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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Akira Nishimura1, Kotaro Osada1, Takuro Tsunoda1, Masato Yoshimura1, Masafumi Hirota1 and Eric Hu2
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DOI:10.17265/1934-8975/2016.08.001
Affiliation(s)
1. Division of Mechanical Engineering, Graduate School of Engineering, Mie University, Tsu-city, Mie 514-8507, Japan
2. School of Mechanical Engineering, University of Adelaide, Adelaide, SA 5005, Australia
ABSTRACT
This
study is to understand the impact of operating condition, especially initial
operation temperature (Tini)
which is set in high temperature range, on the temperature profile of the
interface between PEM
(polymer electrolyte membrane)
and catalyst layer at the cathode (i.e., the reaction surface) in a single PEFC (polymer electrolyte fuel cell). A 1D multi-plate
heat transfer model based on the temperature data of separator measured using
thermograph in a power generation experiment was developed to evaluate the
reaction surface temperature (Treact).
This study investigated the effects of flow rate,
relative humidity and type of supply gas as well as Tini on the temperature distribution on reaction
surface. The results obtained in O2 supply case show that, the temperature rise at the segments near the outlet of
cell decreases with increasing Tini irrespective of relative humidity of supply gas (RH), while it is not seen in
air supply case. Regarding the segments except near the outlet in O2 supply case, Treact – Tini increases with
increasing Tini for 40%
RH. The temperature distribution on reaction surface in O2 supply case is wider with increasing Tini as well as decreasing RH, though that in air supply case is relatively even.
KEYWORDS
PEFC, heat transfer model, temperature distribution, high temperature operation.
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