干旱区生态环境知识资源中心(Arid): Modeling of gaseous flows within proton exchange membrane fuel cells

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DOI	10.2172/460311
报告编号	CONF-961107--Absts.
来源ID	OSTI_ID: 460311
	Modeling of gaseous flows within proton exchange membrane fuel cells
	Weisbrod, K.R.; Vanderborgh, N.E. [Los Alamos National Lab., NM (United States)]; Grot, S.A. [Delphi Energy and Engine Management Systems, Rochester, NY (United States)]
英文摘要	Development of a comprehensive mechanistic model has been helpful to understand PEM fuel cell performance. Both through-the-electrode and down-the-channel models have been developed to support our experimental effort to enhance fuel cell design and operation. The through-the-electrode model was described previously. This code describes the known transport properties and dynamic processes that occur within a membrane and electrode assembly. Key parameters include transport through the backing layers, water diffusion and electroosmotic transport in the membrane, and reaction electrochemical kinetics within the cathode catalyst layer. In addition, two geometric regions within the cathode layer are represented, the first region below saturation and second with liquid water present. Although processes at high gas stoichiometry are well represented by more simple codes, moderate stoichiometry processes require a two dimensional representation that include the gaseous composition and temperature along flow channel. Although usually PEM hardware utilizes serpentine flow channels, this code does not include such geometric features and thus the flow can be visualized along a single channel.
出版年	1996
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	30 DIRECT ENERGY CONVERSION ; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS ; HYDROGEN FUEL CELLS ; MATHEMATICAL MODELS ; DIFFUSION ; LAYERS ; GAS FLOW ; ELECTRODES ; MEMBRANES ; HUMIDITY ; CURRENT DENSITY ; ELECTRIC POTENTIAL ; OXYGEN
URL	http://www.osti.gov/scitech/servlets/purl/460311
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266987
推荐引用方式 GB/T 7714	Weisbrod, K.R.,Vanderborgh, N.E. [Los Alamos National Lab., NM ,Grot, S.A. [Delphi Energy and Engine Management Systems, Rochester, NY . Modeling of gaseous flows within proton exchange membrane fuel cells,1996.