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Simulation Study of a Novel Solar Air-Source Heat Pump Heating System Based on Phase-Change Heat Storage

Author

Listed:
  • Panxue Liu

    (College of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Jianhui Zhao

    (College of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Jiamei Chen

    (College of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

Abstract

A traditional solar air-source heat pump heating system cannot effectively utilize solar energy, and it consumes large amounts of energy when operating during cold nights. Accordingly, a conventional heating system has been improved by phase-change heating to form a new phase-change thermal storage solar air-source heat pump heating system. Based on the TRNSYS simulation platform, a heating simulation study of the improved phase-change heating system was carried out in Xi’an City. The results show that the addition of phase-change thermal storage technology allows the heating system to make better use of solar energy, and the efficiency of the solar collector is increased by 5.9%; the presence of the phase-change material effectively reduces the rate of temperature drop inside the water tank, making the water supply temperature more stable; during the whole heating period, the improved phase-change heating system saved 484.91 kWh of operating energy, showing a very good energy-saving effect.

Suggested Citation

  • Panxue Liu & Jianhui Zhao & Jiamei Chen, 2023. "Simulation Study of a Novel Solar Air-Source Heat Pump Heating System Based on Phase-Change Heat Storage," Sustainability, MDPI, vol. 15(22), pages 1-16, November.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:22:p:15684-:d:1275459
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    References listed on IDEAS

    as
    1. Huang, B.J & Lee, C.P, 2004. "Long-term performance of solar-assisted heat pump water heater," Renewable Energy, Elsevier, vol. 29(4), pages 633-639.
    2. Sterling, S.J. & Collins, M.R., 2012. "Feasibility analysis of an indirect heat pump assisted solar domestic hot water system," Applied Energy, Elsevier, vol. 93(C), pages 11-17.
    3. Abdelsalam, M.Y. & Teamah, H.M. & Lightstone, M.F. & Cotton, J.S., 2020. "Hybrid thermal energy storage with phase change materials for solar domestic hot water applications: Direct versus indirect heat exchange systems," Renewable Energy, Elsevier, vol. 147(P1), pages 77-88.
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