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Integrated performance analysis and optimization of PEMFC/heat pump cogeneration system with methanol reforming

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  • Gu, Weibo
  • Sun, Dahan

Abstract

To promote the process of energy system transformation and sustainable development, this paper proposes a new hybrid cogeneration system of LT (low-temperature) PEMFC/HT (high-temperature) heat pump with methanol. Using 3E analysis method to evaluate the impact of different factors on the overall performance of the new system, and conducting multi-objective optimization on the new system. The results indicate that with increasing evaporation temperature, the net power generation and net power efficiency of the new system show an increasing trend, while other performance parameters show a decreasing trend. The impact of condensation temperature on the overall performance of the new system is opposite to that of evaporation temperature. With increasing hydrogen production, both net power efficiency and energy efficiency of the new system decrease, while other performance parameters increase. The degree of subcooling has almost no effect on the overall performance of the new system. In addition, the new system reaches its optimum condition point at the evaporation temperature of 311K, and net power generation, total heating capacity, net power efficiency, energy efficiency, annual cost, payback period, and CO2 emission reduction are 46.92 kW, 177.8 kW, 13.12 %, 62.86 %, 43.3 × 103 $, 4.53 years, and 5.71 × 108 g, respectively.

Suggested Citation

  • Gu, Weibo & Sun, Dahan, 2026. "Integrated performance analysis and optimization of PEMFC/heat pump cogeneration system with methanol reforming," Renewable Energy, Elsevier, vol. 256(PA).
    • Handle: RePEc:eee:renene:v:256:y:2026:i:pa:s0960148125015940
    DOI: 10.1016/j.renene.2025.123930
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    References listed on IDEAS

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