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http://dx.doi.org/10.7316/KHNES.2015.26.2.136

Experimental Analysis for Optimization of PEM Fuel Cell Dead-end Operation  

Lee, Bonggu (Advanced Energy and Technology, University of Science and Technology)
Sohn, Young-Jun (Advanced Energy and Technology, University of Science and Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.26, no.2, 2015 , pp. 136-147 More about this Journal
Abstract
Dead-ended operation of Proton Exchange Membrane Fuel Cell(PEMFC) provides the simplification of fuel cell systems to reduce fuel consumption and weight of fuel cell. However, the water accumulation within the channel prohibits a uniform supply of fuel. Optimization of the purge strategy is required to increase the fuel cell efficiency since fuel and water are removed during the purge process. In this study, we investigated the average voltage output which depends on two interrelated conditions, namely, the supply gas pressure, purging valve open time. In addition, flow visualization was performed to better understand the water build-up on the anode side and cathode side of PEMFC in terms of a variety of the current density. We analyzed the correlation between the purge condition and water flooding.
Keywords
PEM fuel cell; Dead-end mode; Fuel cell optimization; Visualization; Water management;
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