+publisher:"University of Kansas" +contributor:("Depcik, Christopher")

University of Kansas

1. Mangus, Michael D. Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis.

Degree: MS, Mechanical Engineering, 2012, University of Kansas

URL: http://hdl.handle.net/1808/9828

► Due to an increased global interest in sustainable energy sources, it is imperative that the transportation sector find substitutes for the limited petroleum supply, such… (more)

Subjects/Keywords: Mechanical engineering; Biodiesel; Combustion; Engine; Labview

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APA (6^th Edition):

Mangus, M. D. (2012). Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/9828

Chicago Manual of Style (16^th Edition):

Mangus, Michael D. “Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis.” 2012. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/9828.

MLA Handbook (7^th Edition):

Mangus, Michael D. “Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis.” 2012. Web. 05 Mar 2021.

Vancouver:

Mangus MD. Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/9828.

Council of Science Editors:

Mangus MD. Design, Construction, and Validation of an In-Cylinder Pressure Recording System for Internal Combustion Engine Analysis. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/9828

University of Kansas

2. Strecker, Bryan Anthony. Well-to-Wheel Energy, Emissions, and Cost Analysis of Electricity and Fuel Used in Conventional and Electrified Vehicles, and Their Connection to a Sustainable Energy Infrastructure.

Degree: MS, Mechanical Engineering, 2012, University of Kansas

URL: http://hdl.handle.net/1808/10771

► Recent legislation by the United States Environmental Protection Agency (EPA) requires record low vehicle tailpipe emissions, necessitating research and development in the areas of lowering… (more)

▼ Recent legislation by the United States Environmental Protection Agency (EPA) requires record low vehicle tailpipe emissions, necessitating research and development in the areas of lowering conventional (i.e., internal combustion engine) vehicle emissions rates while facilitating the widespread introduction of electrified vehicles. Currently, the EPA views Battery Electric Vehicles as having zero emissions. However, a number of studies illustrate this is not the case when considering the emissions produced in creating the electricity through a full Life Cycle Analysis. As a result, proper comparison of electrified and conventional vehicles must include a complete Well-to-Wheel (WtW) study including the emissions generated through production and use of liquid petroleum and biofuels. As a result, this work provides a full WtW investigation into fuel, electricity, and production analysis of conventional and electrified vehicles. This is supported by a thorough literature review of current and projected future technology, extrapolating to a fleet analysis, as well as applying the technology to an advanced electricity infrastructure. In the following effort, the first chapter simply provides a background into these different areas in order to help set the stage. Chapter 2 explores conventional vehicle emissions profiles predicting future requirements of engine and catalytic exhaust aftertreatment technologies. Findings illustrate that low temperature climates and aging both adversely affect a vehicle's ability to perform proper emissions reductions. This chapter additionally demonstrates an improvement in the fuel use emissions profiles of Argonne National Laboratories' Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model through the update of embedded time-sheet emissions lookup tables using EPA's Motor Vehicle Emissions Simulator (MOVES). This simulation package utilizes a statistical database of over 3000 counties in the continental United States in calculating the emissions profile of various vehicle and fuel type combinations, updating the current tables utilized in GREET. Chapter 3 utilizes these efforts in performing a life cycle analysis of a 1974 Volkswagen Super Beetle converted to a plug-in series hybrid. This work utilizes GREET in exploring the WtW fuel use emissions profile, as well as estimating the energy and emissions savings through reusing a number of stock vehicle components in the conversion. A vehicle dynamics model supports this analysis, calculating the average fuel use in a typical city/highway drive cycle. The fourth chapter expands upon this work, analyzing an 800+ vehicle fleet in a comparative analysis between electrified vehicles and their conventional counterparts. This work utilizes four simplified vehicle dynamics models, focusing on ten vehicles with various powertrains and fuel use algorithms. These models calculate the average fuel consumption of these vehicles, employing the GREET model in calculating the emissions profiles on a per-mile and yearly… Advisors/Committee Members: Depcik, Christopher (advisor), Depcik, Christopher (cmtemember), Dougherty, Ronald L. (cmtemember), Yimer, Bedru (cmtemember), Faddis, Terry (cmtemember).

Subjects/Keywords: Mechanical engineering

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APA (6^th Edition):

Strecker, B. A. (2012). Well-to-Wheel Energy, Emissions, and Cost Analysis of Electricity and Fuel Used in Conventional and Electrified Vehicles, and Their Connection to a Sustainable Energy Infrastructure. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/10771

Chicago Manual of Style (16^th Edition):

Strecker, Bryan Anthony. “Well-to-Wheel Energy, Emissions, and Cost Analysis of Electricity and Fuel Used in Conventional and Electrified Vehicles, and Their Connection to a Sustainable Energy Infrastructure.” 2012. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/10771.

MLA Handbook (7^th Edition):

Strecker, Bryan Anthony. “Well-to-Wheel Energy, Emissions, and Cost Analysis of Electricity and Fuel Used in Conventional and Electrified Vehicles, and Their Connection to a Sustainable Energy Infrastructure.” 2012. Web. 05 Mar 2021.

Vancouver:

Strecker BA. Well-to-Wheel Energy, Emissions, and Cost Analysis of Electricity and Fuel Used in Conventional and Electrified Vehicles, and Their Connection to a Sustainable Energy Infrastructure. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/10771.

Council of Science Editors:

Strecker BA. Well-to-Wheel Energy, Emissions, and Cost Analysis of Electricity and Fuel Used in Conventional and Electrified Vehicles, and Their Connection to a Sustainable Energy Infrastructure. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/10771

University of Kansas

3. Mohazabrad, Farhad. Experimental and Modeling Studies of Transport Limitations in Lithium‑O2 Battery.

Degree: MS, Mechanical Engineering, 2016, University of Kansas

URL: http://hdl.handle.net/1808/25353

► The Li‑O2 battery is one of the promising technologies to meet the ever-growing energy demand of the modern world. The theoretical energy density of Li‑O2… (more)

Subjects/Keywords: Energy; Mechanical engineering; Chemical engineering; Electrolyte evaporation; Li-O2 Battery; Mass transport; Open ratio; Oxygen electrode area; Salt concentration

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APA (6^th Edition):

Mohazabrad, F. (2016). Experimental and Modeling Studies of Transport Limitations in Lithium‑O2 Battery. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/25353

Chicago Manual of Style (16^th Edition):

Mohazabrad, Farhad. “Experimental and Modeling Studies of Transport Limitations in Lithium‑O2 Battery.” 2016. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/25353.

MLA Handbook (7^th Edition):

Mohazabrad, Farhad. “Experimental and Modeling Studies of Transport Limitations in Lithium‑O2 Battery.” 2016. Web. 05 Mar 2021.

Vancouver:

Mohazabrad F. Experimental and Modeling Studies of Transport Limitations in Lithium‑O2 Battery. [Internet] [Masters thesis]. University of Kansas; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/25353.

Council of Science Editors:

Mohazabrad F. Experimental and Modeling Studies of Transport Limitations in Lithium‑O2 Battery. [Masters Thesis]. University of Kansas; 2016. Available from: http://hdl.handle.net/1808/25353

University of Kansas

4. Srivatsa, Charu Vikram Chandrashekhar. Performance and Emissions Analysis of Pre-mixed and Partially Pre-mixed Charge Compression Ignition Combustion.

Degree: MS, Mechanical Engineering, 2017, University of Kansas

URL: http://hdl.handle.net/1808/24133

► Due to raising concerns of depleting petroleum reserves coupled with global warming, the interest in Compression Ignition (CI) engines is more than ever primarily due… (more)

Subjects/Keywords: Engineering; Energy; Mechanical engineering; Compression ratio; Environmental emissions; Internal combustion engine; Low temmperature combustion; Partially pre-mixed charge compression ignition combustion; Pre-mixed charge compression ignition combustion

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APA (6^th Edition):

Srivatsa, C. V. C. (2017). Performance and Emissions Analysis of Pre-mixed and Partially Pre-mixed Charge Compression Ignition Combustion. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/24133

Chicago Manual of Style (16^th Edition):

Srivatsa, Charu Vikram Chandrashekhar. “Performance and Emissions Analysis of Pre-mixed and Partially Pre-mixed Charge Compression Ignition Combustion.” 2017. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/24133.

MLA Handbook (7^th Edition):

Srivatsa, Charu Vikram Chandrashekhar. “Performance and Emissions Analysis of Pre-mixed and Partially Pre-mixed Charge Compression Ignition Combustion.” 2017. Web. 05 Mar 2021.

Vancouver:

Srivatsa CVC. Performance and Emissions Analysis of Pre-mixed and Partially Pre-mixed Charge Compression Ignition Combustion. [Internet] [Masters thesis]. University of Kansas; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/24133.

Council of Science Editors:

Srivatsa CVC. Performance and Emissions Analysis of Pre-mixed and Partially Pre-mixed Charge Compression Ignition Combustion. [Masters Thesis]. University of Kansas; 2017. Available from: http://hdl.handle.net/1808/24133

University of Kansas

5. Pinto, Darren Julian. Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines.

Degree: MS, Mechanical Engineering, 2019, University of Kansas

URL: http://hdl.handle.net/1808/30475

► The use of aviation fuels in compression ignition engines rose from the single forward fuel policy (SFFP) that mandated all vehicles at military bases be… (more)

Subjects/Keywords: Mechanical engineering; Transportation; Chemical engineering; Alternative Jet Fuels; Cetane Number; Coal to Liquid Fuel; Combustion Ignition Engine; JP-8; Single Fuel Forward Policy

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APA (6^th Edition):

Pinto, D. J. (2019). Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/30475

Chicago Manual of Style (16^th Edition):

Pinto, Darren Julian. “Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines.” 2019. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/30475.

MLA Handbook (7^th Edition):

Pinto, Darren Julian. “Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines.” 2019. Web. 05 Mar 2021.

Vancouver:

Pinto DJ. Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines. [Internet] [Masters thesis]. University of Kansas; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/30475.

Council of Science Editors:

Pinto DJ. Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines. [Masters Thesis]. University of Kansas; 2019. Available from: http://hdl.handle.net/1808/30475

University of Kansas

6. Choate, Matthew. Battery Management and Battery Modeling Considerations for Application in a Neighborhood Electric Vehicle.

Degree: MS, Mechanical Engineering, 2019, University of Kansas

URL: http://hdl.handle.net/1808/30487

► Transitioning from internal combustion engine vehicles (ICEVs) to electric vehicles (EVs) consolidates and relocates emissions, endeavoring to improve air quality, particularly in high traffic urban… (more)

▼ Transitioning from internal combustion engine vehicles (ICEVs) to electric vehicles (EVs) consolidates and relocates emissions, endeavoring to improve air quality, particularly in high traffic urban areas. Unfortunately, many obstacles to widespread EV use remain, broadly related to user familiarity, convenience, and effectiveness. However, EVs are better suited for some opportunities. Following the introduction, this thesis covers the process of upgrading a neighborhood electric vehicle (NEV) from lead-acid batteries to a swappable battery pack consisting of lithium iron phosphate (LiFePO4), or LFP, cells. Although LFP cells are considered safer than other lithium-ion cells, a new battery charger and battery management system (BMS) were installed to ensure proper function and maintenance. While the new electronics appeared to be successfully integrated during initial testing, several cells within the battery pack were over-discharged—or underwent voltage reversal—while outside during winter. Thus, prompted a reassessment of battery management practices and implementation, resulting in the construction of a new battery pack and redesign of the charge and discharge controls. The ensuing chapter pertains to battery management practices employed in the vehicle—and battery management in general. This chapter begins with background, wherein discusses fundamentals of cell function, modes of failure, and lastly, methods of obviating failure and protracting cell longevity. Finally, chapter four describes battery modeling from the perspective of a tool to maintain cells in EVs. Determination of immeasurable states that are important to battery management and consumer comfort are deliberated. Mathematical models and equivalent circuit models of cell behavior are of particular interest. Common equivalent circuit models are parameterized for several cells and voltage estimation capabilities are compared. Advisors/Committee Members: Depcik, Christopher (advisor), Fang, Huazhen (cmtemember), Liu, Lin (cmtemember).

Subjects/Keywords: Mechanical engineering; Engineering; Transportation; Battery Management; Battery Modeling; Electric Vehicle; Global Electric Motorcar; Lithium Iron Manganese Phosphate; Low-Speed Vehicle

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APA (6^th Edition):

Choate, M. (2019). Battery Management and Battery Modeling Considerations for Application in a Neighborhood Electric Vehicle. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/30487

Chicago Manual of Style (16^th Edition):

Choate, Matthew. “Battery Management and Battery Modeling Considerations for Application in a Neighborhood Electric Vehicle.” 2019. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/30487.

MLA Handbook (7^th Edition):

Choate, Matthew. “Battery Management and Battery Modeling Considerations for Application in a Neighborhood Electric Vehicle.” 2019. Web. 05 Mar 2021.

Vancouver:

Choate M. Battery Management and Battery Modeling Considerations for Application in a Neighborhood Electric Vehicle. [Internet] [Masters thesis]. University of Kansas; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/30487.

Council of Science Editors:

Choate M. Battery Management and Battery Modeling Considerations for Application in a Neighborhood Electric Vehicle. [Masters Thesis]. University of Kansas; 2019. Available from: http://hdl.handle.net/1808/30487

University of Kansas

7. Mattson, Jonathan Michael Stearns. Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics.

Degree: PhD, Mechanical Engineering, 2019, University of Kansas

URL: http://hdl.handle.net/1808/30479

► With the advent of modern engine control strategies, and particularly electronic common-rail injection, the scope and scale of what is achievable and controllable in compression-ignition… (more)

▼ With the advent of modern engine control strategies, and particularly electronic common-rail injection, the scope and scale of what is achievable and controllable in compression-ignition engines has exploded quite rapidly in recent years. The potential marriage of electronically-controlled and multi-point fuel injection, dual fuel combustion, variable exhaust gas recirculation, exhaust waste heat recovery, low-temperature combustion, and the immense variety of potential liquid and gaseous fuels available means that the older understanding of compression ignition engine combustion is incomplete and inadequate to explain, predict, control, and optimize more novel engine combustion and operational regimes. This mandates that new models, both diagnostic and theoretical, be developed to explore engine combustion and pick apart the various phenomena that result, and includes revisiting models that previously have been sidelined for a lack of usefulness. To that end, this work details the construction, validation, and usage of a diagnostic heat release model focused on the application of the 2nd Law of Thermodynamics and the phenomena associated with entropy generation and availability destruction from the accumulated test data of numerous fuels and engine operational modes. A critical aspect of this research includes the marriage of this model with a suite of emissions analysis technologies, allowing for a complete characterization of engine-out regulated and unregulated emissions species, as well as a thoroughly instrumented and highly modified single-cylinder compression-ignition engine. This combined test apparatus for novel fuels and engine operational modes, in combination with the models described herein, serve as a means to collect and dissect engine performance, in-cylinder pressure, engine knock and noise, emissions, heat release, and availability release and consumption, and the interrelationships between these characteristics The experimental results of this work showcase both the direct usage of the 2nd Law Analysis (both alongside and separate from the more traditional 1st Law Heat Release Analysis), and also the potential usage of this model for the exploration of engine operational modes. In particular, the 2nd Law analysis appears to be of immense importance to the exploration of low temperature combustion regimes, as well as the usage of exhaust waste heat recovery systems. Advisors/Committee Members: Depcik, Christopher D (advisor), Depcik, Christopher D (cmtemember), Liu, Lin (cmtemember), Li, Xianglin (cmtemember), Peltier, Edward F (cmtemember), Stagg-Williams, Susan M (cmtemember).

Subjects/Keywords: Thermodynamics; Automotive engineering; Diesel; Entropy; Exergy; Experimental; Renewable; Thermodynamics

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APA (6^th Edition):

Mattson, J. M. S. (2019). Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/30479

Chicago Manual of Style (16^th Edition):

Mattson, Jonathan Michael Stearns. “Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics.” 2019. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/30479.

MLA Handbook (7^th Edition):

Mattson, Jonathan Michael Stearns. “Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics.” 2019. Web. 05 Mar 2021.

Vancouver:

Mattson JMS. Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics. [Internet] [Doctoral dissertation]. University of Kansas; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/30479.

Council of Science Editors:

Mattson JMS. Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics. [Doctoral Dissertation]. University of Kansas; 2019. Available from: http://hdl.handle.net/1808/30479

University of Kansas

8. Cecrle, Eric Daniel. Controls and Measurements of KU Engine Test Cells for Biodiesel, SynGas, and Assisted Biodiesel Combustion.

Degree: MS, Mechanical Engineering, 2011, University of Kansas

URL: http://hdl.handle.net/1808/7658

► This thesis is comprised of three unique data acquisition and controls (CDAQ) projects. Each of these projects differs from each other; however, they all include… (more)

▼ This thesis is comprised of three unique data acquisition and controls (CDAQ) projects. Each of these projects differs from each other; however, they all include the concept of testing renewable or future fuel sources. The projects were the following: University of Kansas's Feedstock-to-Tailpipe Initiative's Synthesis Gas Reforming rig, Feedstock-to-Tailpipe Initiative's Biodiesel Single Cylinder Test Stand, and a unique Reformate Assisted Biodiesel Combustion architecture. The main responsibility of the author was to implement, develop and test CDAQ systems for the projects. For the Synthesis Gas Reforming rig, this thesis includes a report that summarizes the analysis and solution of building a controls and data acquisition system for this setup. It describes the purpose of the sensors selected along with their placement throughout the system. Moreover, it includes an explanation of the planned data collection system, along with two models describing the reforming process useful for system control. For the Biodiesel Single Cylinder Test Stand, the responsibility was to implement the CDAQ system for data collection. This project comprised a variety of different sensors that are being used collect the combustion characteristics of different biodiesel formulations. This project is currently being used by other graduates in order to complete their projects for subsequent publication. For the Reformate Assisted Biodiesel Combustion architecture, the author developed a reformate injection system to test different hydrogen and carbon monoxide mixtures as combustion augmentation. Hydrogen combustion has certain limiting factors, such as pre-ignition in spark ignition engines and inability to work as a singular fuel in compression ignition engines. To offset these issues, a dual-fuel methodology is utilized by injecting a hydrogen/carbon monoxide mixture into the intake stream of a diesel engine operating on biodiesel. While carbon monoxide does degrade some of the desirable properties of hydrogen, it acts partially like a diluent in order to prevent pre-ignition from occurring. The result of this mixture addition allows the engine to maintain power while reducing biodiesel fuel consumption with a minimal NOx emissions increase. Advisors/Committee Members: Depcik, Christopher (advisor), Dougherty, Ronald L. (cmtemember), Yimer, Bedru (cmtemember).

Subjects/Keywords: Mechanical engineering; Data acquisition; Engine; Test cells

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APA (6^th Edition):

Cecrle, E. D. (2011). Controls and Measurements of KU Engine Test Cells for Biodiesel, SynGas, and Assisted Biodiesel Combustion. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/7658

Chicago Manual of Style (16^th Edition):

Cecrle, Eric Daniel. “Controls and Measurements of KU Engine Test Cells for Biodiesel, SynGas, and Assisted Biodiesel Combustion.” 2011. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/7658.

MLA Handbook (7^th Edition):

Cecrle, Eric Daniel. “Controls and Measurements of KU Engine Test Cells for Biodiesel, SynGas, and Assisted Biodiesel Combustion.” 2011. Web. 05 Mar 2021.

Vancouver:

Cecrle ED. Controls and Measurements of KU Engine Test Cells for Biodiesel, SynGas, and Assisted Biodiesel Combustion. [Internet] [Masters thesis]. University of Kansas; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/7658.

Council of Science Editors:

Cecrle ED. Controls and Measurements of KU Engine Test Cells for Biodiesel, SynGas, and Assisted Biodiesel Combustion. [Masters Thesis]. University of Kansas; 2011. Available from: http://hdl.handle.net/1808/7658

University of Kansas

9. Srinivasan, Anand. ONE-DIMENSIONAL PSEUDO-HOMOGENEOUS PACKED BED REACTOR MODELING INCLUDING NO-CO KINETICS.

Degree: M.F.A., Mechanical Engineering, 2011, University of Kansas

URL: http://hdl.handle.net/1808/8185

► The air pollution generated from mobile sources creates a large impact on the environment and on people's health. In order to meet the stringent emission… (more)

Subjects/Keywords: Mechanical engineering; Automotive engineering; Diffusion models; Global; Detailed rate mechanisms; No-co kinetics; Packed bed modeling; Rhodium platinum catalysts; Thermal conductivity models

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APA (6^th Edition):

Srinivasan, A. (2011). ONE-DIMENSIONAL PSEUDO-HOMOGENEOUS PACKED BED REACTOR MODELING INCLUDING NO-CO KINETICS. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/8185

Chicago Manual of Style (16^th Edition):

Srinivasan, Anand. “ONE-DIMENSIONAL PSEUDO-HOMOGENEOUS PACKED BED REACTOR MODELING INCLUDING NO-CO KINETICS.” 2011. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/8185.

MLA Handbook (7^th Edition):

Srinivasan, Anand. “ONE-DIMENSIONAL PSEUDO-HOMOGENEOUS PACKED BED REACTOR MODELING INCLUDING NO-CO KINETICS.” 2011. Web. 05 Mar 2021.

Vancouver:

Srinivasan A. ONE-DIMENSIONAL PSEUDO-HOMOGENEOUS PACKED BED REACTOR MODELING INCLUDING NO-CO KINETICS. [Internet] [Masters thesis]. University of Kansas; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/8185.

Council of Science Editors:

Srinivasan A. ONE-DIMENSIONAL PSEUDO-HOMOGENEOUS PACKED BED REACTOR MODELING INCLUDING NO-CO KINETICS. [Masters Thesis]. University of Kansas; 2011. Available from: http://hdl.handle.net/1808/8185

University of Kansas

10. Varre, Mathew Sunil. IN VIVO CONTACT MECHANICS OF THE DISTAL RADIOULNAR JOINT WITH AND WITHOUT SCAPHOLUNATE DISSOCIATION.

Degree: MS, Mechanical Engineering, 2011, University of Kansas

URL: http://hdl.handle.net/1808/8380

► The distal radioulnar joint (DRUJ) is a joint of the wrist which allows force transmission and forearm rotation in the upper limb while preserving the… (more)

▼ The distal radioulnar joint (DRUJ) is a joint of the wrist which allows force transmission and forearm rotation in the upper limb while preserving the stability of the forearm independent of elbow and wrist flexion and extension. DRUJ is a commonly injured part of the body. Conditions affecting the joint could be positive ulnar variance or negative ulnar variance, the length of the ulna relative to radius. It is also adversely affected by nearby injuries such as distal radial fractures. In fact, a significant correlation was found between negative ulnar variance and scapholunate dissociation (SLD), a ligament injury of the wrist. This leads to the question of whether or not SLD causes changes in the radioulnar joint mechanics. Altered joint mechanics are associated with the onset of osteoarthritis (OA). An understanding of the of the normal and pathological wrist in vivo DRUJ contact mechanics should help physicians make better clinical recommendations and improve treatment for the primary injury. Proper treatment of the DRUJ could help prevent the onset of OA. Image registration is used in our modeling to determine the kinematic transformations for carpal bones from the unloaded to the loaded configuration. A perturbation study was done to evaluate the effect of varying initial manual registrations and the relative image plane orientations on the final registration kinematics. The results of the study showed that Subject II (with different imaging plane orientations) was found to have greater translation errors compared to subject I (consistent imaging planes). This result emphasizes the need to be consistent with forearm position and/or image plane orientation to minimize the errors of translation and attitude vectors. In a separate study, five additional subjects with unilateral SLD participated in another study in which MRI based contact modeling was used to analyze the contact mechanics parameters of the injured wrist compared to the normal wrist. The contact forces, peak contact pressures, average pressures and contact areas generally trended to be higher in injured wrists compared to the normal and surgically repaired wrists. Model contact areas were found to be consistent with the directly measured areas from the grasp MR images. A repeatability test was done on a single subject and the absolute differences between the contact parameters for both the trials were close. These findings suggest that SLD injury of the wrist may have an effect on the DRUJ mechanics. Advisors/Committee Members: Fischer, Kenneth J (advisor), Depcik, Christopher (cmtemember), Yang, Xinmai (cmtemember).

Subjects/Keywords: Mechanical engineering; Biomechanics; Distal radioulnar joint; Ini vivo contact mechanics; Mri based contact modeling; Wrist mechanics

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APA (6^th Edition):

Varre, M. S. (2011). IN VIVO CONTACT MECHANICS OF THE DISTAL RADIOULNAR JOINT WITH AND WITHOUT SCAPHOLUNATE DISSOCIATION. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/8380

Chicago Manual of Style (16^th Edition):

Varre, Mathew Sunil. “IN VIVO CONTACT MECHANICS OF THE DISTAL RADIOULNAR JOINT WITH AND WITHOUT SCAPHOLUNATE DISSOCIATION.” 2011. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/8380.

MLA Handbook (7^th Edition):

Varre, Mathew Sunil. “IN VIVO CONTACT MECHANICS OF THE DISTAL RADIOULNAR JOINT WITH AND WITHOUT SCAPHOLUNATE DISSOCIATION.” 2011. Web. 05 Mar 2021.

Vancouver:

Varre MS. IN VIVO CONTACT MECHANICS OF THE DISTAL RADIOULNAR JOINT WITH AND WITHOUT SCAPHOLUNATE DISSOCIATION. [Internet] [Masters thesis]. University of Kansas; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/8380.

Council of Science Editors:

Varre MS. IN VIVO CONTACT MECHANICS OF THE DISTAL RADIOULNAR JOINT WITH AND WITHOUT SCAPHOLUNATE DISSOCIATION. [Masters Thesis]. University of Kansas; 2011. Available from: http://hdl.handle.net/1808/8380

University of Kansas

11. Loya, Sudarshan K. Dynamic Incompressible Navier-Stokes Model of Catalytic Converter in 1-D Including Fundamental Oxidation Reaction Rate Expressions.

Degree: M.F.A., Mechanical Engineering, 2011, University of Kansas

URL: http://hdl.handle.net/1808/9779

► Classical one-dimensional (1D) models of automotive catalysts are effective in designing catalyst systems that meet current emission standards. These models use various assumptions in order… (more)

Subjects/Keywords: Mechanical engineering; Catalytic converter modeling; Diffusion and conduction; Incompressible navier stokes; Low velocity modeling; Reaction rate expression

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APA (6^th Edition):

Loya, S. K. (2011). Dynamic Incompressible Navier-Stokes Model of Catalytic Converter in 1-D Including Fundamental Oxidation Reaction Rate Expressions. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/9779

Chicago Manual of Style (16^th Edition):

Loya, Sudarshan K. “Dynamic Incompressible Navier-Stokes Model of Catalytic Converter in 1-D Including Fundamental Oxidation Reaction Rate Expressions.” 2011. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/9779.

MLA Handbook (7^th Edition):

Loya, Sudarshan K. “Dynamic Incompressible Navier-Stokes Model of Catalytic Converter in 1-D Including Fundamental Oxidation Reaction Rate Expressions.” 2011. Web. 05 Mar 2021.

Vancouver:

Loya SK. Dynamic Incompressible Navier-Stokes Model of Catalytic Converter in 1-D Including Fundamental Oxidation Reaction Rate Expressions. [Internet] [Masters thesis]. University of Kansas; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/9779.

Council of Science Editors:

Loya SK. Dynamic Incompressible Navier-Stokes Model of Catalytic Converter in 1-D Including Fundamental Oxidation Reaction Rate Expressions. [Masters Thesis]. University of Kansas; 2011. Available from: http://hdl.handle.net/1808/9779

University of Kansas

12. Moradi, Mohammadmoein. Mathematical Modeling of Lithium-ion Batteries and Improving Mathematics Learning Experience for Engineering Students.

Degree: MS, Mechanical Engineering, 2018, University of Kansas

URL: http://hdl.handle.net/1808/27598

► Increase in the world’s energy consumption along with the environmental impacts of conventional sources of energy (gas, petroleum, and coal) makes the shift to clean… (more)

▼ Increase in the world’s energy consumption along with the environmental impacts of conventional sources of energy (gas, petroleum, and coal) makes the shift to clean energy sources unavoidable. To address the energy needs of the world, using clean energy sources would not provide the sufficient answer to the world’s energy issues if it is not accompanied by developing energy storage systems that are capable of storing energy efficiently. Lithium-ion batteries are the main energy storage devices that are developed to satisfy the ever-growing energy needs of the modern world. However, there are still important features of Li-ion battery systems (such as the battery microstructural effects) that need to be studied to a broader extent. In this regard, some of the battery microstructural phenomena, such as the formation of solid electrolyte interface, is believed to be the main reason behind battery degradation and drop in performance. Previous studies have focused on the experimental and computational investigation of micro- and macro- structural features of the Li-ion battery; however, further study is needed to focus on incorporating the effects of microscale features of the Li-ion batteries into the total response of the battery system. In the present work, the details of developing a multiscale mathematical model for a Li-ion battery system is explained, and a multiscale model for the battery system is developed by employing variational multiscale modeling method. The developed model is capable of considering the effects of the battery microstructural features (e.g., the random shape of the active material particles) on the total battery performance. In the developed multiscale framework, the microstructural effects are accounted for in the governing equations of the battery macroscale with the help of Green’s function and variational formulation. This part of the present work provides a clear framework for understanding the details and process of developing a multiscale mathematical model for a Li-ion battery system. Learning mathematics is essential in engineering education and practice. With increasing number of students and emergence of online/distance learning programs, it is critical to look for new approaches in teaching mathematics that different in content development and design. Special consideration should be in place in designing an online program for teaching mathematics to ensure students’ success and satisfaction in the engineering curriculum. Previous investigations studied the effects of enrolling in online programs on students’ achievement. However, more implementations of such educational frameworks are needed to recognize their shortcomings and enhance the quality of online learning programs. In addition, the idea of the blended classroom should be put into practice to a further extent to ensure the high-quality development of online instructional content. In this work, an online learning program was provided for engineering students enrolled in an introductory engineering mechanics course. Online… Advisors/Committee Members: Liu, Lin (advisor), Luchies, Carl W. (cmtemember), Depcik, Christopher (cmtemember).

Subjects/Keywords: Mechanical engineering; Mathematics; Energy; Energy Storage Systems; Engineering Education; Finite Element Analysis; Lithium-ion Batteries; Mathematical Modeling; Multiscale Modeling

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APA (6^th Edition):

Moradi, M. (2018). Mathematical Modeling of Lithium-ion Batteries and Improving Mathematics Learning Experience for Engineering Students. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/27598

Chicago Manual of Style (16^th Edition):

Moradi, Mohammadmoein. “Mathematical Modeling of Lithium-ion Batteries and Improving Mathematics Learning Experience for Engineering Students.” 2018. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/27598.

MLA Handbook (7^th Edition):

Moradi, Mohammadmoein. “Mathematical Modeling of Lithium-ion Batteries and Improving Mathematics Learning Experience for Engineering Students.” 2018. Web. 05 Mar 2021.

Vancouver:

Moradi M. Mathematical Modeling of Lithium-ion Batteries and Improving Mathematics Learning Experience for Engineering Students. [Internet] [Masters thesis]. University of Kansas; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/27598.

Council of Science Editors:

Moradi M. Mathematical Modeling of Lithium-ion Batteries and Improving Mathematics Learning Experience for Engineering Students. [Masters Thesis]. University of Kansas; 2018. Available from: http://hdl.handle.net/1808/27598

University of Kansas

13. Churkunti, Preetham Reddy. Combustion Performance of Waste-Derived Fuels with respect to Ultra-Low Sulfur Diesel in a Compression Ignition Engine.

Degree: MS, Mechanical Engineering, 2015, University of Kansas

URL: http://hdl.handle.net/1808/19403

► The ever increasing energy demand along with fast depleting non-renewable fossil fuels and global climate change has led to a search for sustainable energy resources.… (more)

▼ The ever increasing energy demand along with fast depleting non-renewable fossil fuels and global climate change has led to a search for sustainable energy resources. Fuels produced from waste, like plastic solid waste and waste cooking oil, have gained significant interest since they not only solve disposal problems but also provide a sustainable energy resource. This thesis contains detailed literature surveys, combustion analysis of a waste plastic fuel, life cycle analysis of waste plastic fuel and waste cooking oil biodiesel from well to exhaust, and optimization of combustion of waste cooking oil biodiesel by employing higher injection pressures and normalized injection timings in comparison to commercial ultra low sulfur diesel fuel (ULSD). Chapter 1 introduces the research work with the motivation behind the efforts. In addition, there is a brief discussion on prior and parallel work performed in the employed engine test cell. Moreover, this chapter describes the focus of each chapter with novel and unique findings highlighted. Chapter 2 describes a literature review to better understand the influence of fuel synthesis technique on fuel properties of waste plastic fuels. Moreover, this chapter contains a combustion analysis of waste plastic fuel blends with ULSD in order to compare performance and emission characteristics of a commercial waste plastic fuel with that of ULSD. Chapter 3 starts with a literature review to give background on the life cycle analysis and different approaches taken by previous researchers to perform life cycle analysis. This is followed by a well-to-exhaust analysis (WtE) of waste cooking oil biodiesel and waste plastic fuel at full load in comparison to ULSD. Chapter 4 details the literature review to understand general and specific findings on the influence of injection parameters on the performance and emission characteristics of compression ignition fuels. This chapter contains a detailed combustion analysis of waste cooking oil biodiesel at higher injection pressures and normalized injection timings to attempt to replicate the performance of ULSD by negating the relatively high viscosity of the test fuel. Chapter 5 summarizes major findings of this work in stages and connects the outcome of efforts to achieve optimal combustion of waste-derived fuels. Furthermore, future efforts are suggested to move towards sustainable public transportation in and around the University of Kansas campus. Advisors/Committee Members: Depcik, Christopher (advisor), Kieweg, Sarah L (cmtemember), Peltier, Edward (cmtemember).

Subjects/Keywords: Engineering; Energy; Sustainability; Combustion; GREET; Life Cycle Analysis; Optimization; Waste Plastic Fuels; WCO Biodiesel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Churkunti, P. R. (2015). Combustion Performance of Waste-Derived Fuels with respect to Ultra-Low Sulfur Diesel in a Compression Ignition Engine. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/19403

Chicago Manual of Style (16^th Edition):

Churkunti, Preetham Reddy. “Combustion Performance of Waste-Derived Fuels with respect to Ultra-Low Sulfur Diesel in a Compression Ignition Engine.” 2015. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/19403.

MLA Handbook (7^th Edition):

Churkunti, Preetham Reddy. “Combustion Performance of Waste-Derived Fuels with respect to Ultra-Low Sulfur Diesel in a Compression Ignition Engine.” 2015. Web. 05 Mar 2021.

Vancouver:

Churkunti PR. Combustion Performance of Waste-Derived Fuels with respect to Ultra-Low Sulfur Diesel in a Compression Ignition Engine. [Internet] [Masters thesis]. University of Kansas; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/19403.

Council of Science Editors:

Churkunti PR. Combustion Performance of Waste-Derived Fuels with respect to Ultra-Low Sulfur Diesel in a Compression Ignition Engine. [Masters Thesis]. University of Kansas; 2015. Available from: http://hdl.handle.net/1808/19403

University of Kansas

14. Silvey, Luke. Hydrogen and Syngas Production from Biodiesel Derived Crude Glycerol.

Degree: MS, Chemical & Petroleum Engineering, 2012, University of Kansas

URL: http://hdl.handle.net/1808/9697

► In the past decade, the production of biodiesel has increased dramatically. One of the major by-products of biodiesel production is crude glycerol, which is expensive… (more)

▼ In the past decade, the production of biodiesel has increased dramatically. One of the major by-products of biodiesel production is crude glycerol, which is expensive to refine. As a result, the price of crude glycerol has plummeted to the point where biodiesel companies have to pay to dispose of it. This leads to an increased cost of biodiesel production. To make biodiesel production more cost-effective, it is vital that a use for this crude glycerol is found. One possible method is using steam reforming techniques to reform crude glycerol to produce hydrogen or synthesis gas. This gas can be converted to jet or diesel fuel by using Fischer-Tropsch principles or used in traditional hydrogen applications. In this study, the viability of using steam reforming techniques to convert crude glycerol into a hydrogen rich gas is addressed. To do this, the effects of the impurities in crude glycerol on catalyst life and activity were compared to pure glycerol reforming over two different steam reforming catalysts: Ni/MgO and Ni/γ-Al2O3 catalysts. Reactions over both catalysts showed that crude glycerol reforming can produce a product gas similar to the gas produced during pure glycerol reforming. Unfortunately, the impurities found in the crude glycerol limited catalyst life over time. They increase coke and tar formation and cause the reactor to plug after several hours. To solve this problem, a simple pre-wash of crude glycerol using acetic acid was performed. The acid-wash removed many of the impurities in the glycerol. Acid-washed glycerol reforming showed dramatic improvements over crude glycerol reforming. The reactions showed increased catalytic activity and little deactivation for 12 to 14 hours. Conversion of reactants to products was ~100% and the product gas had a hydrogen purity of 68-69%. Thermodynamic equilibrium predictions matched those provided by the experimental results. The role of the different impurities found in crude glycerol was considered. Experimental and thermodynamic results show that the presence of methanol can aid in producing a product gas with a high hydrogen purity but can decrease hydrogen yield. Results indicate that the presence of potassium aids in gasification of the reactant and help prevent carbon formation on the catalyst. The soaps and unreacted triglycerides found in crude glycerol increase coke and tar formation in the reactor and will eventually cause plugging. Future work needs to be performed to fully determine the role of these impurities in crude glycerol reforming. Advisors/Committee Members: Williams, Susan M (advisor), Scurto, Aaron M (cmtemember), Depcik, Christopher (cmtemember).

Subjects/Keywords: Chemical engineering; Biodiesel; Crude glycerol; Hydrogen; Nickel; Steam reforming; Syngas

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Silvey, L. (2012). Hydrogen and Syngas Production from Biodiesel Derived Crude Glycerol. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/9697

Chicago Manual of Style (16^th Edition):

Silvey, Luke. “Hydrogen and Syngas Production from Biodiesel Derived Crude Glycerol.” 2012. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/9697.

MLA Handbook (7^th Edition):

Silvey, Luke. “Hydrogen and Syngas Production from Biodiesel Derived Crude Glycerol.” 2012. Web. 05 Mar 2021.

Vancouver:

Silvey L. Hydrogen and Syngas Production from Biodiesel Derived Crude Glycerol. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/9697.

Council of Science Editors:

Silvey L. Hydrogen and Syngas Production from Biodiesel Derived Crude Glycerol. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/9697

University of Kansas

15. Spickler, Bailey Ann. Waste Heat Recovery From a Compression Ignition Engine using a Combined Diesel Particulate Filter Heat Exchanger.

Degree: MS, Mechanical Engineering, 2019, University of Kansas

URL: http://hdl.handle.net/1808/29693

► Compression ignition (CI) engines have been a figurehead in the transportation industry for decades. However, as environmental regulations dictate increasingly strict emissions guidelines for engines,… (more)

Subjects/Keywords: Thermodynamics; Mechanical engineering; Energy; compression ignition engine; diesel particulate filter; heat exchanger; waste heat recovery; working fluid selection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Spickler, B. A. (2019). Waste Heat Recovery From a Compression Ignition Engine using a Combined Diesel Particulate Filter Heat Exchanger. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/29693

Chicago Manual of Style (16^th Edition):

Spickler, Bailey Ann. “Waste Heat Recovery From a Compression Ignition Engine using a Combined Diesel Particulate Filter Heat Exchanger.” 2019. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/29693.

MLA Handbook (7^th Edition):

Spickler, Bailey Ann. “Waste Heat Recovery From a Compression Ignition Engine using a Combined Diesel Particulate Filter Heat Exchanger.” 2019. Web. 05 Mar 2021.

Vancouver:

Spickler BA. Waste Heat Recovery From a Compression Ignition Engine using a Combined Diesel Particulate Filter Heat Exchanger. [Internet] [Masters thesis]. University of Kansas; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/29693.

Council of Science Editors:

Spickler BA. Waste Heat Recovery From a Compression Ignition Engine using a Combined Diesel Particulate Filter Heat Exchanger. [Masters Thesis]. University of Kansas; 2019. Available from: http://hdl.handle.net/1808/29693

University of Kansas

16. Sprouse, Charles Edward, III. Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle.

Degree: PhD, Mechanical Engineering, 2016, University of Kansas

URL: http://hdl.handle.net/1808/21558

► Diesel Particulate Filters (DPFs) are currently being used to remove Particulate Matter (PM) from compression ignition engine exhaust streams with collection efficiencies approaching 100%. These… (more)

▼ Diesel Particulate Filters (DPFs) are currently being used to remove Particulate Matter (PM) from compression ignition engine exhaust streams with collection efficiencies approaching 100%. These devices capture soot by forcing the exhaust gases through porous walls, where entrapment of the particulates initially occurs. Eventually, a cake layer begins forming on the inlet channel walls, causing an increased pressure drop through the device and necessitating a soot combustion event to unload the filter. The exothermic nature of these regeneration events serve to enhance the thermal energy content of the exhaust, which already contains approximately one-third of the fuel energy being consumed by the engine. Typically, the energy from both sources is expelled to the atmosphere, destroying the ability to produce useful work from the exhaust heat. However, a novel device described here as a Diesel Particulate Filter/Heat Exchanger (DPFHX) may be coupled to an Organic Rankine Cycle (ORC) to simultaneously provide particulate matter filtration and waste heat recovery. The DPFHX concept is based on the shell-and-tube heat exchanger geometry and features enlarged tubes to contain DPF cores, allowing energy capture from the engine exhaust while preserving the standard technique of PM abatement. Since the working fluid circulating on the shell side collects heat from the exhaust, the DPFHX serves as the organic Rankine cycle’s evaporator. Along with the cycle’s pump, expander, and condenser, the DPFHX forms an ORC capable of transforming exhaust waste heat into supplementary power for the engine. Reducing exergy destruction in this manner meets the two main objectives of engine research; the reduction of fuel consumption and emissions. The degree to which the proposed DPFHX-ORC system achieves these goals is a focus of this dissertation, where the advancement of this technology occurs primarily through theoretical efforts. As precursors to the eventual DPFHX-ORC computer model, individual ORC and DPF models are created. With respect to simulating an ORC, a historical study of the ORC WHR literature informs the design choices associated with building an ORC model. Authors in this research area note that the two dominant factors influencing cycle performance are the working fluid and expander selections. Based on these findings, eight dry fluids (butane, pentane, hexane, cyclopentane, benzene, toluene, R245fa, and R123) compatible with reciprocating expanders are identified for use in an ORC model. By simulating WHR from a Yanmar L100V diesel engine, the component-based ORC constructed illustrates an approximate 10% improvement to the engine’s efficiency across all operating conditions and favors the use of pentane or cyclopentane as the cycle’s working fluid. These results are consistent with reported ORC outputs in the literature and demonstrate the ORC model’s value as a component of the DPFHX-ORC model. The second foundational component is a DPF model, which is developed using the DPF governing equations in area-conserved… Advisors/Committee Members: Depcik, Christopher D. (advisor), TenPas, Peter (cmtemember), Bergman, Theodore (cmtemember), Yang, Xinmai (cmtemember), Peltier, Edward (cmtemember).

Subjects/Keywords: Mechanical engineering; Diesel Particulate Filter; Organic Rankine Cycle; Waste Heat Recovery

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sprouse, Charles Edward, I. (2016). Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/21558

Chicago Manual of Style (16^th Edition):

Sprouse, Charles Edward, III. “Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle.” 2016. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/21558.

MLA Handbook (7^th Edition):

Sprouse, Charles Edward, III. “Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle.” 2016. Web. 05 Mar 2021.

Vancouver:

Sprouse, Charles Edward I. Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle. [Internet] [Doctoral dissertation]. University of Kansas; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/21558.

Council of Science Editors:

Sprouse, Charles Edward I. Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle. [Doctoral Dissertation]. University of Kansas; 2016. Available from: http://hdl.handle.net/1808/21558

University of Kansas

17. Sprouse, Charles Edward, III. Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle.

Degree: PhD, Mechanical Engineering, 2016, University of Kansas

URL: http://hdl.handle.net/1808/25771

► Diesel Particulate Filters (DPFs) are currently being used to remove Particulate Matter (PM) from compression ignition engine exhaust streams with collection efficiencies approaching 100%. These… (more)

▼ Diesel Particulate Filters (DPFs) are currently being used to remove Particulate Matter (PM) from compression ignition engine exhaust streams with collection efficiencies approaching 100%. These devices capture soot by forcing the exhaust gases through porous walls, where entrapment of the particulates initially occurs. Eventually, a cake layer begins forming on the inlet channel walls, causing an increased pressure drop through the device and necessitating a soot combustion event to unload the filter. The exothermic nature of these regeneration events serve to enhance the thermal energy content of the exhaust, which already contains approximately one-third of the fuel energy being consumed by the engine. Typically, the energy from both sources is expelled to the atmosphere, destroying the ability to produce useful work from the exhaust heat. However, a novel device described here as a Diesel Particulate Filter/Heat Exchanger (DPFHX) may be coupled to an Organic Rankine Cycle (ORC) to simultaneously provide particulate matter filtration and waste heat recovery. The DPFHX concept is based on the shell-and-tube heat exchanger geometry and features enlarged tubes to contain DPF cores, allowing energy capture from the engine exhaust while preserving the standard technique of PM abatement. Since the working fluid circulating on the shell side collects heat from the exhaust, the DPFHX serves as the organic Rankine cycle’s evaporator. Along with the cycle’s pump, expander, and condenser, the DPFHX forms an ORC capable of transforming exhaust waste heat into supplementary power for the engine. Reducing exergy destruction in this manner meets the two main objectives of engine research; the reduction of fuel consumption and emissions. The degree to which the proposed DPFHX-ORC system achieves these goals is a focus of this dissertation, where the advancement of this technology occurs primarily through theoretical efforts. As precursors to the eventual DPFHX-ORC computer model, individual ORC and DPF models are created. With respect to simulating an ORC, a historical study of the ORC WHR literature informs the design choices associated with building an ORC model. Authors in this research area note that the two dominant factors influencing cycle performance are the working fluid and expander selections. Based on these findings, eight dry fluids (butane, pentane, hexane, cyclopentane, benzene, toluene, R245fa, and R123) compatible with reciprocating expanders are identified for use in an ORC model. By simulating WHR from a Yanmar L100V diesel engine, the component-based ORC constructed illustrates an approximate 10% improvement to the engine’s efficiency across all operating conditions and favors the use of pentane or cyclopentane as the cycle’s working fluid. These results are consistent with reported ORC outputs in the literature and demonstrate the ORC model’s value as a component of the DPFHX-ORC model. The second foundational component is a DPF model, which is developed using the DPF governing equations in area-conserved… Advisors/Committee Members: Depcik, Christopher D. (advisor), TenPas, Peter (cmtemember), Bergman, Theodore (cmtemember), Yang, Xinmai (cmtemember), Peltier, Edward (cmtemember).

Subjects/Keywords: Mechanical engineering; Diesel Particulate Filter; Organic Rankine Cycle; Waste Heat Recovery

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sprouse, Charles Edward, I. (2016). Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/25771

Chicago Manual of Style (16^th Edition):

Sprouse, Charles Edward, III. “Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle.” 2016. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/25771.

MLA Handbook (7^th Edition):

Sprouse, Charles Edward, III. “Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle.” 2016. Web. 05 Mar 2021.

Vancouver:

Sprouse, Charles Edward I. Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle. [Internet] [Doctoral dissertation]. University of Kansas; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/25771.

Council of Science Editors:

Sprouse, Charles Edward I. Combined Diesel Particulate Filter/Heat Exchanger for Engine Exhaust Waste Heat Recovery with Organic Rankine Cycle. [Doctoral Dissertation]. University of Kansas; 2016. Available from: http://hdl.handle.net/1808/25771

University of Kansas

18. Bramlette, Richard. Development, Modeling, Simulation, and Testing of a Novel Propane-Fueled Brayton-Gluhareff Cycle Acoustically-Pressurized Ramjet Engine.

Degree: PhD, Mechanical Engineering, 2016, University of Kansas

URL: http://hdl.handle.net/1808/23515

► In the 1950s, Eugene Gluhareff built the first working “pressure jet” engine, a variation on the classical ramjet engine with a pressurized inlet system relying… (more)

▼ In the 1950s, Eugene Gluhareff built the first working “pressure jet” engine, a variation on the classical ramjet engine with a pressurized inlet system relying on sonic tuning which allowed operation at subsonic speeds. The engine was an unqualified success. Unfortunately, after decades of sales and research, Gluhareff passed away leaving behind no significant published studies of the engine or detailed analysis of its operation. The design was at serious risk of being lost to history. This dissertation is intended to address that risk by studying a novel subscale modification of Gluhareff’s original design operating on the same principles. Included is a background of related engine and how the pressure jet is distinct. The preliminary sizing of a pressure jet using closed-form expressions is then discussed followed by a review of propane oxidation modeling, how it integrates into the Computational Fluid Dynamics (CFD) solver, and the modeling of the pressure jet engine cycle with CFD. The simulation was matched to experimental data recorded on a purpose-built test stand recording chamber pressure, exhaust speed (via a Pitot/static system), temperatures, and thrust force. The engine CFD simulation produced a wide range of qualitative results that matched the experimental data well and suggested strong recirculation flows through the engine confirming suspicions about how the engine operates. Engine operating frequency between CFD and experiment also showed good agreement and appeared to be driven by the “Kadenacy Effect.” The research effort lastly opens the door for further study of the engine cycle, the use of pressurized intakes to produce static thrust in a ramjet engine, the Gluhareff pressure jet’s original geometry, and a wide array of potential applications. A roadmap of further study and applications is detailed including a modeling and testing of larger engines. Advisors/Committee Members: Depcik, Christopher (advisor), Tenpas, Peter (cmtemember), Li, Xianglin (cmtemember), Taghavi, Ray (cmtemember), Farokhi, Saeed (cmtemember).

Subjects/Keywords: Aerospace engineering; Mechanical engineering; Chemistry; Chemical Kinetics; Computational Fluid Dynamics; Jet Propulsion; Pressure Jet; Propane Oxidation; Ramjet

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bramlette, R. (2016). Development, Modeling, Simulation, and Testing of a Novel Propane-Fueled Brayton-Gluhareff Cycle Acoustically-Pressurized Ramjet Engine. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/23515

Chicago Manual of Style (16^th Edition):

Bramlette, Richard. “Development, Modeling, Simulation, and Testing of a Novel Propane-Fueled Brayton-Gluhareff Cycle Acoustically-Pressurized Ramjet Engine.” 2016. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/23515.

MLA Handbook (7^th Edition):

Bramlette, Richard. “Development, Modeling, Simulation, and Testing of a Novel Propane-Fueled Brayton-Gluhareff Cycle Acoustically-Pressurized Ramjet Engine.” 2016. Web. 05 Mar 2021.

Vancouver:

Bramlette R. Development, Modeling, Simulation, and Testing of a Novel Propane-Fueled Brayton-Gluhareff Cycle Acoustically-Pressurized Ramjet Engine. [Internet] [Doctoral dissertation]. University of Kansas; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/23515.

Council of Science Editors:

Bramlette R. Development, Modeling, Simulation, and Testing of a Novel Propane-Fueled Brayton-Gluhareff Cycle Acoustically-Pressurized Ramjet Engine. [Doctoral Dissertation]. University of Kansas; 2016. Available from: http://hdl.handle.net/1808/23515

19. Stark, John. Analytical, numerical, and experimental characterization of air cooled cylindrical heat pipes under forced convection for various extended surfaces.

Degree: PhD, Mechanical Engineering, 2017, University of Kansas

URL: http://hdl.handle.net/1808/25929

► The objective of this dissertation is the characterization of heat transfer from cylindrical heat pipes (HPs) in cross flow with attached extended surfaces. The extended… (more)

▼ The objective of this dissertation is the characterization of heat transfer from cylindrical heat pipes (HPs) in cross flow with attached extended surfaces. The extended surfaces investigated include uniform thickness fins, open-cell highly porous metal foam, and an array consisting of periodic layers of metal fins and open-cell metal foam. First, benchmark direct numerical simulations are used to compare existing analytical models for predicting convection heat transfer coefficients associated with a finned HP. The benchmark simulations are also used to identify the shear stress transport (SST) turbulence model as the preferred numerical model for the prediction the convection heat transfer from a finned HP. The SST external model is then employed in conjunction with a multiphase 2D internal HP model by coupling these internal and external models. Predictions from the resulting coupled numerical model are compared with experimental measurements for validation. A previously unreported phenomenon, localized depression of temperatures in the heat pipe wall is identified. A novel analytical model of annular foam-only arrays is subsequently developed, along with a generalized expression for the fin efficiency of square arrays based upon corresponding annular efficiencies. Numerically predicted thermal efficiencies compare favorably with the predictions from the novel expressions for both the annular and square arrays. Comparison of experimentally measured heat rates and predicted heat rates found with the new expressions for a square metal foam array provides further validation. Finally, novel expressions for the thermal resistance associated with annular composite fin-foam arrays are developed. Experimentally measured heat rates for such an array are compared to corresponding predictions generated with the new expressions to verify the model. A preliminary comparison of predicted heat transfer for the annular fin array, the foam-only annular array, and the new combined fin-foam array is generated, demonstrating the improved thermal performance associated with the metal foam-based configurations. Advisors/Committee Members: Bergman, Theodore L (advisor), Wang, ZJ (cmtemember), Depcik, Christopher (cmtemember), Li, Xianglin (cmtemember), Fang, Hauzhen (cmtemember).

Subjects/Keywords: Mechanical engineering

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APA (6^th Edition):

Stark, J. (2017). Analytical, numerical, and experimental characterization of air cooled cylindrical heat pipes under forced convection for various extended surfaces. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/25929

Chicago Manual of Style (16^th Edition):

Stark, John. “Analytical, numerical, and experimental characterization of air cooled cylindrical heat pipes under forced convection for various extended surfaces.” 2017. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/25929.

MLA Handbook (7^th Edition):

Stark, John. “Analytical, numerical, and experimental characterization of air cooled cylindrical heat pipes under forced convection for various extended surfaces.” 2017. Web. 05 Mar 2021.

Vancouver:

Stark J. Analytical, numerical, and experimental characterization of air cooled cylindrical heat pipes under forced convection for various extended surfaces. [Internet] [Doctoral dissertation]. University of Kansas; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/25929.

Council of Science Editors:

Stark J. Analytical, numerical, and experimental characterization of air cooled cylindrical heat pipes under forced convection for various extended surfaces. [Doctoral Dissertation]. University of Kansas; 2017. Available from: http://hdl.handle.net/1808/25929

University of Kansas

20. Wang, Fangzhou. Experimental and Numerical Investigations of Wettability of Positive Electrodes for Li−O2 Batteries.

Degree: D.Eng., Mechanical Engineering, 2019, University of Kansas

URL: http://hdl.handle.net/1808/29696

► The objective of this dissertation is to characterize the positive electrode wettability and its effects on the performance (e.g., discharge capacity) of Li−O2 batteries. The… (more)

▼ The objective of this dissertation is to characterize the positive electrode wettability and its effects on the performance (e.g., discharge capacity) of Li−O2 batteries. The investigations include an experimental study of discharging electrodes with various wettabilities, proposing and examining the intermittent discharge strategy, and the numerical simulation of the distribution of the electrolyte at various saturations and of the discharge performance of Li−O2 batteries at the pore scale. Future work will measure the structure of positive electrodes using advanced imaging technology such as transmission X-ray microscopy. First, I fabricated the electrodes and adjusted their wettability by mixing acetylene black carbon particles with various binders. The wettability was quantitatively characterized by the contact angle and ionic resistance. The customized electrodes were then discharged in Li−O2 batteries at 0.1 mA/cm2 through which the relationship between electrode wettability and discharge capacity was obtained. The discharge capacity of the electrode with 15% PVDF (36.5°) binder was 1665.8 mAh/g while the customized electrode with 15% PTFE (128.4°) binder had a discharge capacity of 4160.8 mAh/g. The effects of lyophobicity on O2 transfer in the porous electrode have been proved. A positive electrode with mixed wettability was designed and tested, which acquired the highest specific discharge capacity of 5149.5 mAh/g. The structure of this electrode included two lyophobic carbon coatings on top and bottom and one lyophilic carbon coating in the middle. Further design may focus on appropriately configuring the wettability to balance the gas paths for O2 diffusion and wetted area for reaction sites. A novel strategy for discharging Li−O2 batteries was then proposed and identified. The battery was periodically discharged and rested, which can enhance O2 availability and increase the discharge capacity. Periodically resting the battery increased the specific discharge capacity by at least 50% at various current densities (0.1 - 1.5 mA/cm2). Afterward, the investigation combined the electrode wettability and the intermittent strategy. Compared with the continuous strategy, the capacity of lyophobic electrodes increased by over 100% when the intermittent strategy was applied. Besides, a multi-step discharge strategy can provide greater capacity when the battery is discharged at decreasing current rates (2.0, 1.5, and 1.0 mA/cm2). The importance of O2 diffusion is emphasized and provide practical strategies are proposed to improve the deep discharge capacity of Li-O2 batteries, especially at high current rates (> 1.0 mA/cm2). Finally, a numerical study was conducted to investigate the electrode with different saturations of the electrolyte. The effects of electrolyte saturation levels and the distribution of electrolyte have been demonstrated by comparing the corresponding discharge performance of Li-O2 batteries. It was found that fully saturated electrodes (100% saturation) have high oxygen transfer resistance,… Advisors/Committee Members: Li, Xianglin (advisor), Liu, Lin (cmtemember), Dougherty, Ronald L. (cmtemember), Depcik, Christopher (cmtemember), Nguyen, Trung Van (cmtemember).

Subjects/Keywords: Mechanical engineering

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APA (6^th Edition):

Wang, F. (2019). Experimental and Numerical Investigations of Wettability of Positive Electrodes for Li−O2 Batteries. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/29696

Chicago Manual of Style (16^th Edition):

Wang, Fangzhou. “Experimental and Numerical Investigations of Wettability of Positive Electrodes for Li−O2 Batteries.” 2019. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/29696.

MLA Handbook (7^th Edition):

Wang, Fangzhou. “Experimental and Numerical Investigations of Wettability of Positive Electrodes for Li−O2 Batteries.” 2019. Web. 05 Mar 2021.

Vancouver:

Wang F. Experimental and Numerical Investigations of Wettability of Positive Electrodes for Li−O2 Batteries. [Internet] [Doctoral dissertation]. University of Kansas; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/29696.

Council of Science Editors:

Wang F. Experimental and Numerical Investigations of Wettability of Positive Electrodes for Li−O2 Batteries. [Doctoral Dissertation]. University of Kansas; 2019. Available from: http://hdl.handle.net/1808/29696

University of Kansas

21. Wentworth, Travis. Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials.

Degree: D.Eng., Chemical & Petroleum Engineering, 2015, University of Kansas

URL: http://hdl.handle.net/1808/19398

► The reduction in emissions from mobile and stationary sources has become a global priority. With the impacts of global warming already being felt, all avenues… (more)

▼ The reduction in emissions from mobile and stationary sources has become a global priority. With the impacts of global warming already being felt, all avenues for reduction in greenhouse gas emissions are being investigated. Proposed miles per gallon standards of 54.5 MPG by 2025 have made increased engine efficiency a priority for all auto manufacturers. Lean-burn diesel engines are one potential strategy to reach the MPG targets, however current automotive catalysts struggle to reduce NO¬x emission in the oxidative environments of lean-burn diesel engines. Lean NOx trap (LNT) catalysis is an ideal approach to reducing NO¬x in oxidative environments. LNT catalysts are similar to traditional three-way catalysts in that they are inserted directly into engine exhausts and require no additional reductant systems. These catalysts can be improved by investigation into the specific catalytic components. Platinum serves to oxidize NO, facilitates NOx storage, and reduce NOx. Barium stores NOx during lean phase operation, and common additives such as cerium improve tolerance to chemical thermal and physical degradation. As catalysts formulations are changed it is extremely important to understand how these catalysts will perform over the lifetime of operation. The following work has taken a systematic approach to investigating aging characteristics of LNT catalysts, from simplistic noble metal alumina supported materials, to novel platinum free ceramic catalysts. A global kinetic model has been developed, and through the implementation of adaptive kinetic parameters, degradation of NO oxidation has been accurately modeled with changes in noble metal morphology. Investigations into aging of Pt/Ba/Al2O3 and Pt/Ba/Ce/Al2O3 have shown that NO oxidation profiles change substantially with thermal aging and that both the oxidation state and particle size of Pt affects conversion. Investigation of NOx storage over Pt/Ba/Ce/Al2O3 after thermal aging have shown that thermal aging induces formation of BaAl2O4 at aging temperatures as low as 600ºC and small amounts of BaAl2O4 can promote storage. Finally, a Pt-free LaSrCoO3¬ catalyst has been shown to both oxidize and store NOx but was unable to perform NOx reduction. The work lays the foundation for investigations of non-platinic perovskites catalysts which represent the next generation of LNT catalysts. Advisors/Committee Members: Stagg-Williams, Susan M (advisor), Depcik, Christopher (cmtemember), Leonard, Kevin (cmtemember), Nordheden, Karen (cmtemember), Camarda, Kyle (cmtemember).

Subjects/Keywords: Chemical engineering; Mechanical engineering; Degradation; LNT; NO Oxidation; Perovskite

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APA (6^th Edition):

Wentworth, T. (2015). Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/19398

Chicago Manual of Style (16^th Edition):

Wentworth, Travis. “Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials.” 2015. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/19398.

MLA Handbook (7^th Edition):

Wentworth, Travis. “Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials.” 2015. Web. 05 Mar 2021.

Vancouver:

Wentworth T. Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials. [Internet] [Doctoral dissertation]. University of Kansas; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/19398.

Council of Science Editors:

Wentworth T. Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials. [Doctoral Dissertation]. University of Kansas; 2015. Available from: http://hdl.handle.net/1808/19398

University of Kansas

22. Duncan, Andrew M. High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling.

Degree: PhD, Chemical & Petroleum Engineering, 2015, University of Kansas

URL: http://hdl.handle.net/1808/21687

► Biodiesel was produced in excess of one billion gallons in the United States last year. It is sold as B100 (neat) and as a variety… (more)

Subjects/Keywords: Chemical engineering; Mechanical engineering; Biodiesel; Diesel; High; Pressure; Tait-Litovitz; Viscosity

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APA (6^th Edition):

Duncan, A. M. (2015). High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/21687

Chicago Manual of Style (16^th Edition):

Duncan, Andrew M. “High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling.” 2015. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/21687.

MLA Handbook (7^th Edition):

Duncan, Andrew M. “High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling.” 2015. Web. 05 Mar 2021.

Vancouver:

Duncan AM. High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling. [Internet] [Doctoral dissertation]. University of Kansas; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/21687.

Council of Science Editors:

Duncan AM. High-Pressure Viscosity of Biodiesel, Diesel, and Biodiesel-Diesel Blends: Experimental Data and Modeling. [Doctoral Dissertation]. University of Kansas; 2015. Available from: http://hdl.handle.net/1808/21687

23. Ragone, J. Colter. Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine.

Degree: MS, Mechanical Engineering, 2012, University of Kansas

URL: http://hdl.handle.net/1808/10206

► Due to increasingly stringent regulations set forth by the Environmental Protection Agency, engine researchers and manufacturers are testing and developing various emission reduction strategies for… (more)

▼ Due to increasingly stringent regulations set forth by the Environmental Protection Agency, engine researchers and manufacturers are testing and developing various emission reduction strategies for compression ignition engines. This thesis contains three sections where the author details two separate strategies for emission reduction and assisted combustion. Combustion resulting from compression ignition diesel engines contains high levels of nitrogen oxides (NOx) due to their lean operating characteristics. A common NOx reduction strategy used by most automotive manufactures involves the use of cooled EGR (exhaust gas recirculation) to reduce combustion temperatures. However, a downfall to this method is the formation of particulate matter (PM) from the reduced combustion temperatures. This reduction in NOx emissions with resulting increasing PM emissions describes the well-known NOx-PM tradeoff. Typically, a reduction in one of the emissions will result in an increase in the other. Chapter two documents the construction and testing of a cooled EGR system for a single cylinder diesel engine along with subsequent performance and emission analysis. The result of the cooled EGR system demonstrates a reduction in brake specific NOx due to reduced combustion temperatures, while decreasing brake specific PM due to increased turbulence. Resulting performance calculations displayed a slight increase in fuel consumption. Chapter three analyzes the effects of ozone-assisted combustion on a single cylinder diesel engine. This work starts with a summarization of the literature in the field, which supports the simplified combustion model for determination of trends. Experimentation results demonstrate the addition of ozone causes a decrease in ignition delay, which produces slightly higher in-cylinder temperatures. Due to the elevated temperatures and ozone decomposition, NOx production increases, while PM decreases through radial atomic oxygen chemistry. Additionally, carbon monoxide emissions increase while hydrocarbon levels decrease. The changes in fuel consumption resulting from ozone injection are negligible. Of additional importance, this work verifies findings in the literature that demonstrate the effects of adding more ozone is negligible above a certain level of ozone injection (20 ppm in this effort). This is due to high concentrations of ozone facilitating its own destruction during the compression process of the engine. Advisors/Committee Members: Depcik, Christopher (advisor), Depcik, Christopher (cmtemember), Dougherty, Ronald L. (cmtemember), Peltier, Edward (cmtemember).

Subjects/Keywords: Automotive engineering; Mechanical engineering; Diesel; Egr; Nox; Ozone; Pm; Reduction

…88 Figure 7. The University of Kansas Single Cylinder Engine Test Cell including (a… …The engine implemented for testing at The University of Kansas is a Yanmar L100V single… …University of Kansas, Department of Mechanical Engineering 1530 W. 15th Street, Lawrence, KS 66045…

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APA (6^th Edition):

Ragone, J. C. (2012). Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/10206

Chicago Manual of Style (16^th Edition):

Ragone, J Colter. “Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine.” 2012. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/10206.

MLA Handbook (7^th Edition):

Ragone, J Colter. “Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine.” 2012. Web. 05 Mar 2021.

Vancouver:

Ragone JC. Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/10206.

Council of Science Editors:

Ragone JC. Emission Reduction and Assisted Combustion Strategies for Compression Ignition Engines with Subsequent Testing on a Single-Cylinder Engine. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/10206

24. Gessler, Brian G. Implementation of a Fixed Bed Solid Fuel Combustor for the Purpose of Macroalgal Biomass Co-firing Studies.

Degree: MS, Mechanical Engineering, 2017, University of Kansas

URL: http://hdl.handle.net/1808/26462

► Coal-fired power plants represent the majority share of fossil fuel based electricity generation facilities. Due to their numerous negative environmental impacts, however, they are targeted… (more)

▼ Coal-fired power plants represent the majority share of fossil fuel based electricity generation facilities. Due to their numerous negative environmental impacts, however, they are targeted for reduction and eventual replacement. Algal biomass is a promising third generation biofuel that could reduce coal usage through co-firing in the near future and possibly replace coal in the more distant future. Unlike another popular co-combustion biomass, woody biomass, little is known about direct algae firing and co-firing. As a result, a solid fuel combustor is created and instrumented with the intent of burning pelleted mixtures of pine, macroalgae, and coal in order to determine algae’s properties as a direct firing and co-firing fuel. In keeping with this vision, a normalization study is conducted using various mixtures of pine and algae, finding that increasing algae content yielded higher exhaust temperatures with more nitrogen oxides and sulfur oxides emissions than pine. Emissions of carbon dioxide are reduced with increasing algae content, however. A normalization study is also proposed using coal-biomass fuel blends, but technical issues required that a separate accelerant study be made. It is found that 10 mL of petroleum distillate added to the fuel just before attempting ignition greatly improved the combustion characteristics of the coal-containing pellets. However, increased air flow rates from the biomass mixtures are also required to begin shifting the coal-containing mixture to thorough and complete combustion. The adjustments to the air flow rates provided to the burner prompted further modifications of the setup and the experimental procedures to ensure the safety and sustainability of the experimentation. An optimization study is also begun, yielding a simple but accurate mass burned calculator that can be used to augment and improve further experiments. Tangent to this optimization study is a flow validation study which ultimately failed in its intended goal of validating the Alicat reported air flow rates. Despite its difficulties, however, this study provided significant insight regarding the sizing and design of the pipe diameters and lengths employed in a Pitot-tube based system. Advisors/Committee Members: Depcik, Christopher (advisor), Depcik, Christopher (cmtemember), Peltier, Edward (cmtemember), Dougherty, Ronald (cmtemember).

Subjects/Keywords: Mechanical engineering; Energy; algal fuels; biomass; co-combustion; co-firing; combustion; renewables

…kilo-Joules per kilo-mole kmol – kilo-moles kPa - kilo-Pascal KU – University of Kansas kWh… …x5D;. Thus, a custom solid fuel combustor is designed and fabricated at the University of… …Kansas for comparing solid macroalgae to woody biomass (i.e., pine) as a fuel source…

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APA (6^th Edition):

Gessler, B. G. (2017). Implementation of a Fixed Bed Solid Fuel Combustor for the Purpose of Macroalgal Biomass Co-firing Studies. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/26462

Chicago Manual of Style (16^th Edition):

Gessler, Brian G. “Implementation of a Fixed Bed Solid Fuel Combustor for the Purpose of Macroalgal Biomass Co-firing Studies.” 2017. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/26462.

MLA Handbook (7^th Edition):

Gessler, Brian G. “Implementation of a Fixed Bed Solid Fuel Combustor for the Purpose of Macroalgal Biomass Co-firing Studies.” 2017. Web. 05 Mar 2021.

Vancouver:

Gessler BG. Implementation of a Fixed Bed Solid Fuel Combustor for the Purpose of Macroalgal Biomass Co-firing Studies. [Internet] [Masters thesis]. University of Kansas; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/26462.

Council of Science Editors:

Gessler BG. Implementation of a Fixed Bed Solid Fuel Combustor for the Purpose of Macroalgal Biomass Co-firing Studies. [Masters Thesis]. University of Kansas; 2017. Available from: http://hdl.handle.net/1808/26462

25. Moore, Cody K. Applications of Small Wind Turbines Emphasizing the Economic Viability of Integration into a Home Energy System.

Degree: MS, Mechanical Engineering, 2014, University of Kansas

URL: http://hdl.handle.net/1808/18415

► Given the amount of electrical consumption associated with living in contemporary society, renewable energy technologies that offer a distributed and cost effective means of generating… (more)

▼ Given the amount of electrical consumption associated with living in contemporary society, renewable energy technologies that offer a distributed and cost effective means of generating electricity need to be further developed and researched. Small wind turbines have the capacity to provide the electrical needs of many residences in the United States. While the benefits associated with using renewable resources and being self-sufficient are widely recognized, these turbines are often marketed without an accompanied understanding of how wind turbines can be successfully integrated into the home energy system (HES) in an efficient and cost effective manner. The result of this is that the cost of energy (COE) associated with small wind turbines is too high and prohibits many potential customers from utilizing this form of energy. In order for the small wind turbine market to gain market prominence in the residential sector, there needs to be a better conceptual understanding of how wind turbines can be integrated into the HES. Moreover, small wind turbines can also offer an effective means for generating electricity for off-grid locations in developing countries. This technology primarily competes with conventional petroleum based generators and solar photovoltaic technology, and the advantages of using small wind turbine technology over these other two technologies is often not clear. This thesis researches how heat pumps can be used to better integrate wind turbines into the HES. Because wind turbine COE is the primary deterrent to their more widespread use, the impact that this technology can have in reducing the COE of wind turbines is analyzed. Through simulating potential wind turbine applications utilizing heat pumps, this research furthers the conceptual understanding of the systems by which wind turbines can be utilized in an efficient and cost effective manner. The relationship between a prevailing wind and the thermal load on a residence is analyzed, and this analysis coupled with the use of heat pumps to better integrate a wind turbine into the HES represents a unique contribution to this area of literature. This research also studies the performance of a small wind turbine in a developing country. Given a specific electric load requirement, it analyzes how well suited the wind turbine is for supplying the needed electricity as compared to a conventional gasoline generator and to the potential use of solar photovoltaics. The specific advantages and disadvantages of each of these three technologies are discussed. Advisors/Committee Members: Depcik, Christopher (advisor), Depcik, Christopher (cmtemember), Yimer, Bedru (cmtemember), Medina, Mario A. (cmtemember).

Subjects/Keywords: Engineering; Mechanical engineering; Economic; Energy; Integrate; Turbine; Viability; Wind

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APA (6^th Edition):

Moore, C. K. (2014). Applications of Small Wind Turbines Emphasizing the Economic Viability of Integration into a Home Energy System. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/18415

Chicago Manual of Style (16^th Edition):

Moore, Cody K. “Applications of Small Wind Turbines Emphasizing the Economic Viability of Integration into a Home Energy System.” 2014. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/18415.

MLA Handbook (7^th Edition):

Moore, Cody K. “Applications of Small Wind Turbines Emphasizing the Economic Viability of Integration into a Home Energy System.” 2014. Web. 05 Mar 2021.

Vancouver:

Moore CK. Applications of Small Wind Turbines Emphasizing the Economic Viability of Integration into a Home Energy System. [Internet] [Masters thesis]. University of Kansas; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/18415.

Council of Science Editors:

Moore CK. Applications of Small Wind Turbines Emphasizing the Economic Viability of Integration into a Home Energy System. [Masters Thesis]. University of Kansas; 2014. Available from: http://hdl.handle.net/1808/18415

26. Hausmann, Austin Joseph. Advances in Electric Drive Vehicle Modeling with Subsequent Experimentation and Analysis.

Degree: MS, Mechanical Engineering, 2012, University of Kansas

URL: http://hdl.handle.net/1808/10187

► A combination of stricter emissions regulatory standards and rising oil prices is leading many automotive manufacturers to explore alternative energy vehicles. In an effort to… (more)

▼ A combination of stricter emissions regulatory standards and rising oil prices is leading many automotive manufacturers to explore alternative energy vehicles. In an effort to achieve zero tail pipe emissions, many of these manufacturers are investigating electric drive vehicle technology. In an effort to provide University of Kansas students and researchers with a stand-alone tool for predicting electric vehicle performance, this work covers the development and validation of various models and techniques. Chapter 2 investigates the practicality of vehicle coast down testing as a suitable replacement to moving floor wind tunnel experimentation. The recent implementation of full-scale moving floor wind tunnels is forcing a re-estimation of previous coefficient of drag determinations. Moreover, these wind tunnels are relatively expensive to build and operate and may not capture concepts such as linear and quadratic velocity dependency along with the influence of tire pressure on rolling resistance. The testing method explained here improves the accuracy of the fundamental vehicle modeling equations while remaining relatively affordable. The third chapter outlines various models used to predict battery capacity. The authors investigate the effectiveness of Peukert's Law and its application in lithium-based batteries. The work then presents the various effects of battery temperature on capacity and outlines previous work in the field. This paper then expands upon Peukert's equation in order to include both variable current and temperature effects. The method proposed captures these requirements based on a relative maximum capacity criterion. Experimental methods presented in the paper provide an economical testing procedure capable of producing the required coefficients in order to build a high-level, yet accurate state of charge prediction model. Moreover, this work utilizes automotive grade lithium-based batteries for realistic outcomes in the electrified vehicle realm. The fourth chapter describes an advanced numerical model for computing vehicle energy usage performance. This work demonstrates the physical and mathematical theories involved, while building on the principles of Newton's second law of motion. Moreover, this chapter covers the equipment, software, and processes necessary for collecting the required data. Furthermore, a real world, on-road driving cycle provides for a quantification of accuracy. Multiple University of Kansas student project vehicles are then studied using parametric studies applicable to the operating requirements of the vehicles. Further investigation demonstrates the accuracy and trends associated with the advanced models presented in Chapters 2 and 3. Lastly, chapter 5 investigates the design and building of a graphical user interface (GUI) for controlling the models created in the previous three chapters. The chapter continues to outline the creation of a stand-alone GUI as well as instructions for implementation, usage, and data analysis. Advisors/Committee Members: Depcik, Christopher (advisor), Dougherty, Ronald L. (cmtemember), Faddis, Terry (cmtemember).

Subjects/Keywords: Automotive engineering; Mechanical engineering; Battery; Coastdown; Electric; Lithium; Modeling; Vehicle

…the environment. 2. Past Efforts in Electrified Vehicles at the University of Kansas In… …GMC Jimmy SUV in the process of conversion to a modern BEV, for the University of Kansas… …Engineering - University of Kansas, Lawrence, Kansas (United States) Abstract This study… …of Kansas [15]. By focusing on the five core principles of sustainability (… …in an effort to bring a sustainable approach for the automotive industry to the University…

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APA (6^th Edition):

Hausmann, A. J. (2012). Advances in Electric Drive Vehicle Modeling with Subsequent Experimentation and Analysis. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/10187

Chicago Manual of Style (16^th Edition):

Hausmann, Austin Joseph. “Advances in Electric Drive Vehicle Modeling with Subsequent Experimentation and Analysis.” 2012. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/10187.

MLA Handbook (7^th Edition):

Hausmann, Austin Joseph. “Advances in Electric Drive Vehicle Modeling with Subsequent Experimentation and Analysis.” 2012. Web. 05 Mar 2021.

Vancouver:

Hausmann AJ. Advances in Electric Drive Vehicle Modeling with Subsequent Experimentation and Analysis. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/10187.

Council of Science Editors:

Hausmann AJ. Advances in Electric Drive Vehicle Modeling with Subsequent Experimentation and Analysis. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/10187

27. Rooney, Craig. Development of an Independent Hip Drive for a 2D Biped Walking Machine.

Degree: MS, Mechanical Engineering, 2012, University of Kansas

URL: http://hdl.handle.net/1808/10204

► Bipedal robots have advantages over wheeled or multi-legged robots because they require fewer footholds for locomotion and can traverse a larger percentage of Earth's terrain… (more)

Subjects/Keywords: Mechanical engineering; Robotics; Biped; Gait; Robot

…University of Kansas, Lawrence, KS, pp. 5. [3] [4] Ruiz, M. Active hip… …actuation for walking biped with passive option. M.E. dissertation, University of Kansas, United… …walking machine designed for rough terrain locomotion,” Ph.D. thesis, the University of Kansas… …machine designed for rough terrain locomotion,” Ph.D. thesis, the University of Kansas, Lawrence… …Intelligent Systems and Automation Lab (ISAL) at the University of Kansas is to develop…

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APA (6^th Edition):

Rooney, C. (2012). Development of an Independent Hip Drive for a 2D Biped Walking Machine. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/10204

Chicago Manual of Style (16^th Edition):

Rooney, Craig. “Development of an Independent Hip Drive for a 2D Biped Walking Machine.” 2012. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/10204.

MLA Handbook (7^th Edition):

Rooney, Craig. “Development of an Independent Hip Drive for a 2D Biped Walking Machine.” 2012. Web. 05 Mar 2021.

Vancouver:

Rooney C. Development of an Independent Hip Drive for a 2D Biped Walking Machine. [Internet] [Masters thesis]. University of Kansas; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/10204.

Council of Science Editors:

Rooney C. Development of an Independent Hip Drive for a 2D Biped Walking Machine. [Masters Thesis]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/10204

28. Collins, Patrick Gordon. Second Generation Electric Vehicle Development at the University of Kansas.

Degree: MS, Mechanical Engineering, 2015, University of Kansas

URL: http://hdl.handle.net/1808/19427

► Due to more stringent emissions and fuel economy standards, many automotive manufacturers are implementing more electric and hybrid vehicles into their model fleets. Hybrid and… (more)

▼ Due to more stringent emissions and fuel economy standards, many automotive manufacturers are implementing more electric and hybrid vehicles into their model fleets. Hybrid and purely electric powertrains offer more sustainable transportation methods; however, larger sport utility vehicles and trucks occupy a significant majority of the vehicles on the road in the United States. To this end, this work covers the development of a second generation electric sport utility vehicle at the University of Kansas. Chapter 2 of this thesis outlines the use of CAN bus in the automotive industry throughout the evolution of the Electronic Control Module. Chapter 2 also showcases the different types of control modules installed in vehicles. CAN bus theory of operation, message formats, error handling, wiring techniques, and additional vehicle networking methods are also discussed. Lastly, electric vehicle case studies at the University of Kansas are presented to illustrate the importance and benefits of implementing CAN bus. Chapter 3 focuses on the development of the JimmE-V. The JimmE-V serves as a research vehicle that has features similar to EVs available to consumers. In order for the vehicle to generate research quality data, vehicle operation and systems integration are discussed. CAN bus communication allows components to be controlled, calibrated, and monitored in real-time allowing the JimmE-V to be adjusted for a variety of research studies. Safety information is also provided due to the high voltage potential when working with EVs. The different causes for vehicle failure are additionally included in this chapter. Chapter 4 examines the complete energy and emissions produced by the JimmE-V. This chapter highlights the energy used in the vehicle manufacturing process in addition to examining the benefit of reusing vehicle components. Furthermore, a Life-Cycle Analysis (LCA) was generated using Argonne National Laboratory’s Greenhouse Gasses, Regulated Emissions, and Energy Use in Transportation (GREET) model. The LCA provides estimations for the JimmE-V’s energy use and emissions produced throughout the vehicle’s lifetime use. Accompanying this information is information regarding the iv production and recycling of LiFePO4 batteries. This work’s LCA efforts for the JimmE-V are compared to the previous LCA efforts for the VW Beetle. Drive cycle data was collected to examine the efficiency of the JimmE-V, and to compare the results to the VW Beetle. Lastly, the solar generation capabilities of the newly built (2013) Hill Engineering Research and Development Center are presented. Lastly, Chapter 5 focuses on the conclusions of the JimmE-V project mainly highlighting the author’s main contributions to EV projects at the University of Kansas. The author’s main contributions were centered on the powertrain of the JimmE-V including the motor, controller, ECM, and battery pack. This chapter additionally focuses on the vehicle’s future impact as a research platform. Advisors/Committee Members: Depcik, Christopher (advisor), Yimer, Bedru (cmtemember), Fang, Huazhen (cmtemember).

Subjects/Keywords: Mechanical engineering; Automotive engineering; Electrical engineering; CAN; Electric Vehicle; EV; LCA; LiFePO4; SUV

…2 1.2 Past Efforts in Electrified Vehicles at the University of Kansas Mechanical… …Engineering Associate Professor Dr. Christopher Depcik established the University of Kansas (… …case studies involving the author’s work with the University of Kansas EcoHawks Electric… …Standardization JimmE-V – 1997 GMC Jimmy (aka Chevy Blazer) EV conversion KU – University of… …Kansas kW – Kilowatt kWh – Kilowatt hour LCA – Life Cycle Analysis LFP – Lithium Iron Phosphate…

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APA (6^th Edition):

Collins, P. G. (2015). Second Generation Electric Vehicle Development at the University of Kansas. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/19427

Chicago Manual of Style (16^th Edition):

Collins, Patrick Gordon. “Second Generation Electric Vehicle Development at the University of Kansas.” 2015. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/19427.

MLA Handbook (7^th Edition):

Collins, Patrick Gordon. “Second Generation Electric Vehicle Development at the University of Kansas.” 2015. Web. 05 Mar 2021.

Vancouver:

Collins PG. Second Generation Electric Vehicle Development at the University of Kansas. [Internet] [Masters thesis]. University of Kansas; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/19427.

Council of Science Editors:

Collins PG. Second Generation Electric Vehicle Development at the University of Kansas. [Masters Thesis]. University of Kansas; 2015. Available from: http://hdl.handle.net/1808/19427

29. AlZeeby, Khalaf. The Optimization of Data Acquisition, Fuel Flow, and Spark Timing Control for a Synthesis Gas-Engine-Generator System.

Degree: MS, Mechanical Engineering, 2018, University of Kansas

URL: http://hdl.handle.net/1808/27585

► As climate change drives the exploration into new and alternative fuels, biodiesel has emerged as a promising alternative to traditional diesel fuel. To further increase… (more)

▼ As climate change drives the exploration into new and alternative fuels, biodiesel has emerged as a promising alternative to traditional diesel fuel. To further increase the viability of biodiesel, a unique system at the University of Kansas utilizes glycerin, the primary byproduct of biodiesel production, for power generation. This system converts glycerin into a hydrogen-rich gas (syngas) that is sent to an engine-generator system in one continuous flow process. This thesis details the implementation and troubleshooting of recent upgrades to the system, the experimental optimization of propane fuel and spark control for the engine, and directions for future research involving this setup. Chapter Two describes recent changes in the Syngas Rig including the renovation and replacement of various components to enhance the efficiency of the system and to resolve encountered issues. For instance, a recently installed water pump (Berkeley Model S39533) in the cooling system replaced the stock mechanical pump to eliminate an engine overheating issue. Moreover, additional safety measures were implemented in the fuel system in order to prevent any unintentional activation of fuel flow. All of the rig’s operating paths now require the activation of both mechanical and electric switches by wiring in a series instead of through parallel circuits. This chapter also includes troubleshooting guidelines to aid future students in utilizing the system. The third chapter discusses upgrades in pure propane operation that help by preheating the engine prior to syngas operation and establishing the baseline energy requirement for fueling the system. In addition, an upgrade to the fuel system incorporates an electric fuel valve (EFV) as a replacement for a gaseous propane carburetor, providing the ability for air-to-fuel ratio (AFR) adjustment of the engine at different generator loads. Moreover, spark timing optimization accompanies the new fuel control in order to enhance engine performance and maximize fuel economy. Additionally, in-cylinder pressure traces and associated performance parameters are reviewed and discussed in order to analyze the operation of the new EFV-based system. Finally, the fourth chapter provides a thorough discussion of the thesis efforts along with suggested directions for future research. Advisors/Committee Members: Depcik, Christopher (advisor), Dougherty, Ronald (cmtemember), Williams, Susan (cmtemember).

Subjects/Keywords: Mechanical engineering; Alternative Energy Systems; Alternative Fuels; Biodiesel; Internal Combustion Engine; Syngas

…Indicated Mean Effective Pressure IVC Inlet Valve Close KU University of Kansas lb. Pound… …1.2 Background and Experimental Setup The Syngas Rig at the University of Kansas PR 1 PR 2… …production, a unique system at the University of Kansas (KU) has been developed that… …University of Kansas. This includes the hardware and software upgrades to the controlling and… …Previous efforts at the University of Kansas resulted in a unique system that utilizes glycerin…

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APA (6^th Edition):

AlZeeby, K. (2018). The Optimization of Data Acquisition, Fuel Flow, and Spark Timing Control for a Synthesis Gas-Engine-Generator System. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/27585

Chicago Manual of Style (16^th Edition):

AlZeeby, Khalaf. “The Optimization of Data Acquisition, Fuel Flow, and Spark Timing Control for a Synthesis Gas-Engine-Generator System.” 2018. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/27585.

MLA Handbook (7^th Edition):

AlZeeby, Khalaf. “The Optimization of Data Acquisition, Fuel Flow, and Spark Timing Control for a Synthesis Gas-Engine-Generator System.” 2018. Web. 05 Mar 2021.

Vancouver:

AlZeeby K. The Optimization of Data Acquisition, Fuel Flow, and Spark Timing Control for a Synthesis Gas-Engine-Generator System. [Internet] [Masters thesis]. University of Kansas; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/27585.

Council of Science Editors:

AlZeeby K. The Optimization of Data Acquisition, Fuel Flow, and Spark Timing Control for a Synthesis Gas-Engine-Generator System. [Masters Thesis]. University of Kansas; 2018. Available from: http://hdl.handle.net/1808/27585

30. Yun, Jin-Ho. THE POTENTIAL OF FRESHWATER MACROALGAE AS A BIOFUELS FEEDSTOCK AND THE INFLUENCE OF NUTRIENT AVAILABILITY ON FRESHWATER MACROALGAL BIOMASS PRODUCTION.

Degree: MA, Ecology & Evolutionary Biology, 2014, University of Kansas

URL: http://hdl.handle.net/1808/18097

► Extensive efforts have been made to evaluate the potential of microalgae as a biofuel feedstock during the past 4-5 decades. However, filamentous freshwater macroalgae have… (more)

▼ Extensive efforts have been made to evaluate the potential of microalgae as a biofuel feedstock during the past 4-5 decades. However, filamentous freshwater macroalgae have numerous characteristics that favor their potential use as an alternative algal feedstock for biofuels production. Freshwater macroalgae exhibit high rates of areal productivity, and their tendency to form dense floating mats on the water surface imply significant reductions in harvesting and dewater costs compared to microalgae. In Chapter 1, I reviewed the published literature on the elemental composition and energy content of five genera of freshwater macroalgae. This review suggested that freshwater macroalgae compare favorably with traditional bio-based energy sources, including terrestrial residues, wood, and coal. In addition, I performed a semi-continuous culture experiment using the common Chlorophyte genus Oedogonium to investigate whether nutrient availability can influence its higher heating value (HHV), productivity, and proximate analysis. The experimental study suggested that the most nutrient-limited growth conditions resulted in a significant increase in the HHV of the Oedogonium biomass (14.4 MJ/kg to 16.1 MJ/kg). Although there was no significant difference in productivity between the treatments, the average dry weight productivity of Oedogonium (3.37 g/m2/day) was found to be much higher than is achievable with common terrestrial plant crops. Although filamentous freshwater macroalgae, therefore, have significant potential as a renewable source of bioenergy, the ultimate success of freshwater macroalgae as a biofuel feedstock will depend upon the ability to produce biomass at the commercial-scale in a cost-effective and sustainable manner. Aquatic ecology can play an important role to achieve the scale-up of algal crop production by informing the supply rates of nutrients to the cultivation systems, and by helping to create adaptive production systems that are resilient to environmental change. In Chapter 2, I performed a review and an analysis of data from the published literature on the large-cultivation of freshwater macroalgae. This study revealed that the large-scale cultivation of freshwater macroalgae is feasible at relatively low cost using currently available technologies such as the Algal Turf Scrubber system (ATS). In addition, graphical analyses of published data obtained from ATS systems of varying sizes in operation worldwide revealed that both macroalgal biomass productivity and nutrient removal rates are hyperbolically related to the areal loading rates of both total nitrogen and total phosphorus. An assessment of the limited existing literature on carbon dioxide amendments suggested that the effectiveness and need for CO2 supplementation of macroalgal production systems like the ATS has not yet been conclusively demonstrated. Overall, this thesis demonstrates that filamentous freshwater macroalgae have great potential as a feedstock for both liquid and solid fuels, especially if nutrient-rich wastewater can be… Advisors/Committee Members: Smith, Val (advisor), deNoyelles, Frank (cmtemember), Depcik, Christopher (cmtemember).

Subjects/Keywords: Ecology; Environmental studies; Energy; Algal biofuels; Algal Turf Scrubber (ATS); Biomass productivity; Freshwater macroalgae; Higher Heating Value (HHV); Nutrients

…wastewater effluent-fed stock tank maintained year-round in the University of Kansas greenhouse…

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APA (6^th Edition):

Yun, J. (2014). THE POTENTIAL OF FRESHWATER MACROALGAE AS A BIOFUELS FEEDSTOCK AND THE INFLUENCE OF NUTRIENT AVAILABILITY ON FRESHWATER MACROALGAL BIOMASS PRODUCTION. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/18097

Chicago Manual of Style (16^th Edition):

Yun, Jin-Ho. “THE POTENTIAL OF FRESHWATER MACROALGAE AS A BIOFUELS FEEDSTOCK AND THE INFLUENCE OF NUTRIENT AVAILABILITY ON FRESHWATER MACROALGAL BIOMASS PRODUCTION.” 2014. Masters Thesis, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/18097.

MLA Handbook (7^th Edition):

Yun, Jin-Ho. “THE POTENTIAL OF FRESHWATER MACROALGAE AS A BIOFUELS FEEDSTOCK AND THE INFLUENCE OF NUTRIENT AVAILABILITY ON FRESHWATER MACROALGAL BIOMASS PRODUCTION.” 2014. Web. 05 Mar 2021.

Vancouver:

Yun J. THE POTENTIAL OF FRESHWATER MACROALGAE AS A BIOFUELS FEEDSTOCK AND THE INFLUENCE OF NUTRIENT AVAILABILITY ON FRESHWATER MACROALGAL BIOMASS PRODUCTION. [Internet] [Masters thesis]. University of Kansas; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/18097.

Council of Science Editors:

Yun J. THE POTENTIAL OF FRESHWATER MACROALGAE AS A BIOFUELS FEEDSTOCK AND THE INFLUENCE OF NUTRIENT AVAILABILITY ON FRESHWATER MACROALGAL BIOMASS PRODUCTION. [Masters Thesis]. University of Kansas; 2014. Available from: http://hdl.handle.net/1808/18097

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