摘要
对比R32与R410A的基本物性和热力循环性能,并在同一台家用定频热泵空调器上进行性能测试。相对于R410A,在给定工况下,R32的理论循环制冷量最大可提高15%,能效比最大提高6%,容积制冷量和容积制热量增加7%～8.9%。性能测试结果表明,R32系统的制冷剂充注量比R410A系统的减少24%,额定制冷能力和能效比比R410A系统分别提高8%和3.3%,额定制热能力和性能系数也高于R410A系统。理论热力循环分析及性能测试结果均表明,R32制冷性能相对R410A有较大幅度的提高,制热性能比R410A略高或相当,但R32系统的排气温度较高,比R410A系统高出11.5～25.7℃,恶劣工况下排气温度甚至能达到114.9℃。
The thermodynamic properties and performance of theoretic thermodynamic cycle of R32 are compared with that of R410A. The performance tests on an identical residential heat pump air conditioner with constant ratory speed for R32 and R410A are carried out. Compared to R410A, the cooling capacity and energy efficiency ratio （EER） of theoretic thermodynamic cycle of R32 are improved by 15% and 6% at high temperature cooling condition,respectively, and the volumetric cooling capacity and volumetric heating capacity of R32 increase by 7% ~8.9% at the other conditions. The air conditioner performance test results show that the refrigerant charge of R32 system is reduced by 24 % as compared to that of R410A system,and the cooling capacity and EER are improved by 8% and 3.3% at rated cooling condition,respectively, and the heating capacity and COP are higher than that of R410A system at rated heating condition. The theoretic thermodynamic cycle simulation and experimental test results both show that R32 system has higher cooling capacity and EER and comparable heating capacity and COP over R410A system,however,the discharge temperature of R32 system is 1l. 5~25.7 ℃ higher than that of R410A system under tested conditions,and even reachs 114. 9 ℃ at extremely high cooling condition.
出处
《制冷与空调》
2013年第5期35-39,共5页
Refrigeration and Air-Conditioning
