Experimental Research of Performance on Dual Source Heat Pump Water Heater Using Air and Water

Author(s):  
Xingwang Zhu ◽  
Xueli Nie ◽  
Zhi-min Guo ◽  
Yugui Su
Energies ◽  
2018 ◽  
Vol 11 (5) ◽  
pp. 1205 ◽  
Author(s):  
Zhongchao Zhao ◽  
Yanrui Zhang ◽  
Haojun Mi ◽  
Yimeng Zhou ◽  
Yong Zhang

2017 ◽  
Vol 206 ◽  
pp. 784-792 ◽  
Author(s):  
Deqiu Zou ◽  
Xianfeng Ma ◽  
Xiaoshi Liu ◽  
Pengjun Zheng ◽  
Baiming Cai ◽  
...  

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2811 ◽  
Author(s):  
Xiang Gou ◽  
Shian Liu ◽  
Yang Fu ◽  
Qiyan Zhang ◽  
Saima Iram ◽  
...  

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.


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