Experimental research on vapor-injected water source heat pump using R1234ze(E)

被引：8
|
作者：
Wei, Falin [1 ]
Wang, Baolong [1 ]
Cheng, Zuo [2 ]
Cui, Mengdi [1 ]
机构：
[1] Tsinghua Univ, Dept Bldg Sci, Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China
[2] Beijing Inst Mech Equipment, Beijing 100854, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2023年 / 229卷
关键词：
Economizer systems; Alternative refrigerants; WSHP; ENERGY PERFORMANCE EVALUATION; TRIFLUOROACETIC-ACID; R1234YF; R134A; ALTERNATIVES; COMPRESSOR; SYSTEM; R450A;
D O I：
10.1016/j.applthermaleng.2023.120595
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
As a low GWP alternative refrigerant to R134a, the direct use of R1234ze(E) in water source heat pumps leads to significant performance degradation. Vapor injection combined with R1234ze(E) is a possible solution to this problem. In this study, a vapor-injected water source heat pump using R1234ze(E) as the working fluid was experimentally investigated. The results indicate that vapor injection using a flash tank or internal heat exchanger can significantly increase the coefficient of performance and heating capacity of the proposed heat pump. The improvements in the heating capacity and coefficient of performance corresponded to 22.3% and 8.1% for the flash tank system, and 19.5% and 7.3% for the internal heat exchanger system compared with the no-injection system.
引用
收藏
页数：10
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