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Dissertations / Theses on the topic 'Fuel systems'

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1

Shaffer, Christian Edward. "Flow system modeling with applications to fuel cell systems." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4198.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains xii, 111 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 100-102).
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2

Bradley, Thomas Heenan. "Modeling, design and energy management of fuel cell systems for aircraft." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26592.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Parekh, David; Committee Member: Fuller, Thomas; Committee Member: Joshi, Yogendra; Committee Member: Mavris, Dimitri; Committee Member: Wepfer, William. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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3

Thomas, Alex S. M. Massachusetts Institute of Technology. "An analysis of distributed solar fuel systems." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76511.

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Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 85-89).<br>While solar fuel systems offer tremendous potential to address global clean energy needs, most existing analyses have focused on the feasibility of large centralized systems and applications. Not much research exists on the feasibility of distributed solar fuel systems. This thesis is an attempt to understand the larger context of solar fuel sys
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4

Stutz, Michael Jun. "Hydrocarbon fuel processing of micro solid oxide fuel cell systems." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17455.

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5

Tesfahunegn, Samson Gebre. "Fuel Cell Assisted PhotoVoltaic Power Systems." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16942.

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Distributed generation (DG) systems as local power sources have great potential to contribute toward energy sustainability, energy efficiency and supply reliability. This thesis deals with DGs that use solar as primary energy input, hydrogen energy storage and conversion technologies (fuel cells and water electrolyzers) as long term backup and energy storage batteries and supercapacitors as short term backup. Standalone power systems isolated from the grid such as those used to power remote area off-grid loads and grid connected systems running in parallel with the main utility grid or a micro
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Barroqueiro, Sergio A. B. "Chromatic sensors for aircraft fuel systems." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399038.

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7

Robbie, M. J. "Regenerative pumps for aircraft fuel systems." Thesis, Cranfield University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359572.

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8

LAMBERTI, THOMAS. "Fuel cell systems for marine applications." Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/931185.

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The aim of this work is the assessment of the most suitable hydrogen solution for ship applications and the definition of the role of hydrogen as alternative fuel for shipping. The importance of the “Hydrogen Technologies” for ships comes from the most important social challenge that is driving innovation in the shipping sector: Environmental Challenge. The PhD research project encountered important development both from the industrial and the academic side that brought to the construction of a joint laboratory between Fincantieri and the Polytechnic School of the University of Genoa, the: HI
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9

Pulido, Jon R. (Jon Ramon) 1974. "Modeling hydrogen fuel distribution infrastructure." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29529.

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Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2004.<br>Includes bibliographical references (p. 70-73).<br>This thesis' fundamental research question is to evaluate the structure of the hydrogen production, distribution, and dispensing infrastructure under various scenarios and to discover if any trends become apparent after sensitivity analysis. After reviewing the literature regarding the production, distribution, and dispensing of hydrogen fuel, a hybrid product pathway and network flow model is created and solved. In the literature revie
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10

Kroll, Douglas M. (Douglas Michael). "Using polymer electrolyte membrane fuel cells in a hybrid surface ship propulsion plant to increase fuel efficiency." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61909.

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Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 59).<br>An increasingly mobile US Navy surface fleet and oil price uncertainty contrast with the Navy's desire to lower the amount of money spent purchasing fuel. Operational restrictions limiting fuel use are temporary and cannot be dependably relied upon. Long term te
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11

Shehadi, Charles A. III (Charles Anthony), and Michael R. Witalec. "How to utilize hedging and a fuel surcharge program to stabilize the cost of fuel." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61186.

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Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 101-103).<br>This paper looks at some of these travails as well as the common tools used to approach a volatile priced commodity, diesel fuel. It focuses on the impacts of hedging for companies that are directly impacted through the consumption of diesel fuel in addition to companies that are indirectly impacted because they outsource their transportation. It examines the impact of a fuel surcharge and how
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12

Colella, W. G. "Combined heat and power fuel cell systems." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411153.

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13

Blanchard, Tina-Louise. "A Systems Engineering Reference Model for Fuel Cell Power Systems Development." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1322713336.

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14

Saxe, Maria. "Bringing fuel cells to reality and reality to fuel cells : A systems perspective on the use of fuel cells." Doctoral thesis, KTH, Energiprocesser, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9192.

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With growing awareness of global warming and fear of political instability caused by oil depletion, the need for a society with a sustainable energy system has been brought to the fore. A promising technology often mentioned as a key component in such a system is the fuel cell technology, i.e. the energy conversion technology in focus in this thesis. The hopes and expectations on fuel cells are high and sometimes unrealistically positive. However, as an emerging technology, much remains to be proven and the proper use of the technology in terms of suitable applications, integration with societ
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15

Szakaly, Frank Joseph. "Assessment of uranium-free nitride fuels for spent fuel transmutation in fast reactor systems." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/31.

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The purpose of this work is to investigate the implementation of nitride fuels containing little or no uranium in a fast-spectrum nuclear reactor to reduce the amount of plutonium and minor actinides in spent nuclear fuel destined for the Yucca Mountain Repository. A two tier recycling strategy is proposed. Thermal spectrum transmutation systems converted from the existing LWR fleet were modeled for the first tier, and the Japanese fast reactor MONJU was used for the fast-spectrum transmutation. The modeling was performed with the Monteburns code. Transmutation performance was investigated
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16

Hines, Anne Michelle. "Characteristics of Active Combustion Control for Liquid-Fuel Systems with Proportional Primary Fuel Modulation." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/32569.

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The first part of this work focuses on control experiments performed on an unstable kerosene-fueled turbulent combustor. Using a phase shift controller and primary fuel modulation stability is successfully gained for a wide band of global equivalence ratios allowing the limitations of the control scheme to be characterized. It is shown that control signal saturation can significantly impact the ability of the control scheme to stabilize the system. Three different regions of controllability are defined based on the degree of saturation. A hysteresis behavior is also found to exist for the cont
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17

Neerkaje, Abhijith. "Strategies for the introduction of alternative fuel vehicles in India." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/90697.

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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 42-46).<br>Rapid growth in population and increase in disposable income has led to a robust increase in automotive sales in India. As in many parts of the world, the internal combustion engines are the dominant vehicle power train in India. This has led to increase in tailpipe emissions in congested cities as well as increased consumption of crude oil. I
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18

Ball, Barbara Jean 1955. "Using geographical information systems and neural networks to predict fuel moisture in homogeneous fuels." Thesis, The University of Arizona, 1994. http://hdl.handle.net/10150/278457.

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Computer models used to predict the pattern and rate of spread of fire in grasslands as well as other vegetation types rely on various inputs for their calculations. Because of the direct effect they have on the quantity of fuel available to carry a fire and the effects of moisture on the potential for fuel available to carry a fire and the effects of moisture on the potential for fuel to begin burning and to sustain a fire, fuel loading measurements, which are similar to production measurements in grasslands, and estimates of fuel moisture are two important variables to be considered when mod
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19

Azolibe, Ifeanyi. "Architecture of a cyber-physical system for aircraft fuel control systems tests." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/8503/.

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The aircraft fuel control system makes sure an engine has the precise amount of fuel required to generate power and thrust for every stage of flight. It therefore plays a role in determining the economics of flight. In order to maintain the economic equilibrium of performance and flight safety, it undergoes a Maintenance Repair or Overhaul (MRO) service after several hours of operation. A critical aspect of the MRO service is the test performed to validate the airworthiness of a fuel control system before it returns to service. The test of aircraft fuel control systems is human-centric by desi
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20

Skawinski, Grzegorz. "Fuel pump motor-drive systems for more electric aircraft." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527520.

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The fuel systems fitted to the current generation of civil transport aircraft are rather complicated, due to the presence of multiple tanks, pumps, valves and complex pipeline systems. During fuel transfer between the tanks, when controlling the aircraft centre of gravity or engine feed and refuel operations, a number of pumps and valves are involved resulting in complex pressure and flow interactions. In order to minimise the pressure surges during sudden system changes and flow overshoot during fuel transfer and refuelling, different motor drive system control strategies have been investigat
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21

Swedenborg, Samuel. "Modeling and Simulation of Cooling System for Fuel Cell Vehicle." Thesis, Uppsala universitet, Elektricitetslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326070.

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This report is the result of a master’s thesis project which covers the cooling system in Volvo Cars’ fuel cell test vehicle. The purpose is to investigate if the existing cooling system in the fuel cell test vehicle works with the current fuel cell system of the vehicle, in terms of sufficient heat rejection and thus sustaining acceptable temperature levels for the fuel cell system. The project also aims to investigate if it is possible to implement a more powerful fuel cell system in the vehicle and keep the existing cooling system, with only a few necessary modifications. If improvements in
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22

Gavel, Hampus. "On aircraft fuel systems : conceptual design and modeling." Doctoral thesis, Linköping : Division of Machine Design, Department of Mechanical Engineering, Linköpings universitet, 2007. http://www.bibl.liu.se/liupubl/disp/disp2007/tek1067s.pdf.

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23

McFarlane, Alexander. "Biofilm development and management in aircraft fuel systems." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/17655/.

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24

Tarud, Sofy 1980. "Feasibility of fuel cell systems for building applications." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/27135.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (p. 109-110).<br>Worldwide electricity consumption will nearly double between 2001 and 2025 but the projects to increase electricity production and transport will not be enough to fulfill the demand. In the future, most of the power demand will be produced by Distributed Generation (DG) systems. DG refers to power generating technologies independent from the electrical grid, located at or near the location where electricity is consumed. Fuel Cells have become very
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25

DE, CAMPO MARCO. "Analysis and modeling of PEM fuel cell systems." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/945505.

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Analisi e modellazione di sistemi a celle a combustibile di tipo PEM<br>The purpose of this thesis is to create a transient model of a PEM fuel cell system, based on Matlab Simulink, as general, flexible and adaptable as possible, in order to be easily set on different type of systems. The object of the study is the development of the simulation tool, and its validation against literature and experimental data. An important aim of the developed dynamic semi-empirical model is to try to adopt a theoretical physics-based approach whenever possible, in order to have an accurate scientific correla
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ABRASSI, ALESSIO. "Fuel cell hybrid systems, dynamics and surge analysis." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/945503.

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The improvement of energy system performance has led to the development of efficient dynamic compressors able to achieve high compression ratios, high flow rates of fluid and reduced weights. As it normally happens by nature, the higher is the desired performance the more difficult is to achieve it; in the case of dynamic compression, the need to reach increasingly higher compression ratios and larger operational flexibility involves the occurrence of unsteady phenomena such as rotating stall and surge. These two problematic phenomena characterize compressors with violent decrease of performan
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Bindingnolle, Narasimha Srivatsa. "Predictive modeling of fuel efficiency of trucks." Thesis, State University of New York at Binghamton, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10092244.

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<p> This research studied the behavior of several controllable variables that affect the fuel efficiency of trucks. Re-routing is the process of modifying the parameters of the routes for a set of trips to optimize fuel consumption and also to increase customer satisfaction through efficient deliveries. This is an important process undertaken by a food distribution company to modify the trips to adapt to the immediate necessities. A predictive model was developed to calculate the change in Miles per Gallon (MPG) whenever a re-route is performed on a region of a particular distribution area. Th
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Johnson, Kyle D. "High Performance Fuels for Water-Cooled Reactor Systems." Doctoral thesis, KTH, Reaktorfysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-201604.

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Investigation of nitride fuels and their properties has, for decades, been propelled on the basis of their desirable high metal densities and high thermal conductivities, both of which oer intrinsic advantages to performance, economy, and safety in fast and light water reactor systems. In this time several key obstacles have been identied as impeding the implementation of these fuels for commercial applications; namely chemical interactions with air and steam, the noted diculty in sintering of the material, and the high costs associated with the enrichment of 15N. The combination of these limi
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Hedström, Lars. "Fuel Cells and Biogas." Doctoral thesis, KTH, Energiprocesser, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-13219.

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This thesis concerns biogas-operated fuel cells. Fuel cell technology may contribute to more efficient energy use, reduce emissions and also perhaps revolutionize current energy systems. The technology is, however, still immature and has not yet been implemented as dominant in any application or niche market. Research and development is currently being carried out to investigate whether fuel cells can live up to their full potential and to further advance the technology. The research of thesis contributes by exploring the potential of using fuel cells as energy converters of biogas to electric
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30

Shevock, Bryan Wesley. "System Level Modeling of Thermal Transients in PEMFC Systems." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31079.

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Fuel cell system models are key tools for automotive fuel cell system engineers to properly size components to meet design parameters without compromising efficiency by over-sizing parasitic components. A transient fuel cell system level model is being developed that includes a simplified transient thermal and parasitics model. Model validation is achieved using a small 1.2 kW fuel cell system, due to its availability. While this is a relatively small stack compared to a full size automotive stack, the power, general thermal behavior, and compressor parasitics portions of the model can be scal
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De, Roo Guillaume. "Economics of nuclear fuel cycles : option valuation and neutronics simulation of mixed oxide fuels." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/57540.

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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references (p. 71-73).<br>In most studies aiming at the economic assessment of nuclear fuel cycles, a primary concern is to
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32

Ahlgren, Serina. "Crop production without fossil fuel : production systems for tractor fuel and mineral nitrogen based on biomass /." Uppsala : Dept. of Energy and Technology, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200978.pdf.

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33

Feroldi, Diego Hernán. "Control and design of pem fuel cell-based systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2009. http://hdl.handle.net/10803/5958.

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Las pilas de combustible son muy ventajosas debido a su alta eficiencia en la conversión de energía y nula contaminación. En esta tesis se realiza un extenso estudio sobre el control y diseño de sistemas de generación eléctrica basados en pilas de combustible. El núcleo principal de la misma son los sistemas híbridos con pilas de combustible y supercapacitores como elementos almacenadores de energía, orientado a aplicaciones automotrices. La determinación del Grado de Hibridización (i.e. la determinación del tamaño de la pila de combustible y del número de supercapacitores) se realiza mediante
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Nilsson, Marita. "Hydrogen Generation for Fuel Cells in Auxiliary Power Systems." Doctoral thesis, KTH, Kemiteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10024.

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Heavy-duty trucks are in idle operation during long periods of time, providing the vehicles with electricity via the alternator at standstill. Idling trucks contribute to large amounts of emissions and high fuel consumption as a result of the low efficiency from fuel to electricity. Auxiliary power units, which operate independently of the main engine, are promising alternatives for supplying trucks with electricity. Fuel cell-based auxiliary power units could offer high efficiencies and low noise. The hydrogen required for the fuel cell could be generated in an onboard fuel reformer using the
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Baniasad, Mohammad Saeid. "Analysis of fuel injection rate in diesel injection systems." Thesis, Imperial College London, 1994. http://hdl.handle.net/10044/1/7439.

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36

Tseronis, Konstantinos. "Modelling and Design of Solid Oxide Fuel Cell Systems." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511906.

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37

Lake, Timothy Hugh. "Gasoline combustion systems for improved fuel economy and emissions." Thesis, University of Brighton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302289.

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This document is the statement of independent and original contribution to knowledge represented by the published works in partial fulfilment of the requirements of the University of Brighton for the degree of Doctor of Philosophy (by publication). The thesis reviews the impact of research work conducted between 1992 and 1998 on various concepts to improve the economy and emissions of gasoline engines in order to address environmental and legislative pressures. The research has a common theme, examining the dilution of the intake charge (with either recycled exhaust gas [EGR], excess air, or t
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McCahey, Sharon. "The integration of fuel cells into power generation systems." Thesis, University of Ulster, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284835.

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Garcia, Jorge David S. M. Massachusetts Institute of Technology. "Sodium chlorate oxygen generation for fuel cell power systems." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112489.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 95-97).<br>In this thesis we experimentally investigated the use of sodium chlorate as an oxygen storage medium for use in underwater fuel cell power systems. Research into improving hydrogen storage systems is the primary concern when designing fuel cell systems with access to atmospheric oxygen. However, in an underwater environment, performance of the oxygen storage system cannot be overlooked. Oxygen candles
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Arana, Leonel R. "High-temperature microfluidic systems for thermally-efficient fuel processing." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/7995.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2003.<br>Includes bibliographical references (p. 231-238).<br>Miniaturized fuel cell systems have the potential to outperform batteries in powering a variety of portable electronics. The key to this technology is the ability to efficiently process an easily-stored, energy-dense fuel. In many cases, use of these fuels requires a fuel processor-a high temperature chemical reactor that generates a hydrogen-rich stream for use by the fuel cell. In high-temperature microfluidic systems, where heat transfer rates
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Sevencan, Suat. "Economic Aspects of Fuel Cell-Based Stationary Energy Systems." Doctoral thesis, KTH, Tillämpad elektrokemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-179137.

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It is evident that human activity has an important impact on climate. Constantly increasing energy demand is one of the biggest causes of climate change. The fifth assessment report of the Inter-governmental panel on climate change states that decarbonisation of electricity generation is a key component of climate change mitigation. Increased awareness of this fact and escalating concerns around energy security has brought public attention to the energy industry, especially sustainable power generation systems. Future energy systems may need to include hydrogen as an energy carrier in order to
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Khallat, Mohamed Ali. "A methodology for evaluating photovoltaic-fuel hybird energy systems." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/53626.

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A major issue encountered in the large scale use of Photovoltaic (PV) energy sources for the production of electricity is the variability of the resource itself. Extensive fluctuations of the PV generation may cause dynamic operational problems for an electric utility. In order to remedy this situation it is proposed that fuel cell power plants be operated in parallel with PV arrays. This hybrid operation will help to smooth out the fluctuating PV output. Because of its high ramping capability the fuel cell will be able to absorb such fluctuations. An overall methodology is presented to eval
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43

Jing, Junbo. "Vehicle Predictive Fuel-Optimal Control for Real-World Systems." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534506777487814.

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44

Ang, Sheila Mae Constantino. "Model-based design and operation of fuel cell systems." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1344169/.

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Fuel cells are a promising technology for the production of electricity from hydrogen or other fuels with high efficiency and low emissions. They are suitable for stationary, transportation and portable applications. However, they are still more expensive than existing technologies and there are technical challenges that need to be overcome for their commercialisation. Therefore, accurate and efficient design methodologies for fuel cell systems design are becoming increasingly important. Modelling and optimisation present a great potential to inform fuel cell systems design, which often result
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45

Bidoggia, Benoit. "Fuel cell and power converter systems : model and design." Thesis, Tours, 2009. http://www.theses.fr/2009TOUR4027/document.

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Les piles à combustible sont des dispositifs qui permettent de transformer directement l’énergie chimique potentielle d’un carburant en énergie électrique. Elle sont presque toujours couplées à un convertisseur de puissance et l’ensemble est ici appellé « système à pile à combustible ». Le comportement de ces systèmes, les interactions entre ses composants, ainsi que leurs réponses aux stimulations extérieures ont été analysés, étudiés et mesurés. A cet effet, un système à pile à combustible complet a été modélisé. Des critères de dimensionnement pour cas où ni la pile à combustible ni le conv
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DRAGO, DAVIDE. "The sulfur issue in Fuel Cell based cogenerative systems." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2676807.

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In a context in which climate changes due to the continuous and out of control use of fossil fuels are becoming always more significant, it is very important to try to foster energy conversion systems with a lower environmental impact such as FC-based cogenerative systems. With the necessary precautions, this kind of systems can be feed with a wide range of fuels, from the most conventional, such as hydrogen and natural gas, to those produced from renewable sources, such as biogas or gasification gas. Unfortunately, most of these fuels contains traces of elements that result to be detrimental
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47

Worley, John Wright. "A systems analysis of sweet sorghum harvest for a Piedmont ethanol industry." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07282008-135608/.

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48

Kim, Eun Hie, and Michael Nsiah-Gyimah. "The impact of fuel price volatility on transportation mode choice." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53542.

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Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2009.<br>Includes bibliographical references (leaves 43-45).<br>In recent years, the price of oil has driven large fluctuations in the price of diesel fuel, which is an important cost component in freight logistics. This thesis explores the impact of fuel price volatility on supply chains by examining the sensitivity of decisions under various scenarios. Specifically, we analyze the transportation mode choice decision between truckload and intermodal (truck combined with rail) transportation usi
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Pierpoint, Lara Marie. "A decision analysis framework for the U.S. nuclear fuel cycle." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68512.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Engineering Systems Division, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 163-168).<br>If we are willing to pay a premium, we may be able to mitigate some of the long-lasting impacts of nuclear waste. Deciding how to navigate this tradeoff, between cost and waste, is a central challenge for stewards of nuclear power. It is made more difficult by uncertainties that characterize the global future of nuclear electricity generation. The recent increase in concern about climate change has prompted
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Kanteti, Madhavi, and Jordan T. Levine. "Risk sharing in contracts : the use of fuel surcharge programs." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68825.

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Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 92-93).<br>Various industries employ risk sharing contracts to manage the risks and volatility associated with commodity prices, inaccurate customer demand forecasts, or unpredictable events. For example commodity futures that enable hedging, vendor buy-back programs, and insurance policies are examples of risk sharing contracts. The volatility in the price of fuel in the latter part of the twentieth centur
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