期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 32, 页码 14217-14229出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.06.089
关键词
Thermal management; Water balance; Fuel cell vehicle; PEM; Heat transfer; Cooling
资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/G037116/1]
- Engineering and Physical Sciences Research Council [1094784] Funding Source: researchfish
Despite having efficiencies higher than internal combustion engines, heat rejection from fuel cells remains challenging due to lower operating temperatures and reduced exhaust heat flow. This work details a full system simulation which is then used to compare a conventional liquid cooled fuel cell system to two types of evaporatively cooled fuel cell systems. Both steady state and transient operation are considered. Results show the radiator frontal area required to achieve thermal and water balance for an evaporatively cooled system with an aluminium condensing radiator is 27% less than a conventional liquid cooled system at 1.25 A/cm(2) steady state operation. The primary reason for the reduction is higher heat transfer coefficients in the condensing radiator due to phase change. It is also shown that the liquid water separation efficiency has a significant influence on the required radiator frontal area of the evaporatively cooled system. (C) 2016 The Authors. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
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