Optimal design of PEM fuel cells to generate maximum power: A CFD study
Optimal design of PEM fuel cells to generate maximum power: A CFD study
... study quantifies and analyses the impact of operating, design, and material parameters on fuel cell performance and get an optimal design for PEM fuel cells to generate maximum power. The analysis ... & Environment Foundation. All rights reserved. Optimal design of PEM fuel cells to generate maximum power: A CFD study Maher A. R. Sadiq Al-Baghdadi Fuel Cell Research Center, International ... operating, design, and material parameters on fuel cell performance and get an optimal design for PEM fuel cells to generate maximum power. To generate maximum power, the results show that the cell...
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Sensibility study of flooding and drying issues to the operating conditions in PEM fuel cells
... critical issues to address: lack of water in the membrane can lead to an important increase of membrane resistance and thus to a decrease of the cell potential, while an excess of liquid water ... lead to the appearance of liquid water, a first approach is to look at the gas flow in the cathode channel [11]. The outlet water vapor partial pressure in the gas can be computed via a mass balance ... with liquid water appearance in the cell. The models used are often too simple to allow a complete analysis of operating parameters. Moreover, in International Journal of Energy and Environment...
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Optimal Design of a Hybrid Electric Car with Solar Cells pptx
... electric motor EM can reach a peak power Pmax: . avPP θ=max (1) The adoption of a peak factor θ greater that unit is essential to reach acceptable values of power to weight ratio. On ... limited reliability of panels in case of lateral impacts). FIG. 3 - SIMPLIFIED SCHEME OF SOLAR CAR (LATERAL AND REAR VIEW). The maximum panel area can be estimated as function of car dimensions ... last years, increasing attention has been spent toward the applications of solar energy to cars. Various prototypes of solar cars have been built and tested, mainly for racing [1][2][3] and...
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distillation theory and its application to optimal design of separation units
... decades: Victoria Avetyan, Vyacheslav Kiyevskiy, MayaYampolskaya, Valentina Mashkova, Galina Inyayeva, Elizaveta Vinogradova,Zhanna Bril, Boris Isayev, Alexander Shafir, and Oleg Karpilovskiy.My ... universal computer programs that enable one to design a distillation column (system) of any type for separation of any kind of mixture. However, the pure computational approach gives no answer to a ... necessitatedthe development of DistillDesigner software that allowed us to refine, check, andconfirm the algorithms of optimal designing and also to provide for a significantportion of illustrations...
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A CFD study of hygro-thermal stresses distribution in tubular-shaped ambient air-breathing PEM micro fuel cell during regular cell operation
... operation Maher A. R. Sadiq Al-Baghdadi Fuel Cell Research Center, International Energy & Environment Foundation, Al-Najaf, P.O.Box 39, Iraq. Abstract The need for improved lifetime of air-breathing ... several ways such as chemical degradation of the ionomer membrane or mechanical failure in the PEM that results in gradual reduction of ionic conductivity, increase in the total cell resistance, and ... development and optimization of fuel cells, improve long-term performance, the introduction of cheaper materials and fabrication techniques, and the design and development of International Journal of...
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Mechanical behaviour of PEM fuel cell catalyst layers during regular cell operation
... performance. Variations in operating modes and general cell design according to application means that how dominant certain performance degradation and failure mechanisms are also change according to ... International Energy & Environment Foundation, Al-Najaf, P.O.Box 39, Iraq. Abstract Damage mechanisms in a proton exchange membrane fuel cell are accelerated by mechanical stresses arising ... is characterized by the surface area of platinum by mass of carbon support. The electrochemical half-cell reactions can only occur, where all the necessary reactants have access to the catalyst...
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Optimal placement of horizontal - and vertical - axis wind turbines in a wind farm for maximum power generation using a genetic algorithm
... VAWT for optimal power generation. 2. Wake, power and cost modeling of a HAWT 2.1 Jensen's wake modeling of a HAWT All the results reported to date in the literature on optimal layout of wind ... results are given in Table 4. The optimal layout is the same as that of a HAWT as shown in Figure 9. Table 4. Optimization results for VAWT wind farm Optimization Objective Case III Case IV Total ... 5 demonstrate that the layout optimization of a wind farm of HAWT using GA gives a uniform grid arrangement similar that obtained by Grady et al. [2]; this is different than that obtained by Mosetti...
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Measurements and Mitigation of Peer-to-Peer-based Botnets: A Case Study on Storm Worm ppt
... on average). The first Storm-relatedmessage we are aware of was received on December 29, 2006:It contained best wishes for the year 2007 and as an attachment a copy of the Storm binary. An analysis ... that computes the key. The drawback of this approach is that the attacker can easily change f and thenwe need to analyze the binary again, thus we are always one stepFigure 1: Keys generated ... cannot keep any state,it generates again a key and starts searching for it. By repeat-ing this process over and over again, we are able to enumeratethe keys used by Storm in a black-box manner,...
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design of reinforced concrete structure volume 1 DR mashhour a ghoneim
... ...
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the impact of globalization on vietnamese company’s financial performance a case study of lang son cement company (lcc)
... the analysis of a financial statement takes an important role in business activities of a company. Because any company also need an improvement of financial statement preparation to attract ... general look at financial statement, the general approach applied in analysis of financial statements, the nature of globalization, and the impact of globalization on the financial statement of ... Financial – leverage ratios indicate the extent to which borrowed or debt fund are used to finance assets Total debt to total assets = assets totaldebt total Year 2007: total debt to total...
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