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A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system


Reference:

Ang, S. M. C., Brett, D. J. L. and Fraga, E. S., 2010. A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system. Journal of Power Sources, 195 (9), pp. 2754-2763.

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Official URL:

http://dx.doi.org/10.1016/j.jpowsour.2009.10.095

Abstract

This paper presents an optimisation model for a general polymer electrolyte membrane (PEM) fuel cell system suitable for efficiency and size trade-offs investigation. Simulation of the model for a base case shows that for a given output power, a more efficient system is bigger and vice versa. Using the weighting method to perform a multi-objective optimisation, the Pareto sets were generated for different stack output powers. A Pareto set, presented as a plot of the optimal efficiency and area of the membrane electrode assembly (MEA), gives a quantitative description of the compromise between efficiency and size. Overall, our results indicate that, to make the most of the size-efficiency trade-off behaviour, the system must be operated at an efficiency of at least 40% but not more than 47%. Furthermore, the MEA area should be at least 3 cm2 W−1 for the efficiency to be practically useful. Subject to the constraints imposed on the model, which are based on technical practicalities, a PEM fuel cell system such as the one presented in this work cannot operate at an efficiency above 54%. The results of this work, specifically the multi-objective model, will form a useful and practical basis for subsequent techno-economic studies for specific applications.

Details

Item Type Articles
CreatorsAng, S. M. C., Brett, D. J. L. and Fraga, E. S.
DOI10.1016/j.jpowsour.2009.10.095
DepartmentsFaculty of Engineering & Design > Chemical Engineering
RefereedYes
StatusPublished
ID Code51781

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