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Theoretical and numerical study on performance of the air-source heat pump system in Tibet

Author

Listed:
  • Li, Yongcai
  • Li, Wuyan
  • Liu, Zongsheng
  • Lu, Jun
  • Zeng, Liyue
  • Yang, Lulu
  • Xie, Ling

Abstract

Air source heat pump (ASHP) technology is widely accepted for the merits of energy-saving and environmental protection, and has been served as the heating and cooling source in most part of China. This paper presents a numerical model to predict the performance of a typical ASHP system in Lhasa, the capital of Tibet Autonomous Region of China. The theoretical analysis shows that the occurrence of the frost is hard to be found on air-side heat exchanger due to the low relative humidity, which can improve the performance of the ASHP system. The numerical results show that the ambient air temperature and atmospheric pressure have a great effect on the system performance. For the case of without considering frosting problem, the COP of the system is reduced by 9.5%–12.5% than that for standard pressure (101.325 kPa). The heating capacity of the system is reduced by 16.2%–19.8% than that for standard pressure. For the case of considering frosting problem, the heating capacity and COP of the ASHP system in Lhasa are 37.5 kW and 1.98, respectively under the outdoor design temperature, which are almost same or higher than most cities in this study.

Suggested Citation

  • Li, Yongcai & Li, Wuyan & Liu, Zongsheng & Lu, Jun & Zeng, Liyue & Yang, Lulu & Xie, Ling, 2017. "Theoretical and numerical study on performance of the air-source heat pump system in Tibet," Renewable Energy, Elsevier, vol. 114(PB), pages 489-501.
    • Handle: RePEc:eee:renene:v:114:y:2017:i:pb:p:489-501
    DOI: 10.1016/j.renene.2017.07.036
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    References listed on IDEAS

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    1. Xiang Gou & Shian Liu & Yang Fu & Qiyan Zhang & Saima Iram & Yingfan Liu, 2018. "Experimental Study on the Performance of a Household Dual-Source Heat Pump Water Heater," Energies, MDPI, vol. 11(10), pages 1-18, October.
    2. Hai-Bo Zhao & Kun Wu & Jing-Feng Zhang, 2021. "Simulation Study on Active Air Flow Distribution Characteristics of Closed Heat Pump Drying System with Waste Heat Recovery," Energies, MDPI, vol. 14(19), pages 1-19, October.
    3. Li, Wuyan & Wang, Jue & Shi, Wenxing & Lu, Jun, 2022. "High-efficiency cooling solution for exhaust air heat pump: Modeling and experimental validation," Energy, Elsevier, vol. 254(PB).
    4. Li, Wuyan & Li, Xianting & Gao, Yijun & Shi, Wenxing, 2022. "Thermo-economic evaluation for energy retrofitting building ventilation system based on run-around heat recovery system," Energy, Elsevier, vol. 260(C).
    5. Zhou, Dan & Zhang, Yi & Wu, Yuting & Wang, Yunfei & Zhang, Guanmin, 2024. "Research on gas-liquid interface parameters related to thermal performance of frost-free evaporator of air source heat pump," Renewable Energy, Elsevier, vol. 237(PB).
    6. Tomas Kropas & Giedrė Streckienė & Juozas Bielskus, 2021. "Experimental Investigation of Frost Formation Influence on an Air Source Heat Pump Evaporator," Energies, MDPI, vol. 14(18), pages 1-15, September.
    7. Yan, Hongzhi & Hu, Bin & Wang, Ruzhu, 2021. "Air-source heat pump heating based water vapor compression for localized steam sterilization applications during the COVID-19 pandemic," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).

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