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Water Transport Through Porous Media And In Flow Channels Of Proton Exchange Membrane Fuel Cell, Mehdi Mortazavi
Water Transport Through Porous Media And In Flow Channels Of Proton Exchange Membrane Fuel Cell, Mehdi Mortazavi
Dissertations, Master's Theses and Master's Reports - Open
Proton exchange membrane (PEM) fuel cell has been known as a promising power source for different applications such as automotive, residential and stationary. During the operation of a PEM fuel cell, hydrogen is oxidized in anode and oxygen is reduced in the cathode to produce the intended power. Water and heat are inevitable byproducts of these reactions. The water produced in the cathode should be properly removed from inside the cell. Otherwise, it may block the path of reactants passing through the gas channels and/or gas diffusion layer (GDL). This deteriorates the performance of the cell and eventually can cease …
Two-Phase Flow In Microchannels: Morphology And Interface Phenomena, Alexandru Herescu
Two-Phase Flow In Microchannels: Morphology And Interface Phenomena, Alexandru Herescu
Dissertations, Master's Theses and Master's Reports - Open
The existence and morphology, as well as the dynamics of micro-scale gas-liquid interfaces is investigated numerically and experimentally. These studies can be used to assess liquid management issues in microsystems such as PEMFC gas flow channels, and are meant to open new research perspectives in two-phase flow, particularly in film deposition on non-wetting surfaces. For example the critical plug volume data can be used to deliver desired length plugs, or to determine the plug formation frequency. The dynamics of gas-liquid interfaces, of interest for applications involving small passages (e.g. heat exchangers, phase separators and filtration systems), was investigated using high-speed …