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http://dx.doi.org/10.3795/KSME-B.2012.36.6.579

Development of System for Measuring Evaporation Rate through Porous Medium in Fuel Cells  

Kim, Jong-Rok (School of Dynamic Systems, University of Cincinnati)
Kim, Moo-Hwan (Division of Advanced of Nuclear Engineering, POSTECH)
Son, Sang-Young (School of Dynamic Systems, University of Cincinnati)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.6, 2012 , pp. 579-582 More about this Journal
Abstract
Removing residual water in a fuel cell is a critical operational process for managing its performance and controlling its lifetime. Understanding the mechanism of water transport in fuel cells is essential for the design of the water removal process. In this study, an experimental method for measuring the water evaporation rate through a gas diffusion layer, which is a porous medium, under steady-state conditions was developed. Experimental bench tests were conducted to apply the developed method. Then, the effects of various parameters of the drying gas and the gas diffusion layer were experimentally measured. The water evaporation rate increased as the humidity of the drying gas decreased and the flow rate of the drying gas increased. In addition, a thinner gas diffusion layer yielded a higher water evaporation rate.
Keywords
Porous Medium; Gas Diffusion Layer; Fuel Cell; Evaporation; Water;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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