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

Energies

Yingfan Liu¹  Yang Fu¹  Shian Liu¹  Saima Iram¹  Qiyan Zhang¹  Xiang Gou¹ 

[1] School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China;

关键词: dual source;    heat pump;    preheater;    coefficient of performance (COP);   

DOI  :  10.3390/en11102811

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown