In situ investigation of water transport in an operating PEM fuel cell using neutron radiography: Part 1 - Experimental method and serpentine flow field results

被引：171
作者：
Trabold, T. A.
Owejan, J. P.
Jacobson, D. L.
Arif, M.
Huffman, P. R.
机构：
[1] Gen Motors Fuel Cell Act, Honeoye Falls, NY 14472 USA
[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[3] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2006年 / 49卷 / 25-26期
关键词：
fuel cell; PEM; neutron radiography; water management; two-phase flow;
D O I：
10.1016/j.ijheatmasstransfer.2006.07.003
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Effective management of liquid water produced in the cathodic reaction of a polymer electrolyte membrane (PEM) fuel cell is essential to achieve high cell efficiency. Few experimental methods are available for in situ measurements of water transport within an operating cell. Neutron radiography is a useful tool to visualize water within a cell constructed of many common materials, including metals. The application of neutron radiography to measurements of water content within the flow field channels of an operating 50 cm(2) PEM fuel cell is described. Details of the experimental apparatus, image processing procedure and quantitative analysis are provided. It is demonstrated that water tends to accumulate in the 180 degrees bends of the serpentine anode and cathode flow fields used in this study. Moreover, the effects of both the current density and cathode stoichiometric ratio on the quantity of accumulated water are discussed. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4712 / 4720
页数：9
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