Influence of thermal management and integration with turbomachinery on the performance of polymer electrolyte membrane fuel cell systems |
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Authors: | Ji Seung Won Ryu Byung Joon Park Sung Ku Kim Tong Seop |
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Affiliation: | (1) Institute of Heat Engineering, Warsaw University of Technology, 21/25 Nowowiejska Street, 00-665 Warsaw, Poland |
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Abstract: | Polymer electrolyte membrane fuel cells (PEMFCs) have many good characteristics for small power sources such as low operating
temperature and high power density. In this study, the effects of thermal management on the performance of PEMFC systems using
natural gas fuel, and the effects of integrating PEMFC systems with turbomachines, were investigated. Firstly, performance
of various system configurations differing in the thermal management of reforming and stack cooling processes was comparatively
analyzed. Then, various integrated system combinations with turbomachines (compressors and turbines) were analyzed. We performed
a parametric analysis of the influence of turbine inlet temperature and compressor pressure ratio on system performance, and
a 10% difference in efficiency among four simple PEMFC systems was predicted. Pressurization of the PEMFC with adequate thermal
management may improve system efficiency, while efficiency enhancement from corresponding simple PEMFC systems was hard to
achieve in the ambient pressure integrated systems. |
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