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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Akira Nishimura1, Masato Yoshimura1, Satoru Kamiya1, Masafumi Hirota1 and Eric Hu2
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DOI:10.17265/1934-8975/2017.11.004
Affiliation(s)
1. Division of Mechanical Engineering, Graduate School of Engineering, Mie University, Tsu-city, Mie 514-8507, Japan
2. School of Mechanical Engineering, the University of Adelaide, Adelaide, SA 5005, Australia
ABSTRACT
For improving the
performance of stationary PEFC (polymer electrolyte fuel cell) system, the cell
operating temperature up to 90 °C 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 cell of PEFC using Nafion membrane at higher temperature
e.g. 90 °C. 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.
KEYWORDS
PEFC, temperature distribution, high temperature operation, relative humidity.
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