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Comprehensive Evaluation of Cogeneration Biogas Multiple Supply System for Rural Communities in Northwest China

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  • Jinping Li

    (College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

  • Xiaotong Han

    (College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

Abstract

In the context of rapid urbanization in China, many farmers still live in areas far away from urban energy supply networks. To meet the multi-level energy demands of rural communities, this study proposes a combined heat, power, and electricity (CCHP) supply system that uses solar and biomass energy as inputs, tailored to the natural resources and climatic conditions of the northwestern region. A theoretical model of this system was established in Nanan Community, Wuwei City, and its dynamic performance throughout the year was simulated and analyzed using TRNSYS software. The system was also evaluated for its economic viability, energy efficiency, and environmental impact. The results show that compared with the original and traditional energy supply systems, the CCHP system achieves average primary energy saving rates of −9.87% and 41.52% during the heating season, annual cost savings of 50.35% and 64.19%, carbon dioxide emission reduction rates of 32.89% and 66.86%, and a dynamic investment payback period of 3.14 years. This study provides development ideas for constructing modern integrated energy systems in rural areas that are remote from urban energy supply networks and offers references for investors.

Suggested Citation

  • Jinping Li & Xiaotong Han, 2025. "Comprehensive Evaluation of Cogeneration Biogas Multiple Supply System for Rural Communities in Northwest China," Energies, MDPI, vol. 18(12), pages 1-27, June.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:12:p:3124-:d:1678729
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    References listed on IDEAS

    as
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