Simulation effect of operating temperature on performance of PEMFC based on serpentine flow field design

Bài báo do nhóm tác giả Phạm Hòa Bình, Đoàn Công Thành Khoa Công nghệ ô tô trường ĐHCNHN, được đăng tải trên tạp chí International Journal of Scientific Engineering and Applied Science (IJSEAS) – Volume-4, Issue-5, May 2018 ISSN: 2395-3470

Abstract

Polymer electrolyte membrane fuel cells (PEMFCs) transform directly chemical energy into electricity based on the reaction between hydrogen and oxygen. This research evaluated the effect of temperature on fuel cell operation relying to a 3-D fuel cell model simulation. The results of this research showed that the operating temperature relates to the water formation inside fuel cell; as a result, it affects directly to fuel cell performance. If the operating temperature is too low, the formed water exists at liquid phase, then it blocks gas channels. This phenomenon can degrade the fuel cell performance. In case of high operating temperature, the dryness of the membrane will decrease the electrical conductivity and lead to increase resistive loss. Therefore, maintaining suitable membrane humidity is very important to ensure optimal operation of a PEMFC system.

Keywords: Polymer electrolyte membrane fuel cells; flow-field design; water management, temperature field.

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