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Energy performance and consumption for biogas heat pump air conditioner

Author

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  • Xu, Zhenjun
  • Wu, Huaizhi
  • Wu, Meiling

Abstract

Biogas engine-driven heat pump air conditioner is a new-style system which includes biogas engine-driven heat pump, primary heat exchanger, second heat exchanger, sprayed room and fans, pumps, etc. In summertime, the air can be reheated by the waste heat water from the biogas engine in the system, while the air can be reheated and humidified by the waste heat water in winter. Reducing or displacing electrical heating requirements can achieve the great opportunity for significant energy savings. This paper, therefore, aims to improve the energy performance of the AC system by using the waste heat from the biogas engine. The mathematic model was used to research the BHPAC. Explicitly, we investigated the influence of various factors including the outdoor air temperature and humidity in summer and winter. Results show that the biogas engine-driven heat pump air conditioner can save more energy than the electrical power heat pump. In summer, the minimum for percentage of primary energy saving for BHPAC is over 25%. With the outdoor air dry-bulb temperature and the relative humidity rises, the saving energy percentage rises. In winter, the minimum for percentage of primary energy saving for BHPAC is 37%. The more the outdoor air relative humidity of the outdoor air decreases, the more the BHPAC saves energy. It is proved that the system which is a highly actively fully utilizing energy technology has good partial load characteristic and good effects of energy saving.

Suggested Citation

  • Xu, Zhenjun & Wu, Huaizhi & Wu, Meiling, 2010. "Energy performance and consumption for biogas heat pump air conditioner," Energy, Elsevier, vol. 35(12), pages 5497-5502.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:12:p:5497-5502
    DOI: 10.1016/j.energy.2010.01.040
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    Citations

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    Cited by:

    1. Harby, K. & Gebaly, Doaa R. & Koura, Nader S. & Hassan, Mohamed S., 2016. "Performance improvement of vapor compression cooling systems using evaporative condenser: An overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 347-360.
    2. Zhang, Zijun & Zeng, Yaohui & Kusiak, Andrew, 2012. "Minimizing pump energy in a wastewater processing plant," Energy, Elsevier, vol. 47(1), pages 505-514.
    3. Carlo Roselli & Elisa Marrasso & Maurizio Sasso, 2021. "Gas Engine-Driven Heat Pumps for Small-Scale Applications: State-of-the-Art and Future Perspectives," Energies, MDPI, vol. 14(16), pages 1-73, August.
    4. Gazda, Wiesław & Kozioł, Joachim, 2013. "The estimation of energy efficiency for hybrid refrigeration system," Applied Energy, Elsevier, vol. 101(C), pages 49-57.
    5. Mostafavi, Seyed Alireza & Khalili, Mohammad & Hajjarian, Ramtin & Moghadamrad, Hossein, 2024. "Analysis of the technical and economic aspects of gas engine heat pumps in various climates in Iran," Energy, Elsevier, vol. 302(C).
    6. Singh, A.K. & Singh, R.G. & Tiwari, G.N., 2020. "Thermal and electrical performance evaluation of photo-voltaic thermal compound parabolic concentrator integrated fixed dome biogas plant," Renewable Energy, Elsevier, vol. 154(C), pages 614-624.
    7. Dong, Feiqing & Lu, Jianbo, 2013. "Using solar energy to enhance biogas production from livestock residue – A case study of the Tongren biogas engineering pig farm in South China," Energy, Elsevier, vol. 57(C), pages 759-765.

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