Gotowe bibliografie tematyczne / Proton exchange membrane fuel cells Heat

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Gotowa bibliografia na temat „Proton exchange membrane fuel cells Heat”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 9 lutego 2022

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Artykuły w czasopismach na temat "Proton exchange membrane fuel cells Heat"

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Ramousse, Julien, Olivier Lottin, Sophie Didierjean i Denis Maillet. "Heat sources in proton exchange membrane (PEM) fuel cells". Journal of Power Sources 192, nr 2 (15.07.2009): 435–41. http://dx.doi.org/10.1016/j.jpowsour.2009.03.038.

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Sun, Shi Mei, Yao Shi i Wei Liu. "The Efficient Thermal Management of Proton Exchange Membrane Fuel Cells". Applied Mechanics and Materials 423-426 (wrzesień 2013): 483–87. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.483.

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According to the principle of heat transfer to set up corresponding model of lumped parameters, and calculate the heat production of proton exchange membrane fuel cell. Under the steady state condition, with the help of numerical simulation and calculation in Sinda/Fluent,heat which from the internal of battery can be diffused through the heat pipe,especially dealing with issues such as local overheating. The result of this research shows that the use of the technique of liquid phase change heat transfer in the close room can have a high heat transfer efficiency, also start quickly and isothermal performance is good, the finally , its control is simple and it is very suitable for heat removal of PEMFC battery pack.
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Li, Qinghe, Zhiqiang Liu, Yi Sun, Sheng Yang i Chengwei Deng. "A Review on Temperature Control of Proton Exchange Membrane Fuel Cells". Processes 9, nr 2 (27.01.2021): 235. http://dx.doi.org/10.3390/pr9020235.

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This paper provides a comprehensive review of the temperature control in proton exchange membrane fuel cells. Proton exchange membrane (PEM) fuel cells inevitably emit a certain amount of heat while generating electricity, and the fuel cell can only exert its best performance in the appropriate temperature range. At the same time, the heat generated cannot spontaneously keep its temperature uniform and stable, and temperature control is required. This part of thermal energy can be classified into two groups. On the one hand, the reaction heat is affected by the reaction process; on the other hand, due to the impedance of the battery itself to the current, the ohmic polarization loss is caused to the battery. The thermal effect of current generates Joule heat, which is manifested by an increase in temperature and a decrease in battery performance. Therefore, it is necessary to design and optimize the battery material structure to improve battery performance and adopt a suitable cooling system for heat dissipation. To make the PEM fuel cell (PEMFC) universal, some extreme situations need to be considered, and a cold start of the battery is included in the analysis. In this paper, the previous studies related to three important aspects of temperature control in proton exchange membrane fuel cells have been reviewed and analyzed to better guide thermal management of the proton exchange membrane fuel cell (PEMFC).
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Bapat, Chaitanya J., i Stefan T. Thynell. "Anisotropic Heat Conduction Effects in Proton-Exchange Membrane Fuel Cells". Journal of Heat Transfer 129, nr 9 (26.07.2006): 1109–18. http://dx.doi.org/10.1115/1.2712478.

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The focus of this work is to study the effects of anisotropic thermal conductivity and thermal contact conductance on the overall temperature distribution inside a fuel cell. The gas-diffusion layers and membrane are expected to possess an anisotropic thermal conductivity, whereas a contact resistance is present between the current collectors and gas-diffusion layers. A two-dimensional single phase model is used to capture transport phenomena inside the cell. From the use of this model, it is predicted that the maximum temperatures inside the cell can be appreciably higher than the operating temperature of the cell. A high value of the in-plane thermal conductivity for the gas-diffusion layers was seen to be essential for achieving smaller temperature gradients. However, the maximum improvement in the heat transfer characteristics of the fuel cell brought about by increasing the in-plane thermal conductivity is limited by the presence of a finite thermal contact conductance at the diffusion layer/current collector interface. This was determined to be even more important for thin gas-diffusion layers. Anisotropic thermal conductivity of the membrane, however, did not have a significant impact on the temperature distribution. The thermal contact conductance at the diffusion layer/current collector interface strongly affected the temperature distribution inside the cell.
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Liu, Jia Xing, Hang Guo, Fang Ye, De Cai Qiu i Chong-Fang Ma. "INTERFACIAL PHENOMENA AND HEAT TRANSFER IN PROTON EXCHANGE MEMBRANE FUEL CELLS". Interfacial Phenomena and Heat Transfer 3, nr 3 (2015): 259–301. http://dx.doi.org/10.1615/interfacphenomheattransfer.2016014779.

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Wang, Qianqian, Bing Li, Daijun Yang, Haifeng Dai, Jim P. Zheng, Pingwen Ming i Cunman Zhang. "Research progress of heat transfer inside proton exchange membrane fuel cells". Journal of Power Sources 492 (kwiecień 2021): 229613. http://dx.doi.org/10.1016/j.jpowsour.2021.229613.

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Sun, Shi Mei, Wei Liu i Shi Yao. "Thermal Simulation of Cooling Channels in Proton Exchange Membrane Fuel Cell". Applied Mechanics and Materials 423-426 (wrzesień 2013): 2091–97. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.2091.

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Fuel cells heat dissipation and cooling is a vital part of PEMFC heat management. This paper used pure water as the coolant to control the temperature distribution inside fuel cells. Established cooling channels geometrical model and simulated the temperature distribution in the steady state by using software SINDA/FLUINT. Then discusses the effects of cooling channels branch quantity, diameter and coolant velocity on fuel cell internal temperature distribution, concludes that multi-branch, large diameter pipes and low-velocity coolant make PEMFC work at best conditions.
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Cho, Son Ah, Pil Hyong Lee, Sang Seok Han i Sang Soon Hwang. "Heat transport characteristics of flow fields in proton exchange membrane fuel cells". Journal of Power Sources 178, nr 2 (kwiecień 2008): 692–98. http://dx.doi.org/10.1016/j.jpowsour.2007.09.057.

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Nguyen, Trung V., i Ralph E. White. "A Water and Heat Management Model for Proton‐Exchange‐Membrane Fuel Cells". Journal of The Electrochemical Society 140, nr 8 (1.08.1993): 2178–86. http://dx.doi.org/10.1149/1.2220792.

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Das, Sarit K., i Annasaheb S. Bansode. "Heat and Mass Transport in Proton Exchange Membrane Fuel Cells—A Review". Heat Transfer Engineering 30, nr 9 (sierpień 2009): 691–719. http://dx.doi.org/10.1080/01457630802677997.

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Rozprawy doktorskie na temat "Proton exchange membrane fuel cells Heat"

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Nomnqa, Myalelo Vuyisa. "Simulation and optimisation of a high temperature polymer electrolyte membrane fuel cell stack for combined heat and power". Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/880.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2011
High temperature polymer electrolyte membrane fuel cells (PEMFC) operating between 120-180 oC are currently of much research attention. The acid doped polybenzimidazole (PBI) membranes electrolyte are known for their tolerance to relatively high levels of carbon monoxide impurity in the feed. Most fuel cell modelling are theoretical in nature and are solved in commercial CFD platforms such as Fluent. The models require a lot of time to solve and are not simple enough to be used in complex systems such as CHP systems. This study therefore, focussed on developing a simple but yet accurate model of a high temperature PEMFC for a CHP system. A zero dimensional model for a single cell was developed and implemented in Engineering Equations Solver (EES) environment to express the cell voltage as a function of current density among others. Experimental results obtained from literature were used to validate and improve on the model. The validated models were employed for the simulation of the stack performance to investigate the effects of temperature, pressure, anode stoichiometry and the level of CO impurity in the synthesis gas, on the cell potential and overall performance. Good agreement was obtained from the simulation results and experimental data. The results showed that increasing temperature (up to 180oC) and acid doping level have positive effects on the cell performance. The results also show that the cell can operate with a reformate gas containing up to 2% CO without significant loss of cell voltage at elevated temperatures. The single cell model was extended to a 1 kWe high temperature PEMFC stack and micro-CHP system. The stacks model was validated with experimental data obtained from a test station. The model was used to investigate the performance of PEMFC and CHP system by using uncertainty propagation. The highest combined cogeneration system efficiency of 87.3% is obtained with the corresponding electrical and thermal efficiencies are 41.3% and 46 % respectively. The proposed fuel processing subsystem provides an adequate rate of CH4 conversion and acceptable CO-level, making it appropriate for integration with an HT PEMFC stack. In the steam methane reformer 97% of CH4 conversion is achieved and the water gas shift reactors achieve about 98% removal of CO.
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Radhakrishnan, Arjun. "Thermal conductivity measurement of gas diffusion layer used in PEMFC /". Online version of thesis, 2009. http://hdl.handle.net/1850/10839.

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Alan, Dunlavy Choe Song-Yul. "Dynamic modeling of two-phase heat and vapor transfer characteristics in a gas-to-gas membrane humidifier for use in automotive PEM fuel cells". Auburn, Ala., 2009. http://hdl.handle.net/10415/1951.

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Nomnqa, Myalelo Vuyisa. "Design of a domestic high temperature proton exchange membrane fuel cell cogeneration system : modelling and optimisation". Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2574.

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Thesis (DTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.
Fuel cells are among power generation technologies that have been proven to reduce greenhouse gas emissions. They have the potential of being one of the most widely used technologies of the 21st century, replacing conventional technologies such as gas turbines in stationary power supplies, internal combustion engines in transport applications and the lithium-ion battery in portable power applications. This research project concentrates on the performance analysis of a micro-cogeneration system based on a high temperatureproton exchange membrane (HT-PEM) fuel cell through modelling and parametric analysis. A model of a 1kWe micro-cogeneration system that consists of a HT-PEM fuel cell, a methane steam reformer (MSR) reactor, a water-gas-shift (WGS) reactor, heat exchangers and an inverter was developed. The model is coded/implemented in gPROMS Model Builder, an equation oriented modelling platform. The models predictions for the HTPEM fuel cell, MSR and WGS, and the whole system were validated against experimental and numerical results from literature. The validation showed that the HT-PEM fuel cell model was able to predict the performance of a 1kWe fuel cell stack with an error of less than 6.4%. The system model is rstly used in a thermodynamic analysis of the fuel processor for a methane steam reforming process and investigated in terms of carbon monoxide produced. The combustor fuel and equivalence ratios were shown to be critical decision variables to be considered in order to keep the carbon monoxide from the fuel processor at acceptable levels for the fuel cell stack.
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Ntsendwana, Bulelwa. "Advanced low temperature metal hydride materials for low temperature proton exchange membrane fuel cell application". Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8494_1307431585.

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Energy is one of the basic needs of human beings and is extremely crucial for continued development of human life. Our work, leisure and our economic, social and physical welfare all depend on the sufficient, uninterrupted supply of energy. Therefore, it is essential to provide adequate and affordable energy for improving human welfare and raising living standards. Global concern over environmental climate change linked to fossil fuel consumption has increased pressure to generate power from renewable sources [1]. Although substantial advances in renewable energy technologies have been made, significant challenges remain in developing integrated renewable energy systems due primarily to mismatch between load demand and source capabilities [2]. The output from renewable energy sources such as photo-voltaic, wind, tidal, and micro-hydro fluctuate on an hourly, daily, and seasonal basis. As a result, these devices are not well suited for directly powering loads that require a uniform and uninterrupted supply of input energy.

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McGee, Seán. "Thermal energy management and chemical reaction investigation of micro-proton exchange membrane fuel cell and fuel cell system using finite element modelling". Thesis, KTH, Kraft- och värmeteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173001.

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Fuel cell systems are becoming more commonplace as a power generation method and are being researched, developed, and explored for commercial use, including portable fuel cells that appear in laptops, phones, and of course, chargers. This thesis examines a model constructed on inspiration from the myFC PowerTrekk, a portable fuel cell charger, using COMSOL Multiphysics, a finite element analysis software. As an educational tool and in the form of zero-dimensional, two-dimensional, and three-dimensional models, an investigation was completed into the geometric construction, air conditions and compositions, and product materials with a best case scenario completed that summarizes the results identified. On the basis of the results of this research, it can be concluded that polyoximetylen and high-density polyethylene were considered as possible materials for the majority of the product, though a more thorough investigation is needed. Air flow of above 10 m/s, air water vapour mass fraction below 50% and initial temperature between 308K and 298K was considered in this best scenario. Suggestions on future expansions to this project are also given in the conclusion.
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Tichagwa, Anesu. "Micro combined heat and power management for a residential system". Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/16914.

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Fuel cell technology has reached commercialisation of fuel cells in application areas such as residential power systems, automobile engines and driving of industrial manufacturing processes. This thesis gives an overview of the current state of fuel cell-based technology research and development, introduces a μCHP system sizing strategy and proposes methods of improving on the implementation of residential fuel cell-based μCHP technology. The three methods of controlling residential μCHP systems discussed in this thesis project are heat-led, electricity-led and cost-minimizing control. Simulations of a typical HT PEMFC -based residential μCHP unit are conducted using these control strategies. A model of a residential μCHP system is formulated upon which these simulated tests are conducted. From these simulations, equations to model the costs of running a fuel-cell based μCHP system are proposed. Having developed equations to quantify the running costs of the proposed μCHP system a method for determining the ideal size of a μCHP system is developed. A sizing technique based on industrial CHP sizing practices is developed in which the running costs and capital costs of the residential μCHP system are utilised to determine the optimal size of the system. Residential thermal and electrical load profile data of a typical Danish household are used. Having simulated the system a practical implementation of the power electronics interface between the fuel cell and household grid is done. Two topologies are proposed for the power electronics interface a three-stage topology and a two-stage topology. The efficiencies of the overall systems of both topologies are determined. The system is connected to the grid so the output of each system is phase-shifted and DC injection, harmonic distortion, voltage range and frequency range are determined for both systems to determine compliance with grid standards. Deviations between simulated results and experimental results are recorded and discussed and relevant conclusions are drawn from these.
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Ion, Mihaela Florentina. "Proton transport in proton exchange membrane fuel cells /". free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164514.

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Ergun, Dilek. "High Temperature Proton Exchange Membrane Fuel Cells". Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610803/index.pdf.

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It is desirable to increase the operation temperature of proton exchange membrane fuel cells above 100oC due to fast electrode kinetics, high tolerance to fuel impurities and simple thermal and water management. In this study
the objective is to develop a high temperature proton exchange membrane fuel cell. Phosphoric acid doped polybenzimidazole membrane was chosen as the electrolyte material. Polybenzimidazole was synthesized with different molecular weights (18700-118500) by changing the synthesis conditions such as reaction time (18-24h) and temperature (185-200oC). The formation of polybenzimidazole was confirmed by FTIR, H-NMR and elemental analysis. The synthesized polymers were used to prepare homogeneous membranes which have good mechanical strength and high thermal stability. Phosphoric acid doped membranes were used to prepare membrane electrode assemblies. Dry hydrogen and oxygen gases were fed to the anode and cathode sides of the cell respectively, at a flow rate of 0.1 slpm for fuel cell tests. It was achieved to operate the single cell up to 160oC. The observed maximum power output was increased considerably from 0.015 W/cm2 to 0.061 W/cm2 at 150oC when the binder of the catalyst was changed from polybenzimidazole to polybenzimidazole and polyvinylidene fluoride mixture. The power outputs of 0.032 W/cm2 and 0.063 W/cm2 were obtained when the fuel cell operating temperatures changed as 125oC and 160oC respectively. The single cell test presents 0.035 W/cm2 and 0.070 W/cm2 with membrane thicknesses of 100 µ
m and 70 µ
m respectively. So it can be concluded that thinner membranes give better performances at higher temperatures.
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Oyarce, Alejandro. "Electrode degradation in proton exchange membrane fuel cells". Doctoral thesis, KTH, Tillämpad elektrokemi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133437.

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The topic of this thesis is the degradation of fuel cell electrodes in proton exchange membrane fuel cells (PEMFCs). In particular, the degradation associated with localized fuel starvation, which is often encountered during start-ups and shut-downs (SUs/SDs) of PEMFCs. At SU/SD, O2 and H2 usually coexist in the anode compartment. This situation forces the opposite electrode, i.e. the cathode, to very high potentials, resulting in the corrosion of the carbon supporting the catalyst, referred to as carbon corrosion. The aim of this thesis has been to develop methods, materials and strategies to address the issues associated to carbon corrosion in PEMFC.The extent of catalyst degradation is commonly evaluated determining the electrochemically active surface area (ECSA) of fuel cell electrode. Therefore, it was considered important to study the effect of RH, temperature and type of accelerated degradation test (ADT) on the ECSA. Low RH decreases the ECSA of the electrode, attributed to re-structuring the ionomer and loss of contact with the catalyst.In the search for more durable supports, we evaluated different accelerated degradation tests (ADTs) for carbon corrosion. Potentiostatic holds at 1.2 V vs. RHE were found to be too mild. Potentiostatic holds at 1.4 V vs. RHE were found to induce a large degree of reversibility, also attributed to ionomer re-structuring. Triangle-wave potential cycling was found to irreversibly degrade the electrode within a reasonable amount of time, closely simulating SU/SD conditions.Corrosion of carbon-based supports not only degrades the catalyst by lowering the ECSA, but also has a profound effect on the electrode morphology. Decreased electrode porosity, increased agglomerate size and ionomer enrichment all contribute to the degradation of the mass-transport properties of the cathode. Graphitized carbon fibers were found to be 5 times more corrosion resistant than conventional carbons, primarily attributed to their lower surface area. Furthermore, fibers were found to better maintain the integrity of the electrode morphology, generally showing less degradation of the mass-transport losses. Different system strategies for shut-down were evaluated. Not doing anything to the fuel cell during shut-downs is detrimental for the fuel cell. O2 consumption with a load and H2 purge of the cathode were found to give around 100 times lower degradation rates compared to not doing anything and almost 10 times lower degradation rate than a simple air purge of the anode. Finally, in-situ measurements of contact resistance showed that the contact resistance between GDL and BPP is highly dynamic and changes with operating conditions.
Denna doktorsavhandling behandlar degraderingen av polymerelektrolytbränslecellselektroder. polymerelektrolytbränslecellselektroder. Den handlar särskilt om nedbrytningen av elektroden kopplad till en degraderingsmekanism som heter ”localized fuel starvation” oftast närvarande vid uppstart och nedstängning av bränslecellen. Vid start och stopp kan syrgas och vätgas förekomma samtidigt i anoden. Detta leder till väldigt höga elektrodpotentialer i katoden. Resultatet av detta är att kolbaserade katalysatorbärare korroderar och att bränslecellens livslängd förkortas. Målet med avhandlingen har varit att utveckla metoder, material och strategier för att både öka förståelsen av denna degraderingsmekanism och för att maximera katalysatorbärarens livslängd.Ett vanligt tillvägagångsätt för att bestämma graden av katalysatorns degradering är genom mätning av den elektrokemiskt aktiva ytan hos bränslecellselektroderna. I denna avhandling har dessutom effekten av temperatur och relativ fukthalt studerats. Låga fukthalter minskar den aktiva ytan hos elektroden, vilket sannolikt orsakas av en omstrukturering av jonomeren och av kontaktförlust mellan jonomer och katalysator.Olika accelererade degraderingstester för kolkorrosion har använts. Potentiostatiska tester vid 1.2 V mot RHE visade sig vara för milda. Potentiostatiska tester vid 1.4 V mot RHE visade sig däremot medföra en hög grad av reversibilitet, som också den tros vara orsakad av en omstrukturering av jonomeren. Cykling av elektrodpotentialen degraderade istället elektroden irreversibelt, inom rimlig tid och kunde väldigt nära simulera förhållandena vid uppstart och nedstängning.Korrosionen av katalysatorbäraren medför degradering av katalysatorn och har också en stor inverkan på elektrodens morfologi. En minskad elektrodporositet, en ökad agglomeratstorlek och en anrikning av jonomeren gör att elektrodens masstransportegenskaper försämras. Grafitiska kolfibrer visade sig vara mer resistenta mot kolkorrosion än konventionella kol, främst p.g.a. deras låga ytarea. Grafitiska kolfibrer visade också en förmåga att bättre bibehålla elektrodens morfologi efter accelererade tester, vilket resulterade i lägre masstransportförluster.Olika systemstrategier för nedstängning jämfördes. Att inte göra något under nedstängning är mycket skadligt för bränslecellen. Förbrukning av syre med en last och spolning av katoden med vätgas visade 100 gånger lägre degraderingshastighet av bränslecellsprestanda jämfört med att inte göra något alls och 10 gånger lägre degraderingshastighet jämfört med spolning av anoden med luft. In-situ kontaktresistansmätningar visade att kontaktresistansen mellan bipolära plattor och GDL är dynamisk och kan ändras beroende på driftförhållandena.

QC 20131104

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Książki na temat "Proton exchange membrane fuel cells Heat"

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Albarbar, Alhussein, i Mohmad Alrweq. Proton Exchange Membrane Fuel Cells. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70727-3.

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Gao, Fei. Proton exchange membrane fuel cells modeling. London: ISTE, 2011.

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Gao, Fei, Benjamin Blunier i Abdellatif Miraoui, red. Proton Exchange Membrane Fuel Cells Modeling. Hoboken, NJ USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118562079.

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Li, Hui. Proton exchange membrane fuel cells: Contamination and mitigation strategies. Boca Raton: Taylor & Francis, 2010.

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Li, Hui. Proton exchange membrane fuel cells: Contamination and mitigation strategies. Boca Raton: Taylor & Francis, 2010.

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Jemeï, Samir. Hybridization, Diagnostic and Prognostic of Proton Exchange Membrane Fuel Cells. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119563426.

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International Symposium on Proton Conducting Membrane Fuel Cells (2nd 1998). Proton conducting membrane fuel cells II: Proceedings of the Second International Symposium on Proton Conducting Membrane Fuel Cells II. Redaktorzy Gottesfeld Shimshon, Fuller Thomas Francis, Electrochemical Society. Energy technology Division., Electrochemical Society Battery Division i Electrochemical Society. Physical Electrochemistry Division. Pennington, New Jersey: Electrochemical Society, Inc., 1999.

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Herring, Andrew M. Fuel cell chemistry and operation. Washington, DC: American Chemical Society, 2010.

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Herring, Andrew M. Fuel cell chemistry and operation. Washington, DC: American Chemical Society, 2010.

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Herring, Andrew M. Fuel cell chemistry and operation. Washington, DC: American Chemical Society, 2010.

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Części książek na temat "Proton exchange membrane fuel cells Heat"

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Larminie, James, i Andrew Dicks. "Proton Exchange Membrane Fuel Cells". W Fuel Cell Systems Explained, 67–119. West Sussex, England: John Wiley & Sons, Ltd,., 2013. http://dx.doi.org/10.1002/9781118878330.ch4.

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Aricò, Antonino S., Vincenzo Baglio, Nicola Briguglio, Gaetano Maggio i Stefania Siracusano. "Proton Exchange Membrane Water Electrolysis". W Fuel Cells : Data, Facts and Figures, 343–56. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA., 2016. http://dx.doi.org/10.1002/9783527693924.ch34.

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Albarbar, Alhussein, i Mohmad Alrweq. "Introduction and Background". W Proton Exchange Membrane Fuel Cells, 1–8. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_1.

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Albarbar, Alhussein, i Mohmad Alrweq. "Proton Exchange Membrane Fuel Cells: Review". W Proton Exchange Membrane Fuel Cells, 9–29. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_2.

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Albarbar, Alhussein, i Mohmad Alrweq. "Design and Fundamental Characteristics of PEM Fuel Cells". W Proton Exchange Membrane Fuel Cells, 31–58. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_3.

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Albarbar, Alhussein, i Mohmad Alrweq. "Failure Modes and Mechanisms". W Proton Exchange Membrane Fuel Cells, 59–76. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_4.

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Albarbar, Alhussein, i Mohmad Alrweq. "Mathematical Modelling and Numerical Simulation". W Proton Exchange Membrane Fuel Cells, 77–100. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_5.

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Albarbar, Alhussein, i Mohmad Alrweq. "Experimental Set-Up, Results and Data Analysis". W Proton Exchange Membrane Fuel Cells, 101–23. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_6.

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Albarbar, Alhussein, i Mohmad Alrweq. "Guide to Modelling and Simulation". W Proton Exchange Membrane Fuel Cells, 125–46. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70727-3_7.

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Zhang, Junliang, i Shuiyun Shen. "Proton Exchange Membrane Fuel Cells (PEMFCs)". W Energy and Environment Research in China, 1–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-56070-9_1.

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Streszczenia konferencji na temat "Proton exchange membrane fuel cells Heat"

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Tenson, Tino Joe, i Rajesh Baby. "PERFORMANCE EVALUATION AND OPTIMIZATION OF PROTON EXCHANGE MEMBRANE FUEL CELLS". W Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017). Connecticut: Begellhouse, 2018. http://dx.doi.org/10.1615/ihmtc-2017.3060.

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Djilali, N., i T. Berning. "Computational Modelling and Simulation of Proton-Exchange Membrane Fuel Cells (Keynote)". W ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1560.

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Fuel cells (FC’s) are electrochemical devices that convert directly into electricity the chemical energy of reaction of a fuel (usually hydrogen) with an oxidant (usually oxygen from ambient air). The only by-products in a hydrogen fuel cell are heat and water, making this emerging technology the leading candidate for quiet, zero emission energy production. Several types of fuel cell are currently undergoing intense research and development for applications ranging from portable electronics and appliances to residential power generation and transportation. The focus of this lecture is Proton-Exchange Membrane Fuel Cells (PEMFC’s). An electrolyte consisting of a “solid” polymer membrane, low operating temperatures (typically below 90 °C) and a relatively simple design combine to make PEMFC’s particularly well suited to automotive and portable applications. The operation of a fuel cell relies on electrochemical reactions and an array of coupled transport phenomena, including multi-component gas flow, two phase-flow, heat and mass transfer, phase change and transport of charged species. The transport processes take place in variety of media, including porous gas diffusion electrodes and polymer membranes. The fuel cell environment makes it impossible to measure in-situ the quantities of interest to understand and quantify these phenomena, and computational modelling and simulations are therefore poised to play a central role in the development and optimization of fuel cell technology. We provide an overview of the role of various transport phenomena in fuel cell operation and some of the physical and computational modelling challenges they present. The processes will be illustrated through examples of multi-dimensional numerical simulations of Proton-Exchange Membrane Fuel Cells. We close with a perspective on some of the many remaining challenges and future development opportunities.
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Yuan, Jinliang, Masoud Rokni i Bengt Sunden. "Fluid Flow and Heat Transfer Analysis for Proton Exchange Membrane Fuel Cells". W 8th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-3089.

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Guo, Hang, Chong Fang Ma, Mao Hai Wang, Jian Yu, Xuan Liu, Fang Ye i Chao Yang Wang. "Heat and Mass Transfer and Two Phase Flow in Hydrogen Proton Exchange Membrane Fuel Cells and Direct Methanol Fuel Cells". W ASME 2003 1st International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2003. http://dx.doi.org/10.1115/fuelcell2003-1755.

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Fuel cells are related to a number of scientific and engineering disciplines, which include electrochemistry, catalysis, membrane science and engineering, heat and mass transfer, thermodynamics and so on. Several thermophysical phenomena such as heat transfer, multicomponent transport and two phase flow play significant roles in hydrogen proton exchange membrane fuel cells and direct methanol fuel cells based on solid polymer electrolyte membrane. Some coupled thermophysical issues are bottleneck in process of scale-up of direct methanol fuel cells and hydrogen proton exchange membrane fuel cells. In present paper, experimental results of visualization of condensed water in fuel cell cathode microchannels are presented. The equivalent diameter of the rectangular channel is 0.8mm. Water droplets from the order of 0.08mm to 0.8mm were observed from several different locations in the channels. Several important problems, such as generation and change characteristics of water droplet and gas bubble, two phase flow under chemical reaction conditions, mass transfer enhancement of oxygen in the cathode porous media layer, heat transfer enhancement and high efficiency cooling system of proton exchange membrane fuel cells stack, etc., are discussed.
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Stockie, John M. "Multi-Phase Flow and Condensation in Proton Exchange Membrane Fuel Cells". W ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32539.

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The porous electrodes in a proton exchange membrane fuel cell are characterized by multi-phase flow, involving liquid water and multispecies gases, that are undergoing both condensation and catalyzed reactions. Careful management of liquid water and heat in the fuel cell system is essential for optimizing performance. The primary focus of this study is thus on condensation and water transport, neither of which have yet been studied in as much detail as other aspects of fuel cell dynamics. We develop a two-dimensional model for multi-phase flow in a porous medium that captures the fundamental transport processes going on in the electrodes. The governing equations are discretized using a finite volume approach, and numerical simulations are performed in order to determine the effect of changing operating conditions on fuel cell performance.
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Berning, Torsten. "A Numerical Investigation of Heat and Mass Transfer in Air-Cooled Proton Exchange Membrane Fuel Cells". W ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5419.

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Abstract A numerical analysis of an air-cooled proton exchange membrane fuel cell (PEMFC) has been conducted. The model utilizes the Eulerian multi-phase approach to predict the occurrence and transport of liquid water inside the cell. It is assumed that all the waste heat must be carried out of the fuel cell with the excess air which leads to a strong temperature increase of the air stream. The results suggest that the performance of these fuel cells is limited by membrane overheating which is ultimately caused by the limited heat transfer to the laminar air stream. A proposed remedy is the placement of a turbulence grid before such a fuel cell stack to enhance the heat transfer and increase the fuel cell performance.
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Farber, Aaron M., i Pei-Wen Li. "Analysis and Optimization Design of Proton-Exchange-Membrane Electrolysis Cell". W ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85081.

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Although much work has been done to optimize individual components of electrolyzers and fuel cells, very little has been done to simulate and optimize the entire system. A thorough paper review has been conducted to increase the accuracy of the PEM electrolyzer model and simulation discussed in this study. Data on optimal thicknesses and electrical properties of various electrolyzer elements was collected from various sources and collated. The simulation was then implemented to optimize the current collector rib dimensions for maximum performance and efficiency over a variety of temperatures. This paper shows higher temperatures significantly improve the efficiency of the cell while also increasing the optimal rib width dimensions. The increased efficiency is most likely due to the excess heat contributing towards the threshold energy required for the electrolysis while the varying resistances of the proton exchange membrane, with respect to temperature, can explain the increased rib width.
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Tokarz, C., i Greg Naterer. "Ohmic Heating and Thermochemical Irreversibilities in a Proton Exchange Membrane Fuel Cell". W 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-3396.

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Ito, Takamasa, Jinliang Yuan i Bengt Sunde´n. "Analysis of Intercooler in PEM Fuel Cell Systems". W ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56587.

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Heat exchangers are used in proton exchange membrane fuel cell systems (PEMFCs) for stack cooling, intercooling, water condensation and fuel reforming. Especially, the heat exchanger for the intercooling before the humidifier is investigated in this paper. It is found that, at high pressure or high mass flow rate, the need to cool the air (oxidant) is large. The heat exchanger uses coolant water from the stack cooling system or ambient air as the cold stream. With water-cooling, the volume of the heat exchanger will be small. However, difficulties exist because the small available temperature difference. Air-cooling can be used over a wide operating range but the heat exchanger volume will be large.
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Magistri, L., A. Traverso, A. F. Massardo i R. K. Shah. "Heat Exchangers for Fuel Cell and Hybrid System Applications". W ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2005. http://dx.doi.org/10.1115/fuelcell2005-74176.

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The fuel cell system and fuel cell gas turbine hybrid system represent an emerging technology for power generation because of its higher energy conversion efficiency, extremely low environmental pollution and potential use of some renewable energy sources as fuels. Depending upon the type and size of applications, from domestic heating to industrial cogeneration, there are different types of fuel cell technologies to be employed. The fuel cells considered in this paper are the proton exchange membrane (PEMFC), the molten carbonate (MCFC) and the solid oxide (SOFC) fuel cells. In all these systems, heat exchangers play an important and critical role in the thermal management of the fuel cell itself and the boundary components, such as the fuel reformer (when methane or natural gas is used), the air preheating and the fuel cell cooling. In this paper, the impact of heat exchangers on the performance of PEMFC systems and SOFC-MCFC gas turbine hybrid systems is investigated. Several options in terms of cycle layout and heat exchanger technology are discussed from the on-design, off-design and control perspectives. A general overview of the main issues related to heat exchangers performance, cost and durability is presented and the most promising configurations identified.
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Raporty organizacyjne na temat "Proton exchange membrane fuel cells Heat"

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Weisbrod, K. R., N. E. Vanderborgh i S. A. Grot. Modeling of gaseous flows within proton exchange membrane fuel cells. Office of Scientific and Technical Information (OSTI), grudzień 1996. http://dx.doi.org/10.2172/460311.

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Shamsuddin Ilias. DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS. Office of Scientific and Technical Information (OSTI), czerwiec 2002. http://dx.doi.org/10.2172/825378.

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Shamsuddin Ilias. DEVELOPMENT OF NOVEL ELECTROCATALYST FOR PROTON EXCHANGE MEMBRANE FUEL CELLS. Office of Scientific and Technical Information (OSTI), styczeń 2000. http://dx.doi.org/10.2172/778369.

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Shamsuddin Ilias. DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS. Office of Scientific and Technical Information (OSTI), lipiec 2001. http://dx.doi.org/10.2172/825377.

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Shamsuddin Ilias. DEVELOPMENT OF NOVEL ELECTROCATALYSTS FOR PROTON EXCHANGE MEMBRANE FUEL CELLS. Office of Scientific and Technical Information (OSTI), kwiecień 2003. http://dx.doi.org/10.2172/821855.

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Lvov, S. N., H. R. Allcock, X. Y. Zhou, M. A. Hofmann, E. Chalkova, M. V. Fedkin, J. A. Weston i C. M. Ambler. High temperature direct methanal-fuel proton exchange membrane fuel cells. Final report. Office of Scientific and Technical Information (OSTI), październik 2001. http://dx.doi.org/10.2172/820976.

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George Marchetti. Interim report re: component parts for proton-exchange membrane fuel cells. Office of Scientific and Technical Information (OSTI), październik 1999. http://dx.doi.org/10.2172/761769.

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Dhar, H. P., J. H. Lee i K. A. Lewinski. Self-humidified proton exchange membrane fuel cells: Operation of larger cells and fuel cell stacks. Office of Scientific and Technical Information (OSTI), grudzień 1996. http://dx.doi.org/10.2172/460298.

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Beckert, Werner F., Ottmar H. Dengel, Robert D. Lynch, Gary T. Bowman i Aaron J. Greso. Solid Hydride Hydrogen Source for Small Proton Exchange Membrane (PEM) Fuel Cells. Fort Belvoir, VA: Defense Technical Information Center, maj 1997. http://dx.doi.org/10.21236/ada371137.

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Pratt, Joesph W., Leonard E. Klebanoff, Karina Munoz-Ramos, Abbas A. Akhil, Dita B. Curgus i Benjamin L. Schenkman. Proton Exchange Membrane Fuel Cells for Electrical Power Generation On-Board Commercial Airplanes. Office of Scientific and Technical Information (OSTI), maj 2011. http://dx.doi.org/10.2172/1219354.

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