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Experimental Study on the Performance of a Household Dual-Source Heat Pump Water Heater

Author

Listed:
  • Xiang Gou

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Shian Liu

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Yang Fu

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Qiyan Zhang

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Saima Iram

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Yingfan Liu

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
    Department of Comprehensive Management, CNOOC Energy Conservation & Environmental Protection Service Co., Ltd., Tianjin 300452, China)

Abstract

A household dual source heat pump water heater is proposed to utilize the energy of wastewater and air heat in a bathroom. The heat pump system integrates a wastewater source heat pump (WSHP), air source heat pump (ASHP), and a preheater. This aims at energy saving through recovering the heat of wastewater and ventilation air during the bathing process. The experiment was conducted to verify the feasibility of a dual heat source heat pump water heater system in a bath unit. It is found that the system can achieve an average coefficient of performance (COP) of 4.80 and 4.38 with and without preheater, respectively. At a bath water temperature of 40 °C, a flow rate of 6 L/min, and a room temperature of 26.5 °C, the COP of system can reach 6.08, which shows a significantly promising method for energy saving in-house.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2811-:d:176638
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    References listed on IDEAS

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