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

Xiang Gou, Shian Liu, Yang Fu, Qiyan Zhang, Saima Iram and Yingfan Liu
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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

Energies, 2018, vol. 11, issue 10, 1-18

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.

Keywords: dual source; heat pump; preheater; coefficient of performance (COP) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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