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

Ang, SMC; Brett, DJL; Fraga, ES; (2010) A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system. Journal of Power Sources , 195 (9) 2754 - 2763. 10.1016/j.jpowsour.2009.10.095. Green open access

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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 cm(2) 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. (C) 2009 Elsevier B.V. All rights reserved.

Type: Article
Title: A multi-objective optimisation model for a general polymer electrolyte membrane fuel cell system
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jpowsour.2009.10.095
Publisher version: http://dx.doi.org/10.1016/j.jpowsour.2009.10.095
Language: English
Keywords: Fuel cell, Multi-objective optimisation, Design, Modelling, MATHEMATICAL-MODEL, EMPIRICAL-EQUATION, PERFORMANCE, DESIGN, MANAGEMENT, OPERATION, CATHODE, WATER
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/71837
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