This study focuses on performance analysis of a 1kWe microcogeneration system based on a high temperature proton exchange\nmembrane (HT-PEM) fuel cell by means of parametric investigation. A mathematical model for a system consisting of a fuel\nprocessor (steamreforming reactor andwater-gas shift reactor), aHT-PEM fuel cell stack, and the balance-of-plant components was\ndeveloped. Firstly, the fuel processor performance at different fuel ratios and equivalence ratio was examined. It is shown that high\nfuel ratios of 0.9ââ?¬â??0.95 and equivalence ratios of less than 0.56 are suitable for acceptable carbon monoxide content in the synthetic\ngas produced. Secondly, a parametric study of the system performance at different fuel and equivalence ratios using key system\noperating parameters was conducted. Steam-to-carbon ratio, stack operating temperature, and anode stoichiometry were varied\nto observe the changes in the microcogeneration system. The analysis shows that the system can reach electrical and cogeneration\nefficiencies of 30% and 84%, respectively.
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