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Experimental investigation of dry feed operation in a polymer electrolyte membrane fuel cell
Published in Elsevier
2014
Volume: 260
   
Pages: 243 - 250
Abstract
The possibility of achieving self-humidified operation of a polymer electrolyte membrane fuel cell, without any major modifications to the conventional fuel cell design, is investigated experimentally. The flow distributor is designed such that the non-uniform under-rib convection aids to retain product water in the fuel cell enabling a dry feed operation. The fuel cell is operated in a pseudo co-flow and pseudo counter flow modes at a constant current density and the transient change in voltage and temperature are recorded. In the pseudo co-flow mode, the voltage drops at higher temperature and reactant stoichiometries which is attributed to membrane dehydration at the inlet region of the cell. In the pseudo counter-flow mode, the voltage remains same at both low and high temperature operation and is found to be independent of reactant stoichiometry. A horizontal orientation of the flow field, in pseudo counter flow mode, is found to be ideal for self-humidified operation at low reactant stoichiometries and cell temperature. © 2014 Elsevier B.V. All rights reserved.
About the journal
JournalData powered by TypesetJournal of Power Sources
PublisherData powered by TypesetElsevier
ISSN03787753
Open AccessNo
Concepts (16)
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    Electrolytes
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    Flow control
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    High temperature operations
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    Polymers
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    Proton exchange membrane fuel cells (pemfc)
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    Stoichiometry
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    Water management
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    CONSTANT CURRENT DENSITY
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    Conventional fuel
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    Experimental investigations
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    FLOW DISTRIBUTORS
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    MEMBRANE DEHYDRATION
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    SELF-HUMIDIFICATION
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    TRANSIENT CHANGES
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    UNDER-RIB CONVECTIONS
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    Inlet flow