制冷剂
性能系数
全球变暖潜力
热泵
热力学
环境科学
核工程
化学
热交换器
温室气体
工程类
生态学
物理
生物
作者
Heegyu Maeng,Jin‐Young Kim,Soon−Bum Kwon,Yongchan Kim
出处
期刊:Energy
[Elsevier]
日期:2023-10-01
卷期号:280: 128265-128265
被引量:3
标识
DOI:10.1016/j.energy.2023.128265
摘要
Vapor injection heat pumps have been used to mitigate performance degradation under severe operating conditions. Low-global-warming-potential (GWP) refrigerants have been used to replace R134a in heat pumps to comply with F-gas regulations. However, experimental and optimization analyses of vapor-injection heat pumps with low-GWP refrigerants are limited in terms of injection conditions. In this study, the energy and environmental performance of vapor-injection heat pumps containing low-GWP refrigerants were experimentally investigated under various injection conditions. The capacity and coefficient of performance (COP) of the vapor-injection heat pumps using R152a and R1234yf were optimized and compared to those using R134a under various injection conditions. The optimized vapor-injection heat pump using R152a increased the heating and cooling COPs by 5.7% and 1.3%, respectively, compared to those using R134a because of its lower power consumption. In addition, the life-cycle climate performance (LCCP) of the optimized vapor-injection heat pumps using R152a and R1234yf were 4.7% lower and 3.0% higher, respectively, than those using R134a under practical conditions. Overall, R152a is recommended as a preferred alternative for vapor-injection heat pumps because of its high COP and low LCCP.
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