propellant rocket engines (LREs) and solid-propellant rocket motors (SRMs). HREs in some cases can have a higher specific impulse and better controllability than SRMs, and lower cost and engineering complexity than LREs. For HREs and SRMs, both kinds of rocket engine employ a solid fuel grain, and the chosen grain configuration is a crucial point of their design. Different grain configurations have different internal ballistic behavior, which in turn can deliver different engine performance. A cylindrical grain design is a very common design for SRMs and HREs. A non-cylindrical-grain is a more complex grain configuration (than cylindrical) that has been used in many SRMs, and is also a choice for some HREs. However, while an HRE and an SRM can employ the same fuel grain configuration, the resulting internal ballistic behavior would not be expected to be the same. Pressure-dependent burning tends to dominate in SRMs, while axial flow-dependent burning tends to dominate in HREs. To help demonstrate in a more direct manner the influence of the differing combustion processes on the same fuel grain configuration used by an HRE and SRM, a number of internal ballistic simulations are undertaken for the present study. For the reference SRM cases looked at, an internal ballistic simulation program that has the capability of predicting head-end pressure and thrust as a function of time into a simulated firing is utilized for the present investigation; for the corresponding HRE cases, a simulation program is used to simulate the burning and flow process of these engines. For the present investigation, the two simulation programs are used to simulate the internal ballistic performance of various HREs and SRMs employing comparable cylindrical and non-cylindrical fuel grain configurations. The predicted performance results, in terms of pressure and thrust, are consistent with expectations that one would have for both propulsion system types.
Subjects/Keywords: Rocket engines – Combustion – Mathematical models; Rocket engines – Thrust – Mathematical models; Ballistics; Rocket engines
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Lu, Z. (2017). Comparison of cylindrical and non-cylindrical grain internal ballistic behavior of hybrid rocket engines and solid rocket motors. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A7274
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):
Lu, Zhiliu. “Comparison of cylindrical and non-cylindrical grain internal ballistic behavior of hybrid rocket engines and solid rocket motors.” 2017. Thesis, Ryerson University. Accessed April 14, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A7274.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lu, Zhiliu. “Comparison of cylindrical and non-cylindrical grain internal ballistic behavior of hybrid rocket engines and solid rocket motors.” 2017. Web. 14 Apr 2021.
Vancouver:
Lu Z. Comparison of cylindrical and non-cylindrical grain internal ballistic behavior of hybrid rocket engines and solid rocket motors. [Internet] [Thesis]. Ryerson University; 2017. [cited 2021 Apr 14].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7274.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lu Z. Comparison of cylindrical and non-cylindrical grain internal ballistic behavior of hybrid rocket engines and solid rocket motors. [Thesis]. Ryerson University; 2017. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A7274
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
12.
Kroeger, Timothy Herbert.
Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation.
Degree: MS, Mechanical Engineering, 2017, Texas A&M University
URL: http://hdl.handle.net/1969.1/173211
► Low temperature combustion (LTC) is popular among diesel engine researchers because it dramatically reduces NOx and smoke emissions. However, LTC is limited by increased CO…
(more)
▼ Low temperature combustion (LTC) is popular among diesel engine researchers because it dramatically reduces NOx and smoke emissions. However, LTC is limited by increased CO and hydrocarbon emissions as well as by reduced efficiency. At the same time, low heat rejection (LHR) operation has tantalized researchers with the promise of large efficiency improvements, but it has often failed to meet simulated expectations. Since LHR techniques inevitably increase combustion chamber temperatures, the ratio of specific heats of the cylinder contents is decreased, reducing the potential conversion of thermal energy to work. Combining LTC and LHR allows for low heat transfer losses and a high ratio of specific heats, providing the opportunity for increased efficiency.
An experiment was conducted to evaluate potential improvements to a mild LTC mode’s combustion efficiency and thermal efficiency. The experiment used elevated engine coolant temperatures (ECT) to reduce the temperature gradient across the cylinder walls in a 1.9L four-cylinder DI diesel engine. In particular, NOx, smoke, CO, and hydrocarbon emissions were compared between LTC and conventional conditions over the ECT range (from 90 °C to 120 °C), and various measures of efficiency were compared as well. Elevated coolant temperatures reduced the carbon monoxide and hydrocarbon emissions penalties of the LTC mode, improving LTC combustion efficiency. The thermal efficiency of the mild LTC mode was not significantly different from that of the conventional mode, and brake thermal efficiency for both modes improved at higher coolant temperatures.
Advisors/Committee Members: Jacobs, Timothy (advisor), Caton, Jerald (committee member), Karpetis, Adonios (committee member).
Subjects/Keywords: IC engines; diesel engines; compression ignition; low temperature combustion; advanced combustion; low heat rejection engines
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APA ·
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MLA ·
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CSE |
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APA (6th Edition):
Kroeger, T. H. (2017). Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173211
Chicago Manual of Style (16th Edition):
Kroeger, Timothy Herbert. “Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation.” 2017. Masters Thesis, Texas A&M University. Accessed April 14, 2021.
http://hdl.handle.net/1969.1/173211.
MLA Handbook (7th Edition):
Kroeger, Timothy Herbert. “Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation.” 2017. Web. 14 Apr 2021.
Vancouver:
Kroeger TH. Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/1969.1/173211.
Council of Science Editors:
Kroeger TH. Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/173211
University of Pretoria
13.
[No author].
Investigation into a system that can detect improper
combustion in a diesel engine before significant damage can
occur
.
Degree: 2009, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/
► An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their…
(more)
▼ An alarming number of compression ignition (CI)
engines in the transport, mining and heavy engineering environments
have been failing due to combustion irregularities within their
combustion chambers. It has been found that diesel fuels containing
contaminants or diesel fuels with poor lubricity characteristics
lead to stickiness of diesel injector needles, which badly affects
injector spray patterns resulting in the phenomenon of “cold
combustion”. This study has been undertaken to develop a technique
for detecting and preventing the damage resulting from this
deviation in the combustion of a diesel engine. The technique has
been formulated with a view to being as non intrusive as possible,
so as not to require major modification of an existing test engine
to accommodate the technique. The practice of monitoring individual
cylinder exhaust gas temperatures (EGTs) proved to be an effective
way of determining whether potentially destructive combustion
abnormalities were taking place within the diesel engine. By
recording these temperatures at certain stages during the engine’s
operation, taking their average, and comparing each one to this
average it is also possible to isolate the location of the
combustion abnormality. This method proved to be most effective at
full loads and maximum fuel delivery where combustion temperatures
are highest and the effects of poor combustion are most noticeable
and potentially damaging. The second goal was to develop a small,
portable electronic device that makes use of the monitoring
technique developed and provides a visual and audible alarm to
notify a vehicle operator or technician of a combustion fault
within a diesel engine. A Combustion Monitoring System (CMS)
prototype was developed and tested on a small naturally aspirated
engine at the University of Pretoria’s engine testing facilities.
The prototype met its primary goal of detecting simulated
combustion abnormalities under a variety of test conditions. It is
envisaged that the monitoring techniques applied in developing the
CMS unit may eventually be incorporated into the powerful
processing abilities of the modern diesel Engine Control Unit
(ECU). In its current form the CMS prototype is a useful tool in
sensing combustion related malfunctions within a diesel engine and
preventing damage from occurring.
Advisors/Committee Members: Prof N D L Burger (advisor), Prof A von Wielligh (advisor).
Subjects/Keywords: Improper combustion;
Diesel engines;
UCTD
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
author], [. (2009). Investigation into a system that can detect improper
combustion in a diesel engine before significant damage can
occur
. (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-11262009-210133/
Chicago Manual of Style (16th Edition):
author], [No. “Investigation into a system that can detect improper
combustion in a diesel engine before significant damage can
occur
.” 2009. Masters Thesis, University of Pretoria. Accessed April 14, 2021.
http://upetd.up.ac.za/thesis/available/etd-11262009-210133/.
MLA Handbook (7th Edition):
author], [No. “Investigation into a system that can detect improper
combustion in a diesel engine before significant damage can
occur
.” 2009. Web. 14 Apr 2021.
Vancouver:
author] [. Investigation into a system that can detect improper
combustion in a diesel engine before significant damage can
occur
. [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2021 Apr 14].
Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/.
Council of Science Editors:
author] [. Investigation into a system that can detect improper
combustion in a diesel engine before significant damage can
occur
. [Masters Thesis]. University of Pretoria; 2009. Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/
Ryerson University
14.
Velliaris, Alexander.
Scale effects on hybrid rocket engine performance.
Degree: 2017, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A6782
► In the current study, the effects of scaling up a hybrid rocket engine (HRE) in size has on its performance is investigated. A HRE design…
(more)
▼ In the current study, the effects of scaling up a hybrid rocket engine (HRE) in size has on its performance is investigated. A HRE design from a past RU study is selected as the base model to be progressively increased in size while geometric scale is maintained, up to ten times the original’s size. A computer program employing a quasi-steady convective heat feedback burn rate model is used to conduct simulated engine firings. One finding from this study is that the drop-
off in performance for this engine, in going up in size, is not as much as expected. This can be attributed to a conservative oxidizer injection temperature setting in the model, and an oxidizer-fuel ratio mixture influence for this engine that is more impactful. The results presented here however do, to some degree, concur with established trends, with respect to thrust prediction, as the reference HRE is scaled up in size.
Subjects/Keywords: Rocket engines – Thrust – Mathematical models; Rocket engines – Combustion – Mathematical models; Rocket engines – Propulsion systems; Rocket engines – Design and construction
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APA ·
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APA (6th Edition):
Velliaris, A. (2017). Scale effects on hybrid rocket engine performance. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A6782
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):
Velliaris, Alexander. “Scale effects on hybrid rocket engine performance.” 2017. Thesis, Ryerson University. Accessed April 14, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A6782.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Velliaris, Alexander. “Scale effects on hybrid rocket engine performance.” 2017. Web. 14 Apr 2021.
Vancouver:
Velliaris A. Scale effects on hybrid rocket engine performance. [Internet] [Thesis]. Ryerson University; 2017. [cited 2021 Apr 14].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A6782.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Velliaris A. Scale effects on hybrid rocket engine performance. [Thesis]. Ryerson University; 2017. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A6782
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Alberta
15.
Shahbakhti, Mahdi.
Modeling and experimental study of an HCCI engine for
combustion timing control.
Degree: PhD, Department of Mechanical Engineering, 2009, University of Alberta
URL: https://era.library.ualberta.ca/files/x346d4343
► Homogeneous Charge Compression Ignition (HCCI) is a promising method for combustion engines to provide a substantial reduction in fuel consumption and formation of both nitrogen…
(more)
▼ Homogeneous Charge Compression Ignition (HCCI) is a
promising method for combustion engines to provide a substantial
reduction in fuel consumption and formation of both nitrogen oxides
and soot pollutants in automotive and stationary engines. Control
of HCCI combustion timing is essential for the successful
integration of the HCCI concept in real applications. This thesis
concentrates on control oriented modeling and experimental study of
HCCI combustion for control of ignition timing in HCCI engines. A
detailed experimental study of HCCI with over 600 operating points
on two different engines is done to characterize the complex
relationship among the engine variables, the ignition timing and
the exhaust temperature. This leads to identifying regions with
distinct patterns of cyclic variation for HCCI ignition timing. In
addition, main influential factors on the variations of ignition
timing and exhaust temperature in HCCI engines are determined. A
dynamic full-cycle physics based Control Oriented Model(COM) is
derived from using the experimental data and simulations from an
HCCI thermo-kinetic model. The COM is validated with a large number
of transient and steady-state experimental points. The validation
results show that the COM captures the key HCCI dynamics with a
high degree of accuracy for control applications. The COM is
computationally efficient and all inputs of the model can be
readily measured or estimated on a real engine. This makes the COM
simple and fast enough for use as an off-line simulation bed to
design and evaluate different strategies for physics-based control
of combustion timing in HCCI engines.
Subjects/Keywords: Modeling; Combustion engines; HCCI
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APA ·
Chicago ·
MLA ·
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Export
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Manager
APA (6th Edition):
Shahbakhti, M. (2009). Modeling and experimental study of an HCCI engine for
combustion timing control. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/x346d4343
Chicago Manual of Style (16th Edition):
Shahbakhti, Mahdi. “Modeling and experimental study of an HCCI engine for
combustion timing control.” 2009. Doctoral Dissertation, University of Alberta. Accessed April 14, 2021.
https://era.library.ualberta.ca/files/x346d4343.
MLA Handbook (7th Edition):
Shahbakhti, Mahdi. “Modeling and experimental study of an HCCI engine for
combustion timing control.” 2009. Web. 14 Apr 2021.
Vancouver:
Shahbakhti M. Modeling and experimental study of an HCCI engine for
combustion timing control. [Internet] [Doctoral dissertation]. University of Alberta; 2009. [cited 2021 Apr 14].
Available from: https://era.library.ualberta.ca/files/x346d4343.
Council of Science Editors:
Shahbakhti M. Modeling and experimental study of an HCCI engine for
combustion timing control. [Doctoral Dissertation]. University of Alberta; 2009. Available from: https://era.library.ualberta.ca/files/x346d4343
Oregon State University
16.
Okhovat, Sebastian.
Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions.
Degree: MS, Mechanical Engineering, 2015, Oregon State University
URL: http://hdl.handle.net/1957/57994
► Numerous physical and chemical processes are required for successful ignition of a flammable mixture, many of which have been well characterized. However, one aspect of…
(more)
▼ Numerous physical and chemical processes are required for successful ignition of a flammable mixture, many of which have been well characterized. However, one aspect of the ignition process that has received limited consideration is understanding the temperature of the spark kernel. A spark kernel is the volume of heated gas that develops after plasma formation and dissipation by an electrical discharge. Thermal measurements are critical for determining if reactions become self-sustaining and improving the validity of modeling efforts. The need for quantified kernel temperatures is extended to conditions that approach the flow fields within combustion applications, such as gas turbine
engines. Based on the motivation, the focus of this work was to determine the temperature of kernels and investigate the influence a cross-flow has on the temporal temperature evolution. Representative results were compared against kernel temperatures in a quiescent environment to highlight differences between the two flow conditions. In this study, a sunken fire igniter was placed in an open loop wind tunnel and discharged into a non-reacting cross-flow. Kernel temperatures, after the plasma dissipated, were determined from radiation intensity measurements and by solving the radiation transfer equation. The temperature evolution was investigated in a quiescent environment and for a range of cross-flow velocities (5.8-15.6 m/s). For both quiescent and cross-flow conditions, kernels developed into a toroidal vortex. Surrounding air was entrained into the center of the kernel, resulting in relatively lower temperatures compared to the edges. Average peak kernel temperatures in quiescent conditions were 950 K, whereas kernels in a cross-flow approached 1250 K. The higher peak temperatures were attributed to a reduced relative velocity of the vortex caused by the interaction with the cross-flow. This resulted in decreased entrainment, particularly located at the upstream side of the kernel. Most of the temperature evolution of kernels was experienced within 1.3 ms after plasma was no longer detected; up to a 500 K difference was determined between 0.6 and 1.3 ms. Kernels beyond 1.3 ms reached a uniform temperature near 600 K and had little to no variation as radiation intensities dissipated beyond optical detection. Bifurcation of kernels was detected in one-third of all spark events for both quiescent and cross-flow conditions. The sensible energy of kernels was reported to decrease with time for all cases. Higher cross-flow velocities resulted in less sensible energy. This was attributed to a reduction in apparent kernel volume even with higher temperatures.
Advisors/Committee Members: Blunck, David (advisor), Squires, Nancy (committee member).
Subjects/Keywords: cross-flow; Spark ignition engines
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APA (6th Edition):
Okhovat, S. (2015). Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/57994
Chicago Manual of Style (16th Edition):
Okhovat, Sebastian. “Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions.” 2015. Masters Thesis, Oregon State University. Accessed April 14, 2021.
http://hdl.handle.net/1957/57994.
MLA Handbook (7th Edition):
Okhovat, Sebastian. “Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions.” 2015. Web. 14 Apr 2021.
Vancouver:
Okhovat S. Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions. [Internet] [Masters thesis]. Oregon State University; 2015. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/1957/57994.
Council of Science Editors:
Okhovat S. Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions. [Masters Thesis]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/57994
17.
Hassan, Ibnu Anas.
The experimental study and numerical simulation of falling liquid film flow on horizontal tubes.
Degree: Faculty of Mechanical and Manufacturing Engineering, 2017, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/9851/
► This research is motivated by two observations: No report has been found so far in studies of water falling film up to 100 mm intertube…
(more)
▼ This research is motivated by two observations: No report has been found so far in
studies of water falling film up to 100 mm intertube spacing. No simulation analysis
of film thickness under influence of intertube spacing in 3 dimensional models.
Therefore, to the best of author’s knowledge, this research aims to illuminate the
effects of intertube spacing between horizontal tubes on water falling film. An
experimental investigation of water falling film temperature was conducted to
explore the characteristics of heat transfer coefficients. In this study, the intertube
spacing from smallest size of 8 mm and up to 100 mm were analyzed for Reynolds
number range of 300 to 3300. The experimental data was extracted from calibrated
test rig and the effect is investigated using numerical study. On the other hand, the
effect of film thickness is numerically investigated for intertube spacing range of 10
mm to 40 mm. The numerical simulation was presented using the Volume of Fluid
(VOF) technique where it is capable in determining temperatures and thickness of
water falling film under influence of ambient factors. The experimental results reveal
that intertube spacing of 133 mm produced the maximum heat transfer coefficient of
6 kW/m² K with percentage of error below 7%. The results of the numerical
simulation indicate that the 40 mm intertube spacing presented the minimal average
film thickness of 0.3 mm within ± 50% errors. Implications of the results and future
research directions are also presented.
Subjects/Keywords: TJ255-265 Heat engines
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APA (6th Edition):
Hassan, I. A. (2017). The experimental study and numerical simulation of falling liquid film flow on horizontal tubes. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/9851/
Chicago Manual of Style (16th Edition):
Hassan, Ibnu Anas. “The experimental study and numerical simulation of falling liquid film flow on horizontal tubes.” 2017. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/9851/.
MLA Handbook (7th Edition):
Hassan, Ibnu Anas. “The experimental study and numerical simulation of falling liquid film flow on horizontal tubes.” 2017. Web. 14 Apr 2021.
Vancouver:
Hassan IA. The experimental study and numerical simulation of falling liquid film flow on horizontal tubes. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2017. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/9851/.
Council of Science Editors:
Hassan IA. The experimental study and numerical simulation of falling liquid film flow on horizontal tubes. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2017. Available from: http://eprints.uthm.edu.my/id/eprint/9851/
18.
Alakashi, Abobaker Mohammed.
Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length).
Degree: Fakulti Kejuruteraan Mekanikal dan Pembuatan, 2011, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/1723/
► The purpose of this research is to study pressure drop and heat transfer characteristics in a tube bank heat exchanger with triangular arrangements by using…
(more)
▼ The purpose of this research is to study pressure drop and heat transfer characteristics in a tube bank heat exchanger with triangular arrangements by using Computational Fluid Dynamics (CFD). Given the importance of wide practical applications in our lives for heat exchanger. We can improve the thermal and hydraulic performance for heat exchangers by several ways same like adding integral wake splitters (fins) on tubes to reduce pressure drop and increase heat transfer across tube bank. When the flow of fluid through the tube banks in the heat exchanger, there is a rise in pressure drop and decrease in heat transfer, to reduce pressure drop and increase heat transfer through the tube banks must consider how to improve and develop the arrangement of tubes (diameter, length, St and Sl) for tube bank in heat exchanger, To improving the thermal and hydraulic performance of these heat exchangers have been reached several ways to improve performance like adding a new set of integral wake splitter (0.5D, 1D with different direction) on tube bank. For this study we used the 395 x 395 x 1230 mm test section size. The geometric layout of the tube bank is staggered with seven rows of five tubes in each row. The tube diameter, transverse pitch and horizontal pitch are 48.5 mm, 79 mm and 65.8 mm respectively. The analysis was at different values of Reynolds number between (5000 < Re > 27800). The temperature of air was (290 K), and heat flux for each tube was (5250 W/m2).
Subjects/Keywords: TJ255-265 Heat engines
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APA (6th Edition):
Alakashi, A. M. (2011). Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length). (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/1723/
Chicago Manual of Style (16th Edition):
Alakashi, Abobaker Mohammed. “Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length).” 2011. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/1723/.
MLA Handbook (7th Edition):
Alakashi, Abobaker Mohammed. “Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length).” 2011. Web. 14 Apr 2021.
Vancouver:
Alakashi AM. Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length). [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2011. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/1723/.
Council of Science Editors:
Alakashi AM. Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length). [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2011. Available from: http://eprints.uthm.edu.my/id/eprint/1723/
19.
Sasi Koshad , Rabia Abrahim.
CFD simulation of heat transfer in vertical ribbed tube
.
Degree: Fakulti Kejuruteraan Mekanikal dan Pembuatan, 2011, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/1745/
► Computational Fluid Dynamics (CFD) simulation of heat transfer and fluid flow analysis in the turbulent flow regime in a spirally ribbed tube and a smooth…
(more)
▼ Computational Fluid Dynamics (CFD) simulation of heat transfer and fluid flow analysis in the turbulent flow regime in a spirally ribbed tube and a smooth tube in vertical orientation are presented in this thesis. The ribbed tube has outside diameter of 25mm, maximum inner diameter of 18.80mm, minimum inner diameter of 17.50mm and helix angle of 60o .The smooth tube has outside diameter of 26.7mm and inner diameter of 18.88mm. Both tubes were uniformly heated by passing an electrical current along the tube with a heated length of 1000mm. The CFD simulation was conducted on a vertical orientation of the steel tubes (rifled and smooth) under six different inlet velocities of 0.893m/s, 1.786m/s, 2.38m/s, 2.976m/s,3.57m/s and 4.166m/s. The objective of this thesis is to determine the heat transfer and pressure drop in both vertical smooth and ribbed tubes. The fluid used is water and the initial temperature is 25 °C. The heat flux that for heating the tube is equal to 150KW/m2. During the CFD simulation analysis it was found that for smooth tube at lower inlet velocity, the temperature increases from 2980K to 307.50K while the pressure drop between inlet and outlet is equal to 741.34 Pa. At higher inlet velocity, the temperature for smooth tube is found increasing from 2980K to 3000K, with the pressure drop is equal to 9402.44 Pa. For the ribbed tube at lower inlet velocity the temperature is increasing from 2980K to 308.50K, with the pressure drop is found to be
1655.5 Pa. In the case of a higher inlet velocity, the temperature increase in ribbed tube is increasing from 2980K to 300.40K, while the pressure drop is equal to 23166.5 Pa. It is clear that the temperature difference between ribbed and smooth tube at lower inlet velocity are equal to 10.190K and 9.270K, respectively. While at higher inlet velocity their, temperature difference become 2.2 0K, and 1.8 0K respectively. At the heat flux equal to 300KW/m2 and inlet velocity equal to 0.893 m/s, the temperature difference
viii
between ribbed and smooth tubes are 21.010K and 17.950K respectively. This result indicates that the ribbed tube has higher heat transfer efficiency than the smooth tube. The pressure drop in the ribbed tube is also found to be less than that of the smooth tube. This clearly shows that the characteristic of ribbed tube is much better than smooth tube. Thus the ribbed tube is able to enhance the heats transfer capability for fluid flow in the tube.
Subjects/Keywords: TJ255-265 Heat engines
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Manager
APA (6th Edition):
Sasi Koshad , R. A. (2011). CFD simulation of heat transfer in vertical ribbed tube
. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/1745/
Chicago Manual of Style (16th Edition):
Sasi Koshad , Rabia Abrahim. “CFD simulation of heat transfer in vertical ribbed tube
.” 2011. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/1745/.
MLA Handbook (7th Edition):
Sasi Koshad , Rabia Abrahim. “CFD simulation of heat transfer in vertical ribbed tube
.” 2011. Web. 14 Apr 2021.
Vancouver:
Sasi Koshad RA. CFD simulation of heat transfer in vertical ribbed tube
. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2011. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/1745/.
Council of Science Editors:
Sasi Koshad RA. CFD simulation of heat transfer in vertical ribbed tube
. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2011. Available from: http://eprints.uthm.edu.my/id/eprint/1745/
20.
Yahaya, Mohd Zubir.
Evaluation of heat exchanger on thermoacoustic performance.
Degree: Fakulti Kejuruteraan Mekanikal dan Pembuatan, 2013, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/4717/
► Thermoacoustic devices have the potential to provide electricity from waste heat to more efficiently use energy resources and to provide new access to electricity for…
(more)
▼ Thermoacoustic devices have the potential to provide electricity from waste heat to more efficiently use energy resources and to provide new access to electricity for millions of persons around the world. There are many factor influence thermoacoustic performance and this study was focused on a new design of thermoacoustic’s heat exchanger and evaluation of its performance in terms of thermal analysis. Through several ideas from researchers in this field, this study was produced with three designs of heat exchangers which are wiretype, fingertype and startype that specifically one of them will be used in experimental test later. Theoretical analysis shows that heat conduction through a full body of heat exchanger are 67.36 W and 39.81 W for both copper and aluminium. Analyzing heat conduction of a fin separately by types of heat exchangers, the highest value of heat conduction through a fin was recorded by startype heat exchanger’s fin using copper as material which is 32.84 W. By using ANSYS-CFX software, the heat exchanger’s designs were simulated with two thermal conditions which are steady state conduction and transient conduction by substituting material between copper and aluminium to see the engagement between theoretical analysis and numerical analysis. There are three inlet temperatures that are assumed will be supplied by constant waste heat which are 200°C, 350°C and 500°C. The simulation on both steady state and transient condition found the copper is better in thermal or heat conductor than aluminium due to high value of thermal conductivity, k. In terms of design, startype heat exchanger recorded the fastest time to distribute temperature compared to wiretype and fingertype heat exchanger. As a conclusion, the combination between startype design and copper material will produce the best heat exchanger that will be used in experimental test of thermoacoustic system.
Subjects/Keywords: TJ255-265 Heat engines
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APA (6th Edition):
Yahaya, M. Z. (2013). Evaluation of heat exchanger on thermoacoustic performance. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/4717/
Chicago Manual of Style (16th Edition):
Yahaya, Mohd Zubir. “Evaluation of heat exchanger on thermoacoustic performance.” 2013. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/4717/.
MLA Handbook (7th Edition):
Yahaya, Mohd Zubir. “Evaluation of heat exchanger on thermoacoustic performance.” 2013. Web. 14 Apr 2021.
Vancouver:
Yahaya MZ. Evaluation of heat exchanger on thermoacoustic performance. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2013. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/4717/.
Council of Science Editors:
Yahaya MZ. Evaluation of heat exchanger on thermoacoustic performance. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2013. Available from: http://eprints.uthm.edu.my/id/eprint/4717/
21.
Alfan, Norman Hafizi.
Analysis of characteristic heat pipe as an efficient cooling heat transfer device.
Degree: Fakulti Kejuruteraan Mekanikal dan Pembuatan, 2013, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/4730/
► A heat pipe is a simple heat transfer device that can transport large quantities of heat with a very small difference in temperature between the…
(more)
▼ A heat pipe is a simple heat transfer device that can transport large quantities of heat with a very small difference in temperature between the hot ends to the other end. In this case study, the concept of the condensation process of heat pipe is applied in order to perform dehumidification process to remove extra moisture inside the air. The objective of this study is to compare the efficiency between the primary heat pipe in evacuated condition and the secondary heat pipe with water as the working fluid in order to perform the dehumidification process. The heat pipe device had been divided into 2 samples of specimens. First specimen of heat pipe using air whiles the other one used water as the working fluid. These two pipes were made without the wick but dealing with inclination of angle to see the performance of the heat pipe. These two heat pipes were built without the wick but dealing with inclination of angle to see the performance of the heat pipe. Both pipes were built by the total length of 400mm length and 8mm diameter using copper as the pipe material. Gravity pumping was used with the inclination angle to pump back the working fluid back to the evaporator section. The heat pipe was positioned at different angles of 0°, 30°, 60° and 90° with the horizontal. To achieve the objective of this study, both pipes were studied experimental and simulation to find the most efficiency between the primary heat pipe and the secondary heat pipe. The important parameter involves in the case study are the Merit Number, M and Heat Transfer Coefficient. After performing the experiments and simulation, the objective of this case study is achieved, which showed the secondary heat pipe is more efficient as a cooling heat transfer device.
Subjects/Keywords: TJ255-265 Heat engines
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APA (6th Edition):
Alfan, N. H. (2013). Analysis of characteristic heat pipe as an efficient cooling heat transfer device. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/4730/
Chicago Manual of Style (16th Edition):
Alfan, Norman Hafizi. “Analysis of characteristic heat pipe as an efficient cooling heat transfer device.” 2013. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/4730/.
MLA Handbook (7th Edition):
Alfan, Norman Hafizi. “Analysis of characteristic heat pipe as an efficient cooling heat transfer device.” 2013. Web. 14 Apr 2021.
Vancouver:
Alfan NH. Analysis of characteristic heat pipe as an efficient cooling heat transfer device. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2013. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/4730/.
Council of Science Editors:
Alfan NH. Analysis of characteristic heat pipe as an efficient cooling heat transfer device. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2013. Available from: http://eprints.uthm.edu.my/id/eprint/4730/
22.
Othman, Nurul Hasanah.
System identification of heat exchanger using generalized poisson moment functional (GPMF).
Degree: Fakulti Kejuruteraan Elektrik dan Elektronik, 2014, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/5534/
► This project present a system identification of heat exchanger using Generalized Poisson Moment Functional (GPMF) method based on Instrumental Variable (IV) algorithm and Least Square.…
(more)
▼ This project present a system identification of heat exchanger using Generalized Poisson Moment Functional (GPMF) method based on Instrumental Variable (IV) algorithm and Least Square. The purpose of this project is to develop a mathematical model from input-output data that properly represents the heat exchanger QAD BDT 921 system characteristics.The MATLAB coding consists of data pre-processing, parameter estimation, model validation and model simulation. A validation process had been implemented. Simulation process based on the estimated mathematical model was performed to analyze the dynamic behaviours of the model. The comparison between IV and Least Square Estimator is performed to compare the accurate estimation. From the simulation results and analysis, it could be concluded that the model obtained is reliable.
Subjects/Keywords: TJ255-265 Heat engines
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APA ·
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APA (6th Edition):
Othman, N. H. (2014). System identification of heat exchanger using generalized poisson moment functional (GPMF). (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/5534/
Chicago Manual of Style (16th Edition):
Othman, Nurul Hasanah. “System identification of heat exchanger using generalized poisson moment functional (GPMF).” 2014. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/5534/.
MLA Handbook (7th Edition):
Othman, Nurul Hasanah. “System identification of heat exchanger using generalized poisson moment functional (GPMF).” 2014. Web. 14 Apr 2021.
Vancouver:
Othman NH. System identification of heat exchanger using generalized poisson moment functional (GPMF). [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2014. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/5534/.
Council of Science Editors:
Othman NH. System identification of heat exchanger using generalized poisson moment functional (GPMF). [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2014. Available from: http://eprints.uthm.edu.my/id/eprint/5534/
23.
Tajaldin Moner, Mawahwab Abdalhamid.
Experimental study of heat transfer distribution between an obliquely smooth flat plate and impinging air jet from circular nozzle.
Degree: Fakulti Kejuruteraan Mekanikal dan Pembuatan, 2013, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/5850/
► An experimental investigation is performed to study the effects of the plate angle, jet-to-plate spacing and Reynolds number on the local heat transfer distribution between…
(more)
▼ An experimental investigation is performed to study the effects of the plate angle,
jet-to-plate spacing and Reynolds number on the local heat transfer distribution
between an obliquely smooth flat plate and impinging circular air jet. In the
experiments, the plate angles selected were 90°, 60" and 45", with 90' being
a vertical jet. Reynolds number based on nozzle exit condition is varied from 12013,
15000 and 23016 and jet-to-plate spacing (LID= 2, 4, 6, and 8). The local heat
transfer coefficients are estimated fiom the temperatures obtained from infrared
thermal imaging camera. The results show that the heat transfer coefficient, h is
higher at the stagnation region and decrease gradually at outlet region. The heat
transfer coefficients increases by increasing Reynolds number and decreasing L/D
ratio. The displacement region of maximum heat transfer coefficient (minimum
temperature point) on the plate was measured with respect to geometrical
impingement point. Results of experiments indicated that for a given position this
displacement increases with increasing the plate angle (less than 90°), and the
displacement was occurred on compression side of plate.
Subjects/Keywords: TJ255-265 Heat engines
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tajaldin Moner, M. A. (2013). Experimental study of heat transfer distribution between an obliquely smooth flat plate and impinging air jet from circular nozzle. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/5850/
Chicago Manual of Style (16th Edition):
Tajaldin Moner, Mawahwab Abdalhamid. “Experimental study of heat transfer distribution between an obliquely smooth flat plate and impinging air jet from circular nozzle.” 2013. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/5850/.
MLA Handbook (7th Edition):
Tajaldin Moner, Mawahwab Abdalhamid. “Experimental study of heat transfer distribution between an obliquely smooth flat plate and impinging air jet from circular nozzle.” 2013. Web. 14 Apr 2021.
Vancouver:
Tajaldin Moner MA. Experimental study of heat transfer distribution between an obliquely smooth flat plate and impinging air jet from circular nozzle. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2013. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/5850/.
Council of Science Editors:
Tajaldin Moner MA. Experimental study of heat transfer distribution between an obliquely smooth flat plate and impinging air jet from circular nozzle. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2013. Available from: http://eprints.uthm.edu.my/id/eprint/5850/
24.
Ali, Firdaus.
Measuring misalignment of valve seats using eddy current inspection method.
Degree: Fakulti Kejuruteraan Elektrik dan Elektronik, 2015, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/7715/
► Valve seat inserts are one of the vital part of the valve train in internal combustion engines, as they are the interface between the valve…
(more)
▼ Valve seat inserts are one of the vital part of the valve train in internal combustion
engines, as they are the interface between the valve and the cylinder head. Valve and
valve seat embeds together serve to seal off the combustion chamber regulating the
inlet and exhaust gases. The valve seat insert avoids immediate contact of the valve
with the cylinder head and absorbs part of the combustion heat which is transfered to
the valve by passing it on to the cylinder head. Therefore, misalignment of the valve
seat during manufacturing could result in engine failure. This project proposes a
valve seat insert misalignment measurement using the concept of eddy current
inspection method. Eddy current inspection method permit flaw detection in a large
variety of conductive materials, either ferromagnetic or non-ferromagnetic.
Simulation to study the change in induced current density and magnetic density
around the valve seat and cylinder head due to the magnetic field generated by an
exciting coil was conduct using COMSOL Multiphysics 4.4. Based on the simulation
result, it is observed that the change in gap width between valve seat and cylinder
head will interfere the eddy current path which caused in the change of induced
current density and magnetic flux density.
Subjects/Keywords: TJ255-265 Heat engines
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APA (6th Edition):
Ali, F. (2015). Measuring misalignment of valve seats using eddy current inspection method. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/7715/
Chicago Manual of Style (16th Edition):
Ali, Firdaus. “Measuring misalignment of valve seats using eddy current inspection method.” 2015. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/7715/.
MLA Handbook (7th Edition):
Ali, Firdaus. “Measuring misalignment of valve seats using eddy current inspection method.” 2015. Web. 14 Apr 2021.
Vancouver:
Ali F. Measuring misalignment of valve seats using eddy current inspection method. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2015. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/7715/.
Council of Science Editors:
Ali F. Measuring misalignment of valve seats using eddy current inspection method. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2015. Available from: http://eprints.uthm.edu.my/id/eprint/7715/
25.
Osman, Shahrul Azmir.
Characterization of A C.I. engine operated using retrofit
monogas fuelling concept.
Degree: phd, Faculty of Mechanical and Manufacturing Engineering, 2014, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/7848/
► Recently, logistics and haulage companies are considering using CNG for their existing compression ignition (C.I.) engines. In an effort to address this challenge, a parametric…
(more)
▼ Recently, logistics and haulage companies are considering using CNG for their
existing compression ignition (C.I.) engines. In an effort to address this challenge, a
parametric study on a medium duty C.I. engine (naturally aspirated, 4.3L, 4-cylinder)
operated using retrofitted Monogas concept is presented. Extensive simulation (GTPower
software) and experimental works using an engine test bed had been carried
out to characterize the Monogas engine. Generally, successful retrofitting demands
modifications in combustion chamber profiles, compression ratio, fuelling, ignition
timing, intake, and exhaust systems. The optimum re-entrance (RE) and toroidal
radius (TR) ratio for retrofitting must be between 0.16 and 0.60, for a compression
ratio (CR) of 11:1. From the various combustion chamber profile designs, the design
with lower central projection and RE to TR ratio of 0.16 was considered as the
optimum combustion chamber geometry profile. Using this design, the 4.3L C.I.
engine was successfully converted and tested at steady state engine conditions and
selected set-points driving cycle. The findings from the simulation showed that the
tested Monogas engine exhibited lower brake torque (BT) and brake power (BP) in
the range of 13% - 19%. It also produced lower CO2 (59%), CO (85%) and NOX
(85%) emissions, with the penalties of HC emissions and brake specific fuel
consumption (BSFC); increase of 85% and 13% respectively. Comparisons with
experimental works using C.I. engine had concluded that the Monogas engine was
operating with high BSFC with an improved volumetric efficiency ( ) in the range
of 40% to 58%. It also released lower CO (68%) and HC (48%) emissions, and high
CO2 emissions, indicating high combustion efficiency. However, NOX emissions
were higher in both experimental settings, whereas HC emissions were observed to
be higher during the driving cycle set-point tests. Therefore, the methodology
developed offers a successful C.I. engine converted to Monogas engine system via
retrofit technology and an opening for future development and characterization into
comprehensive support for implementation of energy efficient and environmental
friendly vehicles.
Subjects/Keywords: TJ255-265 Heat engines
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APA (6th Edition):
Osman, S. A. (2014). Characterization of A C.I. engine operated using retrofit
monogas fuelling concept. (Doctoral Dissertation). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/7848/
Chicago Manual of Style (16th Edition):
Osman, Shahrul Azmir. “Characterization of A C.I. engine operated using retrofit
monogas fuelling concept.” 2014. Doctoral Dissertation, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/7848/.
MLA Handbook (7th Edition):
Osman, Shahrul Azmir. “Characterization of A C.I. engine operated using retrofit
monogas fuelling concept.” 2014. Web. 14 Apr 2021.
Vancouver:
Osman SA. Characterization of A C.I. engine operated using retrofit
monogas fuelling concept. [Internet] [Doctoral dissertation]. Universiti Tun Hussein Onn Malaysia; 2014. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/7848/.
Council of Science Editors:
Osman SA. Characterization of A C.I. engine operated using retrofit
monogas fuelling concept. [Doctoral Dissertation]. Universiti Tun Hussein Onn Malaysia; 2014. Available from: http://eprints.uthm.edu.my/id/eprint/7848/
26.
Noranai, Zamri.
Development of thermal energy storage simulation and modelling for high capacity building.
Degree: phd, Faculty of Mechanical and Manufacturing Engineering, 2016, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/9033/
► Energy is necessity in daily life. Sources of energy from fossil includes coal, gas and petroleum have been used to generate electricity for centuries. Energy…
(more)
▼ Energy is necessity in daily life. Sources of energy from fossil includes coal, gas and petroleum have been used to generate electricity for centuries. Energy resources have been scarce and this leads to continual increasing of electricity cost. Commercial building has not been spared from the effects of the rising cost in electricity. Air conditioning has been the largest contributor to the cost of electricity for building. Appropriate actions are needed to resolve the problem of this rising cost. Thermal Energy Storage is one of the measures for reducing the cost of electricity. The development of A Thermal Energy Storage Simulation and Modeling TESSM has been design and develop to help non-technical person to calculate cooling load, potential cost savings and economic analysis for application of thermal energy storage in buildings. TESSM has been developed using Matlab GUI software. Appling the TESSM case study on sample of UTHM building showed that a potential saving annual electricity cost by 30%. The TESSM is a user-friendly program, where users from various backgrounds are able to make decisions for the application of thermal energy storage in their buildings with the result reducing total electricity costs significantly.
Subjects/Keywords: TJ255-265 Heat engines
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Noranai, Z. (2016). Development of thermal energy storage simulation and modelling for high capacity building. (Doctoral Dissertation). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/9033/
Chicago Manual of Style (16th Edition):
Noranai, Zamri. “Development of thermal energy storage simulation and modelling for high capacity building.” 2016. Doctoral Dissertation, Universiti Tun Hussein Onn Malaysia. Accessed April 14, 2021.
http://eprints.uthm.edu.my/id/eprint/9033/.
MLA Handbook (7th Edition):
Noranai, Zamri. “Development of thermal energy storage simulation and modelling for high capacity building.” 2016. Web. 14 Apr 2021.
Vancouver:
Noranai Z. Development of thermal energy storage simulation and modelling for high capacity building. [Internet] [Doctoral dissertation]. Universiti Tun Hussein Onn Malaysia; 2016. [cited 2021 Apr 14].
Available from: http://eprints.uthm.edu.my/id/eprint/9033/.
Council of Science Editors:
Noranai Z. Development of thermal energy storage simulation and modelling for high capacity building. [Doctoral Dissertation]. Universiti Tun Hussein Onn Malaysia; 2016. Available from: http://eprints.uthm.edu.my/id/eprint/9033/
Vanderbilt University
27.
Yong, Chao.
A virtual-cam based control methodology for free-piston engines.
Degree: PhD, Mechanical Engineering, 2011, Vanderbilt University
URL: http://hdl.handle.net/1803/13688
► In conventional internal combustion engines, valves are opened and closed using a cam surface. The cam is kinematically related to the piston positions through the…
(more)
▼ In conventional internal combustion
engines, valves are opened and closed using a cam surface. The cam is kinematically related to the piston positions through the crankshaft and timing belt. In contrast, there is no crankshaft or kinematic cam surface in a free-piston engine to physically realize this mechanism. As a consequence, a free-piston engine has variable stroke lengths, which presents a challenge for active piston motion and precise stroke length control. For instance, the free-piston engine configuration is well suited for HCCI
engines because the requirements for accurate ignition timing control are very flexible due to the fact that the piston motion is not restricted by crank-rod mechanism. However, accurate piston motion control is a challenge for HCCI free-piston
engines [4]. This chapter presents a virtual-cam based approach to relate free-piston motion to actuated engine valve control within a clear and familiar intuitive physical context. The primary functionality of the virtual cam control framework is to create a repetitive index, which can be modified from cycle to cycle, for the exhaust/injection valves and spark timing similar to the function of physical cams in conventional
engines. Since the cam is virtually created, it can be dynamically rebuilt to comply with cycle-to-cycle variations such as amount of the air/fuel supply, engine load and stroke length. This index rebuilding process is based on a cycle-to-cycle adaptive control method that uses the knowledge obtained from previous cycles to adjust the cam parameters. Experimental results are presented for a novel liquid-piston free-piston engine intended as a compact and efficient energy source for untethered power dense pneumatic systems such as untethered robots.
Advisors/Committee Members: George E. Cook (committee member), Robert J. Webster (committee member), Michael Goldfarb (committee member), Nilanjan Sarkar (committee member), Eric J. Barth (Committee Chair).
Subjects/Keywords: free-piston engines; Control
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APA ·
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yong, C. (2011). A virtual-cam based control methodology for free-piston engines. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/13688
Chicago Manual of Style (16th Edition):
Yong, Chao. “A virtual-cam based control methodology for free-piston engines.” 2011. Doctoral Dissertation, Vanderbilt University. Accessed April 14, 2021.
http://hdl.handle.net/1803/13688.
MLA Handbook (7th Edition):
Yong, Chao. “A virtual-cam based control methodology for free-piston engines.” 2011. Web. 14 Apr 2021.
Vancouver:
Yong C. A virtual-cam based control methodology for free-piston engines. [Internet] [Doctoral dissertation]. Vanderbilt University; 2011. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/1803/13688.
Council of Science Editors:
Yong C. A virtual-cam based control methodology for free-piston engines. [Doctoral Dissertation]. Vanderbilt University; 2011. Available from: http://hdl.handle.net/1803/13688
28.
Azmeera, Aruna Kumari.
Combustion and emission characteristics of di diesel
engines using bio diesel; -.
Degree: Mechanical, 2013, Jawaharlal Nehru Technological University, Hyderabad
URL: http://shodhganga.inflibnet.ac.in/handle/10603/16389
► Now a days for any country energy resourses in particular petroleum products have become important for its development. The products derived from crude oil continued…
(more)
▼ Now a days for any country energy resourses in
particular petroleum products have become important for its
development. The products derived from crude oil continued to be
the major and critical source of energy for transportation sector
all over the world. For economic development of any country both
industries and transportation sectors are very important for a
growth of country like India. It is strongly depends on
transportation and power generation. It is learnt that the fossil
fuel are depleting at faster rate than expected. Hence the
increasing demand of fossil fuel leads to exhaust of petroleum
products in near future. In this connection the rising price of
petroleum products and environmental concern lead to intensive
studies on the use of alternative fuels.
References p. 183 - 209
Advisors/Committee Members: Reddy, K Vijaya Kumar.
Subjects/Keywords: Characteristics; Combustion; Diesel; Emission; Engines
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APA ·
Chicago ·
MLA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Azmeera, A. K. (2013). Combustion and emission characteristics of di diesel
engines using bio diesel; -. (Thesis). Jawaharlal Nehru Technological University, Hyderabad. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/16389
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):
Azmeera, Aruna Kumari. “Combustion and emission characteristics of di diesel
engines using bio diesel; -.” 2013. Thesis, Jawaharlal Nehru Technological University, Hyderabad. Accessed April 14, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/16389.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Azmeera, Aruna Kumari. “Combustion and emission characteristics of di diesel
engines using bio diesel; -.” 2013. Web. 14 Apr 2021.
Vancouver:
Azmeera AK. Combustion and emission characteristics of di diesel
engines using bio diesel; -. [Internet] [Thesis]. Jawaharlal Nehru Technological University, Hyderabad; 2013. [cited 2021 Apr 14].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16389.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Azmeera AK. Combustion and emission characteristics of di diesel
engines using bio diesel; -. [Thesis]. Jawaharlal Nehru Technological University, Hyderabad; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16389
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Nelson Mandela Metropolitan University
29.
Homann, Gregor.
Preconditioning measurement and control system for a combustion engine in a vehicle.
Degree: MA, Faculty of Engineering, the Built Environment and Information Technology, 2011, Nelson Mandela Metropolitan University
URL: http://hdl.handle.net/10948/d1010998
► Modern vehicles have to ful ll new CO2 emission and additionally customer comfort requirements to stay competitive. A major impact to the fuel consumption of…
(more)
▼ Modern vehicles have to ful ll new CO2 emission and additionally customer comfort requirements to stay competitive. A major impact to the fuel consumption of an internal combustion engine (ICE) has the starting period. An ICE equipped with a preconditioning system which heats up the ICE much faster than a common ICE. This procedure of preconditioning is called peak heating. The main bene t of preconditioning of an ICE is less fuel consumption. Recently the only way to obtain a fast heating up of an ICE is the injection of a higher amount of fuel during the starting period. This heat up procedure can be changed if a heat reservoir is available to the ICE during the starting period. In this case the additional injection of fuel is redundant and therefore the consumption during the starting period can be reduced. The major advantages of this strategy are achieved in cold ambient conditions. During this project di erent preconditioning strategies and di erent points of interaction in the coolant circuit of an ICE have been investigated. The preconditioning concepts have been evaluated according to their heating up performance and their implementation into the engine compartment. The results obtained by this project highlight that a system layout which enables a preheating of the cylinder block by a heat reservoir located in a bypass-line to the heater core is the most e ective point of interaction. The best results have been achieved with a coolant ow of 10 l/min at a temperature of 90 C. Furthermore, this project points out that the implementation of a preconditioning system into the oil cooler will achieve similar results. This strategy of preconditioning the engine oil reduces the internal frictions of the ICE which leads to a decreasing consumption. This solution is much more energy e cient and technically easier to implement into a modern vehicle with its limited space. An additional side e ect of the preconditioning of the oil is a longer service life of the ICE
Advisors/Committee Members: Van Niekerk, T I Prof Dr, Holdack-Janssen, H Prof Dr.
Subjects/Keywords: Internal combustion engines; Mechanical engineering
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Homann, G. (2011). Preconditioning measurement and control system for a combustion engine in a vehicle. (Masters Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1010998
Chicago Manual of Style (16th Edition):
Homann, Gregor. “Preconditioning measurement and control system for a combustion engine in a vehicle.” 2011. Masters Thesis, Nelson Mandela Metropolitan University. Accessed April 14, 2021.
http://hdl.handle.net/10948/d1010998.
MLA Handbook (7th Edition):
Homann, Gregor. “Preconditioning measurement and control system for a combustion engine in a vehicle.” 2011. Web. 14 Apr 2021.
Vancouver:
Homann G. Preconditioning measurement and control system for a combustion engine in a vehicle. [Internet] [Masters thesis]. Nelson Mandela Metropolitan University; 2011. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10948/d1010998.
Council of Science Editors:
Homann G. Preconditioning measurement and control system for a combustion engine in a vehicle. [Masters Thesis]. Nelson Mandela Metropolitan University; 2011. Available from: http://hdl.handle.net/10948/d1010998
Anna University
30.
Murugesan A.
Experimental and theoretical Investigation of using bio
diesel in Diesel engines;.
Degree: Experimental and theoretical Investigation of using
bio diesel in Diesel engines, 2015, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/35505
► newlineEver increasing consumption of fossil fuel and petroleum products newlinehas been a matter of great concern for India The huge out go of foreign newlineexchange…
(more)
▼ newlineEver increasing consumption of fossil fuel
and petroleum products newlinehas been a matter of great concern
for India The huge out go of foreign newlineexchange on one hand
and the increase in the price of crude oil on the other newlinehand
have affected the development of India This has led to the increase
in newlineinflation upto 11 91 as on July 2008 Apart from this
pollution and related newlinehealth hazards global warming climatic
change energy security depletion of newlinefossil fuel and problems
related to transport and distribution of non renewable
newlineconventional fuels have propelled alternative energy and
related technologies newlineto the fore front of national agenda
The consumption of diesel fuel is six newlinetimes higher than that
of gasoline in India and even a few percentage of
newlinesubstitution for diesel fuel will save a considerable amount
of foreign newlineexchange India has high potential for producing
liquid bio fuels like ethanol newlinemethanol bio diesel etc Bio
diesel is considered to be a promising alternative newlineto fossil
fuels world wide Because it is derived from renewable resources
newline plants this can greatly improve energy security and
prevents the shortage of newlineconventional fuel newlineIn this
present work four different blend ratios of esters in varying
newlineproportions viz 20 40 60 80 with diesel and pure esters bio
diesel newlineare used for investigating performance combustion and
emission newlinecharacteristics The esters and their blends were
prepared in laboratory newline newline
appendix p201-207, reference
p208-219.
Advisors/Committee Members: Nedunchezhian N.
Subjects/Keywords: Bio diesel; Diesel engines
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
A, M. (2015). Experimental and theoretical Investigation of using bio
diesel in Diesel engines;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/35505
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):
A, Murugesan. “Experimental and theoretical Investigation of using bio
diesel in Diesel engines;.” 2015. Thesis, Anna University. Accessed April 14, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/35505.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
A, Murugesan. “Experimental and theoretical Investigation of using bio
diesel in Diesel engines;.” 2015. Web. 14 Apr 2021.
Vancouver:
A M. Experimental and theoretical Investigation of using bio
diesel in Diesel engines;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Apr 14].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/35505.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
A M. Experimental and theoretical Investigation of using bio
diesel in Diesel engines;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/35505
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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Open Access Theses and Dissertations