R32用于喷气增焓热泵热水器中可行性研究  

Feasibility of R32 Using in Bihanced Vapor Injection Heat Pump Water Heater

作　　者：汪涛[1] 王芳[1] 陈红群[1] 欧俊彦 余大维 王莹[1] WANG Tao;WANG Fang;CHEN Hong-qun;OU Jun-yan;YU Da-wei;WANG Ying(Institute of Refrigeration and Cryogenic Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)

机构地区：[1]上海理工大学制冷与低温工程研究所,上海200093

出　　处：《建筑节能》2017年第1期139-144,共6页BUILDING ENERGY EFFICIENCY

摘　　要：理论分析了R32作为空气源热泵热水器制冷剂的可行性,并设计搭建带有喷气增焓装置的实验系统,分别充注R32和R410A制冷剂进行性能对比测试。实验结果表明:对于本实验系统R410A的最佳充注量为1.4 kg,R32的最佳充注量比R410A减少约25%,且名义工况下R32热泵系统的COP要高出R410A热泵系统约4.2%;低温工况下,采用双级压缩系统的压缩比最高在3左右,有效缓解了常规热泵系统低温工况下压缩比过高的问题;低温工况下,R32热泵系统的COP明显高于R410A热泵系统。The feasibility of using R32as the refrigerant of air source heat pump water heater is expounded in theory.Then the experiment system with enhanced vapor injection device is designed and built up.R32and R410a are charged in the system to compare their performance.The results show that,for the optimal charging quantity of the experimental system,R32filling amount is reduced by about25%than R410A heat pump system.Under the nominal working condition,the COP of R32heat pump system is higher than the R410A heat pump system about4.2%.Under low temperature conditions,the compression ratio o f the two-stage compression system is up to about3,which can effectively alleviate the high compression ratio of conventional heat pump system under low temperature conditions.Under low temperature conditions,the COP of the R32heat pump system is significantly higher than that of the R410A heat pump system.

关 键 词：R32 喷气增焓热泵热水器 性能对比 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]