Comparison of air-source heat pump water heater performance with transcritical cycle using CO2, R170 and R41 as refrigerant

被引：0
|
作者：
Wang D. [1 ]
Liu Y. [1 ]
Chen Z. [1 ]
Kou Z. [1 ]
Lu Y. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan, 243002, Anhui
来源：
Huagong Xuebao/CIESC Journal | 2020年 / 71卷
关键词：
ASHPWH; CO[!sub]2[!/sub; Enthalpy; Exergy; Performance; R170; R41; Transcritical cycle;
D O I：
10.11949/0438-1157.20191137
中图分类号：
学科分类号：
摘要：
On the basis of an air-source heat pump water heater (ASHPWH) system, a thermodynamic model used to calculate system performance is developed. Then, the performances and exergy efficiencies of a transcritical cycle with CO2, R170 and R41 are investigated and compared. The results indicate that the COPheat and exergy efficiencies of R41 (R170) system are about 31.77% (4.9%) and 23.34% (3.6%) higher than that of CO2 system under the same condition. R41 and R170 also have obvious advantages in increasing the heating capacity. Moreover, the optimum high pressure of system with R41 (R170) is more than 35% (43%) lower compared to that with CO2. So, besides CO2, R41 and R170 are also promising refrigerants for an ASHPWH system. © All Right Reserved.
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页码：51 / 56
页数：5
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