کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11017579 1725872 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anode recirculation and purge strategies for PEM fuel cell operation with diluted hydrogen feed gas
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Anode recirculation and purge strategies for PEM fuel cell operation with diluted hydrogen feed gas
چکیده انگلیسی
Commercial polymer electrolyte membrane (PEM) fuel cell systems require pure hydrogen feed gas (ISO 14687-2), otherwise impurities and inert gases would accumulate. Inert gases are difficult to remove, but do not hazard the fuel cell stack itself. Therefore, two purge strategies are introduced and experimentally investigated which enable fuel cell operation with up to 30 vol.% nitrogen content in the feed gas. Both strategies use a commercial on-line hydrogen sensor at the stack outlet either to trigger a discontinuous purge or to control the purge valve continuously. The experimental results show that the discontinuous purge strategy can be applied up to 10 vol.% nitrogen content in the feed gas. The continuous purge strategy was successfully operated with up to 30 vol.% nitrogen content and achieved the theoretical maximum fuel efficiency between 80 and 100%. The influence of nitrogen crossover on fuel efficiency and operating performance was investigated and found negligible. To sum up, the new continuous purge strategy offers an efficient, easy-to-implement, and robust solution to operate polymer electrolyte membrane fuel cell systems with up to 30 vol.% nitrogen content in the feed gas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 232, 15 December 2018, Pages 572-582
نویسندگان
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