R516A与R134a在水冷冷水机组的性能对比研究  

Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers

作　　者：李雄亚 滑雪 郭晓林 Li Xiongya;Hua Xue;Guo Xiaolin(Foreign Environmental Cooperation Center of the Ministry of Ecology and Environment,Beijing,100035,China)

机构地区：[1]生态环境部对外合作与交流中心,北京100035

出　　处：《制冷学报》2024年第6期83-90,共8页Journal of Refrigeration

摘　　要：R516A是水冷冷水机组领域R134a制冷剂的新型替代品之一,通过单级压缩热力学循环对比分析了R516A与R134a的COP、排气温度等参数,在分别充注R134a和R516A的小型水冷冷水机组上开展了名义工况和变工况下的性能对比实验,研究了水冷冷水机组使用R516A替代R134a的成本变化。结果表明:R516A理论循环的COP比R134a低1.5%,排气温度比R134a低4.9~6.0℃;在名义工况下,R516A机组性能较R134a机组有一定的差距,COP相差4.9%~7.2%;在变工况下,R516A机组性能与R134a机组基本相当,COP差距缩小至0.5%~2.3%;因R516A具有弱可燃性,R516A机组成本比R134a机组增加10%~15%。R516A is one of the new substitutes for R134a refrigerant in water-cooled chillers.The COP(coefficient of performance)and discharge temperatures of R516A and R134a are compared through a single-stage vapor compression cycle.Under nominal and variable operating conditions,the performances of a small water-cooled chiller charged with R134a and R516A are tested and compared.The cost changes of replacing R134a with R516A in the water-cooled chiller are discussed.The conclusions indicate that,in the theoretical cycle,the COP of R516A is 1.5%lower than that of R134a,and the discharge temperature is 4.9-6.0℃lower than that of R134a.Under nominal operating conditions,there is a certain performance gap between the R516A chiller and the R134a chiller,with a COP difference of 4.9%-7.2%.Under variable operating conditions,the performance of the R516A chiller is basically equivalent to that of the R134a chiller,and the COP gap is reduced to 0.5%-2.3%.Owing to the mild flammability of R516A,the cost of the R516A chiller is 10%-15%higher than that of the R134a chiller.

关 键 词：性能对比 R516A 水冷冷水机组 制冷剂替代 

分 类 号：TB611[一般工业技术—制冷工程] TB612