Impact of Relative Humidity of Supply Gas on Temperature Distributions in Single Cell of Polymer Electrolyte Fuel Cell When Operated at High Temperature  

作　　者：Akira Nishimura Masato Yoshimura Satoru Kamiya Masafumi Hirota Eric Hu 

机构地区：[1]Division of Mechanical Engineering, Graduate School of Engineering, Mie University, Tsu-eity, Mie 514-8507, Japan [2]School of Mechanical Engineering, the University of Adelaide, Adelaide, SA 5005, Australia

出　　处：《Journal of Energy and Power Engineering》2017年第11期706-718,共13页能源与动力工程（美国大卫英文）

摘　　要：For improving the performance of stationary PEFC （polymer electrolyte fuel cell） system, the cell operating temperature up to 90℃ will be preferred in Japan during the period from 2020 to 2030. To understand the operation of the PEFC system under relatively high temperature conditions, detail heat and mass transfer analysis is required. The purpose of this study is to analyze the impact of relative humidity of supply gas on temperature distribution on the backside of separator in single ceil of PEFC using Nation membrane at higher temperature e.g. 90℃. The in-plane temperature distribution when power was being generated was measured using thermograph with various relative humidity of supply gases. It was found that the in-plane temperature distribution at the anode was more even than that at the cathode irrespective of the relative humidity of supply gas at the anode and the cathode. The temperature elevated along gas flow through the gas channel at the cathode irrespective of relative humidity of supply gas at the anode and the cathode. The in-plane temperature distribution at the cathode was narrower with the increase in Tini irrespective of relative humidity of supply gas at the cathode, while it was not observed when changing the relative humidity of supply gas at the anode. When the relative humidity of supply gas at cathode decreased, the in-plane temperature distribution at the anode was wider compared to decreasing the relative humidity of supply gas at the anode. The study concluded that the impact of relative humidity of supply gas at both anode and cathode had little impact on the in-plane temperature distribution at the cathode.

关 键 词：PEFC temperature distribution high temperature operation relative humidity. 

分 类 号：TK0[动力工程及工程热物理]