期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 40, 期 46, 页码 16760-16766出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.07.040
关键词
Polymer electrolyte fuel cell (PEFC); Forced convection; Experimental optimisation; Electro-thermal performance maps
资金
- EPSRC [EP/G030995/1, EP/I037024/1, EP/M009394/1, EP/J001007/1]
- A3 Falcon Programme
- Intelligent Energy
- UCL
- Engineering and Physical Sciences Research Council [EP/I037024/1, EP/J001007/1, EP/M009394/1, EP/G060991/1, EP/K038656/1, EP/G030995/1] Funding Source: researchfish
- EPSRC [EP/G030995/1, EP/J001007/1, EP/K038656/1, EP/I037024/1, EP/M009394/1, EP/G060991/1] Funding Source: UKRI
Overall fuel cell system efficiency must include consideration of the parasitic loads associated with operating the stack. For an air-cooled open-cathode polymer electrolyte fuel cell (PEFC) the air blowers form the largest parasitic load and have a direct influence of the performance of the stack and its temperature; increasing air flow often leading to improved performance at the expense of increasing parasitic load. Here, electro-thermal performance maps are used to characterise stack operation with varying air flow rate (for both cooling and cathode oxygen supply). The non-linear power requirement of air blowers is used to modify stack-level electro-thermal maps to give system-level performance maps capable of identifying the optimum air flow rate to maximise net power output and consequently efficiency at a given operating point. The electro-thermal map concept is invoked in the consideration of dynamics of fuel cell system operation with issues pertaining to speed of response, durability and system self-sustainable operation. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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