The maximum electricity efficiency of hydrogen fueled fuel cell system

doi:10.3969/j.issn.0253-2778.2016.12.005

Journal of University of Science and Technology of China ›› 2016, Vol. 46 ›› Issue (12): 993-998.DOI: 10.3969/j.issn.0253-2778.2016.12.005

• Original Paper • Previous Articles

The maximum electricity efficiency of hydrogen fueled fuel cell system

YANG Jianxin, LIN Zijing

Department of Physics， School of Physical Sciences, University of Science and Technology of China， Hefei 230026， China

Received:2016-05-24 Revised:2016-09-10 Accepted:2016-09-10 Online:2016-09-10 Published:2016-09-10

Abstract

Abstract: Based on the fundamental definition of the electrical efficiency and the thermodynamics principle, a theoretical expression for the maximum electricity efficiency of a fuel cell system was derived. The characteristics of cell voltage operating at the maximum electrical efficiency and the energy required for heating the fuel and air were considered in deriving the maximum electricity efficiency expression. The values of the maximum electricity efficiency for hydrogen fuel at different operating temperatures were presented. The relationships between the maximum electricity efficiency and the working temperature, fuel utilization and the fuel steam content were analyzed.

Key words: enthalpy, Nernst electromotive force, working temperature, energy balance, fuel utilization, fuel composition

CLC Number:

O414.

YANG Jianxin, LIN Zijing. The maximum electricity efficiency of hydrogen fueled fuel cell system[J]. Journal of University of Science and Technology of China, 2016, 46(12): 993-998.

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The maximum electricity efficiency of hydrogen fueled fuel cell system

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