Дисертації з теми "Fuel and energy"
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Salih, Fawzi Mohamed. "Automotive fuel economy measures and fuel usage in Sudan." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293763.
Повний текст джерелаHull, Brent. "Fuel cell mositure and energy recovery." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16428.
Повний текст джерелаShandyba, Aleksandr. "The fuel energy prospects of Ukraine." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/10359.
Повний текст джерелаKhachatryan, Hayk. "Investigation of alternative fuel markets." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Dissertations/Spring2010/h_khachatryan_050310.pdf.
Повний текст джерелаChen, Rongjun. "Utilization of upland phytomass for fuel /." [Hong Kong] : University of Hong Kong, 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1354455X.
Повний текст джерелаAbdullah, Hanisom binti. "High energy density fuels derived from mallee biomass: fuel properties and implications." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/2259.
Повний текст джерелаMunzar, Jeffrey. "Laminar flame speed of jet fuel surrogates and second generation biojet fuel blends." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116976.
Повний текст джерелаLa comprehension des proprietes de combustion fondamentales des carburants alternatifs est essentielle pour leur adoption en remplacement des sources non renouvelables. Dans le secteur de l'aviation, un candidat encourageant est le carburant d'avion renouvelable hydrotraite (HRJF). HRJF peuvent etre synthetiser de maniere durable et economique en utilisant des esters methyliques a longue cha^ne procure de gras trouves dans les grains de jatropha et de cameline, et la caracterisation a l'echelle laboratoire des proprietes de combustion du HRJF est un domaine de recherche actif. Cette recherche est motivee, en partie, par la complexite chimique des combustibles d'avion biologiques qui sont composees de centaines d'especes d'hydrocarbures conventionnels, semblables a des combustibles d'aviation conventionnel. La vitesse de flamme laminaire a ete identie comme un parametre de combustion important pour de nombreuses applications de combustion, et est particulierement pertinent pour la communaute aeronautique. La vitesse de flamme laminaire est egalement un parametre important dans la validation des mecanismes de cinetiques chimiques, car il est representatif de la reactivite chimique du combustible. Dans cette etude, les flammes laminaire en stagnation, sous la pression atmospherique, et premelangees ont ete utilises pour determiner la vitesse de flamme laminaire de HRJF melanges dans des proportions variables avec du carburant de l'aviation Jet A-1, ce qui exigeait une combinaison de methodes experimentales et numeriques. Jet A-1 a egalement ete etudie pour permettre une analyse comparative des melanges de carburants. Des experiences ont ete menees dans une geometrie de vjet-mur flamme de stagnation a une temperature prechauee de 400 K. Des prols de vitesse centrales ont ete obtenus en utilisant la velocimetrie par image de particules, qui ont permit de determiner les vitesses de flammes de reference tendues. Simulations de chaque experience ont ete realisees en utilisant le logiciel CHEMKIN-PRO en conjunction avec un mecanisme chimique cinetique detaille, avec la specication de conditions aux limites necessaires prises entierement des mesures experimentales. Une methode de comparaison directe a ete utilisee pour deduire la vrai vitesse de flamme laminaire en utilisant les vitesses de flamme de reference tendues experimentales et numeriques. Pour modeliser la cinetique chimique du Jet A-1 et les melanges biologiques, il etait necessaire d'identier un melange de substitution qui emule la reactivite des carburants, tout en comprenant un nombre beaucoup plus restreint de combustibles purs. Les donnees publiees montrent des ecarts importants pour nombreux de ces composants de carburant de substitution, motivant leur inclusion dans cette etude. Ainsi, la vitesse de flamme laminaire a ete egalement obtenus pour trois candidats de composants substitutus pour la carburant d'aviation: n-decane, methylcyclohexane et toluene, qui sont representatifs des composants d'alcane, cycloalcane et aromatiques du carburant d'aviation conventionnel, respectivement. Les resultats pour les composants purs de substitution ont ete utilises pour generer un melange adequat de substitution pour les melanges de carburant biologiques. Les resultats de ce travail resout les conflits entre les donnees de vitesse de flamme laminaire pour les composants de substitution, qui est essentiel pour le developpement des mecanismes de cinetiques chimiques et contribue a la modelisation des carburants vide substitution de la combustion. Les vitesses de flamme laminaire des melanges de carburants biologiques sont comparees a Jet A-1 a dierents rapports d'equivalence. Les melanges biologiques comportent de facon similaire a Jet A-1 pour les niveaux de melange faible a modere, mais montrent un important ecart autrement.
Kim, Hyea. "High energy density direct methanol fuel cells." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37106.
Повний текст джерела陳榮均 and Rongjun Chen. "Utilization of upland phytomass for fuel." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B29913482.
Повний текст джерелаBradley, 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.
Повний текст джерелаCommittee 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.
de, la Torre Jorge. "FUEL CELLS: HYPE OR REALITY? OVERVIEW OF FUEL CELL TECHNOLOGIES FEASIBILITY STATUS WITH AN EMPHASIS ON AUTOMOTIVE AND RESIDENTIAL PROTON EXCHANGE MEMBRANE FUEL CELLS (PEMFCs)." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1309540374.
Повний текст джерелаTajudeen, Ibrahim. "Essays on energy efficiency and fuel subsidy reforms." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/essays-on-energy-efficiency-and-fuel-subsidy-reforms(3066138a-809f-4a4f-aeaf-a1e5f6087891).html.
Повний текст джерелаTsay, David 1967. "Feasibility study of fuel cell residential energy stations." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/17002.
Повний текст джерелаIncludes bibliographical references.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Electricity provisioning has historically satisfied demand by centralized generation and pervasive distribution through an extensive transmission and distribution network. Once demand increases beyond a fixed threshold, however, the capacity of the generation, transmission and distribution can become crippled and the mal-effects of periodic brownouts and skyrocketing prices may ripple through the nationwide grid system. The traditional response to this constraint is to build new facilities. However, an alternative approach getting increased attention is to satisfy local demands by incrementally investing in distributed generation. Distributed generation facilities can be strategically sited to deliver combined heat and power (CHP) near the source of consumption at unprecedented efficiencies. Presently the distributed generation market remains largely focused on industrial and commercial peak-shaving and emergency back-up applications. The residential market is a frontier yet to be tackled. Residential electricity tariffs, in contrast, are the highest among all sectors and household users are responsible for a large proportion of the peak demand and usage growth. For residential self-generation needs, fuel cell technology is foreseen to be an ideal solution stemming from its low noise, negligible pollution and high efficiency operation. This thesis will assess the market viability of fuel cell technologies for residential distributed generation application. More specifically, the study will consider single household (5 kW) proton exchange membrane fuel cells versus hybrid solid oxide fuel cell with integrated gas turbine (10 kW) technologies for the household end-use and determine the competitiveness and sustainability of each choice.
by David Tsay.
S.M.M.O.T.
Gustafsson, Filip. "Waste heat recovery systems : Fuel energy utilisation for a marine defence platform." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19681.
Повний текст джерелаDenna rapport är ett examensarbete för BTH i samarbete med företaget Saab Kockums AB. Arbetet utforskar möjligheterna att möta framtida miljömässiga och ekonomiska krav genom att låta fartyg minska sin bränsleförbrukning. System för återvinning av spillvärme (WHRS) fångar upp värmeenergi som vanligtvis kyls ner eller släpps ut i naturen och för den tillbaka till systemet. Termisk energilagring (TES) är metoder för lagring av värme som gör det möjligt att använda termisk energi när det behövs. Vissa applikationer av TES är säsongslagring, där sommarvärme lagras för användning på vintern eller när is produceras under vintern och används för kylning senare. Syftet med denna studie är att undersöka möjligheterna att utnyttja ett fartygs spillvärme genom att omvandla termisk energi till elektrisk energi. Detta examensarbete syftar också till att undersöka förhållandena för hur SaltX Technology’s nanobelagda salt kan användas som en potentiell lösning för lagring av termisk energi. Inledningsvis undersöktes WHRS:s förväntningar och krav i en funktionsanalys. Fortsättningsvis bestod metoden av en kombination av en litteraturstudie och dialoger med intressenter. Litteraturstudien användes som ett verktyg för att identifiera, välja och studera intressanta koncept baserade på vetenskapligt beprövade fakta. Dialoger hölls som ett komplement till litteraturstudien för att hitta information. Studien visade att en organisk Rankine-cykel har den högsta verkningsgraden för låg-medelhög temperatur och därför är bäst lämpad för att återvinna energi buren i kylvattnet samt att en ång-Rankine-cykel är bäst lämpad för att utnyttja energin från avgaserna för direkt användning. Studien erhöll förhållanden för termisk energilagring i salt samt viktiga parametrar för systemet. Slutligen visade resultatet att en Stirlingmotor är det mest effektiva konceptet för omvandling av lagrad energi till elektrisk energi. Slutsatserna är att det finns stora möjligheter för återvinning av restvärme på marina försvarsplattformar. En Stirlingmotor för energiomvandling i kombination med termisk energilagring visar störst potential som ett framtida system för återvinning av spillvärme på denna typen av plattformar.
Hedström, Lars. "Fuel Cells and Biogas." Doctoral thesis, KTH, Energiprocesser, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-13219.
Повний текст джерелаQC20100708
McHenry, John Carl Izaak. "The Challenges of Biofuels in Ohio: From the Perspective of Small-Scale Producers." Ohio : Ohio University, 2008. http://www.ohiolink.edu/etd/view.cgi?ohiou1197926303.
Повний текст джерелаBuche, Silvain. "Polymer electrolyte fuel cell diagnostics." Thesis, University of Bath, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285318.
Повний текст джерелаArespacochaga, Santiago Nicolás de. "Sewage biogas energy valorization via solid oxide fuel cells." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/345237.
Повний текст джерелаEl subministrament d'energia sostenible i segur és un dels reptes més rellevants per a les properes generacions, on la dependència actual en les fonts d'energia basades en combustibles fòssils haurà de ser substituïda per l'autosuficiència i l'ús dels recursos energètics renovables. El tractament convencional d'aigües residuals urbanes és un procés que consumeix grans quantitats d'energia, o més específicament, grans quantitats d'electricitat. En aquest sentit, l'energia a les Estacions Depuradores d'Aigües Residuals s'ha de tractar no només en termes de reducció del consum, sinó també en termes de producció d'energia renovable a partir del biogàs. Avui en dia, no és possible assolir l'autosuficiència energètica a causa de les baixes eficiències elèctriques dels sistemes de cogeneració convencionals alimentats per biogàs. Tot i això, en els darrers anys, la tecnologia de les piles de combustible està apareixent en escena, oferint una millor eficiència elèctrica i una reducció en l'impacte ambiental. La valorització energètica de biogàs en piles de combustible combina una tecnologia d'elevada eficiència per a la generació d'energia (la pila de combustible), amb l'ús d'un combustible renovable (el biogàs). S'ha de tenir en compte que el biogàs brut conté una àmplia gamma de contaminants, especialment compostos de sofre i de silici orgànic (siloxans), que comporten un risc operatiu per al correcte funcionament de les piles de combustible d'òxid sòlid. Per tant, s'ha d'instal·lar una etapa d'acondicionament i neteja exhaustiu del biogàs abans que es pugui introduïr a la pila de combustible. D'altra banda, la monitorització de les concentracions de siloxans presenta discrepàncies en relació al procediment òptim per al seu mostreig i en la tècnica analítica de quantificació; dificultant d'aquesta manera el disseny i la operació de les tecnologies d'eliminació d'aquests compostos. Aquest treball es centra en l'estudi i validació de tota la línia de valorització energètica, incloent el sistema de tractament de biogàs i la operació de la pila de combustible. S'ha estudiat la integració de tecnologies de dessulfuració biològica de baix cost i de processos d'adsorció fisicoquímica amb una pila de combustible d'òxid sòlid en una planta pilot industrial de 2.8 kWe instal·lada en una Estació Depuradora d'Aigües Residuals a Catalunya (Mataró). Els resultats experimentals han demostrat que les tecnologies de tractament de biogàs són capaces d'assolir els exigents nivells de qualitat de 0.5 ppmv S i 1 mg Si/Nm3 tant en el curt com en el llarg plaç. Per altra part, s'ha realitzat una estudi tècnic-econòmic comparatiu entre les piles de combustible (d'òxid sòlid i de carbonat fos) amb els motors de combustió interna i les microturbines per a diferents tamanys de planta i composicions del biogàs. D'aquesta manera, s'ha confirmat el paper important que poden jugar les piles de combustible en l'assoliment d'un tractament d'aigües residuals autosuficient; particularment en plantes de tamany petit i mitjà. Avui en dia, els projectes de valorització energètica de biogàs a través de piles de combustible encara s'han de justificar per raons ambientals ja que es requereixen millores tant en el rendiment tècnic com en els costos d'inversió. No obstant, aquesta tesi demostra que aquesta tecnologia de pròxima generació serà econòmicament viable en el curt termini i podrà competir amb les tecnologies convencionals. La investigació col·laborativa entre productors de biogàs, proveïdors de tecnologies de tractament i fabricants de piles de combustible serà imprescindible durant els propers anys per tal que la tecnologia pugui convertir-se en una realitat en el sector del tractament d'aigües residuals urbanes.
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.
Повний текст джерелаQC 20151210
Zhou, Yang. "Predictive energy management for fuel cell hybrid electric vehicle." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCA020.
Повний текст джерелаFuel cell electric vehicles have been widely deemed as the promising substitution against traditional internal combustion engine-based vehicles. To reduce the vehicular operating costs, a practical solution at current stage is to efficiently and healthily use the hybrid propulsion systems. Such task can be fulfilled via reliable energy management strategies, which coordinate the outputs of multiple energy sources to satisfy the vehicular power request.In such context, this PhD thesis intends to devise intelligent energy management strategies for fuel cell hybrid electric vehicles. Compared to existing control strategies, this thesis especially focuses on the possibility of combining the forecasted driving information with the real-time optimal control framework. Several driving prediction techniques are developed to estimate the upcoming driving conditions, like the vehicle’s speed, battery state-of-charge reference and driving pattern information. Thereafter, model predictive control is selected for real-time decision-making, since it is capable of handling the time-varying constrained systems and is convenient for the integration of driving predictive information. Based on the forecasted results and model predictive control, several predictive energy management strategies are established, aiming at saving hydrogen consumption and enhancing fuel cell durability versus benchmark strategies.Both offline simulation and software-in-the-loop testing have verified the functionality and real-time suitability of the proposed strategies
Shcherbak, V. V. "The influence of fuel and energy companies to environment." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45219.
Повний текст джерелаKhallat, 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.
Повний текст джерелаPh. D.
Laguna, Bercero Miguel A. "Hydrogen and fuel cells: an efficient and clean energy alternative." Revista de Química, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/100084.
Повний текст джерелаThe most important technological development in the coming decades will be the use of hydrogen as an alternative to the widely used fossil fuels. By the use of fuel cell based technologies, it will be feasible to produce energy systems that will be more efficient than the current ones and that will also be environmentally friendly.
Sinuka, Yonwaba. "Performance testing of a diesel engine running on varying blends of jatropha oil, waste cooking oil and diesel fuel." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2436.
Повний текст джерелаThe high cost of fossil fuels and the fact that the world has arguably reached its peak oil production, has driven the need to seek alternative fuel sources. The main objective of the current study is to determine the performance of a laboratory-mounted diesel engine when fuelled with varying laboratory prepared biofuel and biodiesel and whether the advancement of the injection timing parameters will improve the engine power output and improve the smoke effect of these different fuel blends. The laboratory prepared biofuels used in this project range from 100% bio-fuel (BF100) to 50%, 30% and 10% biodiesel blends (BF50, BF30 and BF10, respectively). It should be noted that these blends are not commercially available, since they were blended in the laboratory specifically for these tests. The overall results of the study show that there is a distinct opportunity for using certain bio-fuel blends in specific applications as the power outputs are no more than one quarter less than that of base diesel. Concomitantly, the smoke opacity in all of the blends is lower than that of base diesel, which is a significant benefit in terms of their overall air emissions.
Tatum, Shaun Wesley Jackson John D. "The ethanol market an econometric inquiry into the market for E85 /." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Fall%20Theses/Tatum_Shaun_38.pdf.
Повний текст джерелаWillmot, Peter. "Fuel from straw : an in-field briquetting process." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/19382.
Повний текст джерелаエドアード, ラマス ホルヘ, and Jorge Eduardo Lamas de Anda. "Conceptual study on the energy independence of fuel cell cogeneration systems using solar energy." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12981850/?lang=0, 2016. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12981850/?lang=0.
Повний текст джерелаThis thesis presents a thorough analysis on energy supply systems using solar energy and fuel cell cogeneration systems that can operate reliably and independently from the main power grid. A mathematical model to maximize fuel independence for hydrogen micro-grids is developed and simulated for various scenarios in Japanese communities. The viability of implementing such systems is assessed with a review of available hydrogen supply channels, and a study case for a remote Japanese island of medium size. An economic analysis of this study suggests that hydrogen micro-grids are economically competitive for energy supply in remote areas where oil prices are high.
博士(工学)
Doctor of Philosophy in Engineering
同志社大学
Doshisha University
Al, Nur Maglub. "Automobile fuel efficiency and gasoline demand : models and inter-country comparisons." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333056.
Повний текст джерелаFapetu, Segun. "Enhancing energy recovery from industrial wastewater using microbial fuel cells." Thesis, University of Westminster, 2018. https://westminsterresearch.westminster.ac.uk/item/q9480/enhancing-energy-recovery-from-industrial-wastewater-using-microbial-fuel-cells.
Повний текст джерелаZhang, Yusheng. "Development of a bench scale single batch biomass to liquid fuel facility." Thesis, University of Fort Hare, 2014. http://hdl.handle.net/10353/811.
Повний текст джерелаFerreira, S. B. "Thermoeconomic analysis and optimisation of biomass fuel gas turbines." Thesis, Cranfield University, 2002. http://hdl.handle.net/1826/3423.
Повний текст джерелаWaite, Ian Vowles. "Refuse-derived fuel for electricity generation in the UK." Thesis, London South Bank University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323891.
Повний текст джерелаGammon, Rupert. "The integration of hydrogen energy storage with renewable energy systems." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/7847.
Повний текст джерелаDonovan, D. G. "Industrial response to wood-fuel scarcity in the hill region of Nepal." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317808.
Повний текст джерелаKhorassani, Nader James. "The Dragon's Fuel: Developing Chinese-Iranian Cooperation." Thesis, Boston College, 2010. http://hdl.handle.net/2345/1342.
Повний текст джерелаIn recent years, economic and political cooperation between China and Iran has deepened to levels never before reached. This thesis discusses the potentially far reaching implications the development in relations between China and Iran poses for controlling nuclear proliferation, international energy security, and the role the US plays in Middle Eastern and East Asian power politics. Monitoring the Chinese-Iranian relationship is thus important to the US, as its own influence across the globe could potentially be reduced as a result of cooperation between these two nations. With China newly confident following the global financial crisis of 2008, it appears that despite US pressure to stop, China is continuing to deepen its cooperation with Iran in pursuit of its own national interests
Thesis (BA) — Boston College, 2010
Submitted to: Boston College. College of Arts and Sciences
Discipline: Political Science Honors Program
Discipline: Political Science
Rismani-Yazdi, Hamid. "Bioconversion of cellulose into electrical energy in microbial fuel cells." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1211313869.
Повний текст джерелаSanchez, Antonio. "Energy management in electric systems fed by fuel cell stacks." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00590217.
Повний текст джерелаLi, Huan. "Energy consumption minimization strategy for fuel cell hybrid electric vehicles." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCA034/document.
Повний текст джерелаGlobal warming, environment pollution and exhaustion of petroleum energies have risen their attention of the humanity over the world. Fuel cell hybrid electric vehicle (FCHEV) taking hydrogen as fuel and have zero emission, is thought by public and private organisms as one of the best ways to solve these problems. This PhD dissertation consider a FCHEV with three power sources: fuel cell, battery and supercapacitor, which increases the difficult to design an energy management strategy (EMS) to split the power between the different power sources.Among the EMS available in the current literature, the Equivalent consumption minimization strategy (ECMS) was selected because it allows a local optimization without rely on prior knowledge of driving condition while giving optimal results.Due to low energy density of supercapacitor, its equivalent hydrogen consumption is neglected in most bibliographic references, which not only counter to the aim of minimizing whole hydrogen consumption but also increase the complication of EMS due to the need of an additional EMS to calculate supercapacitor power demand. Thus, a sequential quadratic programming ECMS (SECMS) strategy is proposed to consider energy cost of all three power sources into the objective function. A rule based control strategy (RBCS) and hybrid strategy (HEOS) are also designed in order to to be compared with SECMS. Degradation of energy sources represents a major challenge for the stability of the developed SECMS system. So, based on online estimating state of heath of fuel cell and battery, an adaptive ECMS (AECMS) has been designed through adjusting the equivalent factor and dynamical change rate of fuel cell. The simulation results show that the AECMS can ensure the charge sustenance of battery and the increase of fuel cell durability.To validate the proposed energy management algorithms and the numerical models an exerimental test bench has been built around the real time interface DSPACE. The comparison of the simulation and experimental results showed that the proposed SECMS is operated at around maximum efficiency, supercapacitor supplies peak power, battery works as the energy buffer. It has been proved that the neglect of supercapacitor equivalent hydrogen consumption in ECMS leads to not optimal operation. Compared with RBCS and HEOS, SECMS has least hydrogen consumption and most stable fuel cell current
Juma, Calestous. "Evolutionary technological change : the case of fuel ethanol in developing countries." Thesis, University of Sussex, 1986. http://sro.sussex.ac.uk/id/eprint/79463/.
Повний текст джерелаSchneider, Kenneth. "Photo-microbial fuel cells." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675704.
Повний текст джерелаZhou, Yu. "Energy Harvesting Using a Thermoelectric Generator and Generic Rule-based Energy Management." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1196802707.
Повний текст джерелаChen, Dayi. "Nickel-based anodic electrocatalysts for fuel cells and water splitting." Thesis, The University of Utah, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10157943.
Повний текст джерелаOur world is facing an energy crisis, so people are trying to harvest and utilize energy more efficiently. One of the promising ways to harvest energy is via solar water splitting to convert solar energy to chemical energy stored in hydrogen. Another of the options to utilize energy more efficiently is to use fuel cells as power sources instead of combustion engines. Catalysts are needed to reduce the energy barriers of the reactions happening at the electrode surfaces of the water-splitting cells and fuel cells. Nickel-based catalysts happen to be important nonprecious electrocatalysts for both of the anodic reactions in alkaline media. In alcohol fuel cells, nickel-based catalysts catalyze alcohol oxidation. In water splitting cells, they catalyze water oxidation, i.e., oxygen evolution. The two reactions occur in a similar potential range when catalyzed by nickel-based catalysts. Higher output current density, lower oxidation potential, and complete substrate oxidation are preferred for the anode in the applications.
In this dissertation, the catalytic properties of nickel-based electrocatalysts in alkaline medium for fuel oxidation and oxygen evolution are explored. By changing the nickel precursor solubility, nickel complex nanoparticles with tunable sizes on electrode surfaces were synthesized. Higher methanol oxidation current density is achieved with smaller nickel complex nanoparticles. DNA aggregates were used as a polymer scaffold to load nickel ion centers and thus can oxidize methanol completely at a potential about 0.1 V lower than simple nickel electrodes, and the methanol oxidation pathway is changed. Nickel-based catalysts also have electrocatalytic activity towards a wide range of substrates. Experiments show that methanol, ethanol, glycerol and glucose can be deeply oxidized and carbon-carbon bonds can be broken during the oxidation. However, when comparing methanol oxidation reaction to oxygen evolution reaction catalyzed by current nickel-based catalysts, methanol oxidation suffers from high overpotential and catalyst poisoning by high concentration of substrates, so current nickel-based catalysts are more suitable to be used as oxygen evolution catalysts. A photoanode design that applies nickel oxides to a semiconductor that is incorporated with surface-plasmonic metal electrodes to do solar water oxidation with visible light is proposed.
Raji, Atanda Kamoru. "Modelling and development of fuel cell off grid power converter system." Thesis, [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1039&context=td_cput.
Повний текст джерелаTroughton, Gavin L. "Anodes for the direct methanol fuel cell." Thesis, University of Newcastle Upon Tyne, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335195.
Повний текст джерелаSaunders, Gary J. "Reactions of hydrocarbons in zirconia fuel cells." Thesis, University of Birmingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288890.
Повний текст джерелаZhang, Taoju. "Possibilities of Alternative Vehicle Fuels : a literature review." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19896.
Повний текст джерелаStill, Michael Joseph. "All-air moisture and energy recovery system for fuel cell exhaust." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17051.
Повний текст джерелаLott, Tawney. "A political economy analysis of liquid fuel production incentives in South Africa." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/27233.
Повний текст джерелаPsofogiannakis, George. "A mathematical model for a direct propane phosphoric acid fuel cell." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26424.
Повний текст джерелаWang, Yan. "Effects of fuel cost uncertainty on optimal energy flows in U.S." [Ames, Iowa : Iowa State University], 2007.
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