R449A制冷剂应用于压缩冷凝机组的性能研究  

Performance analysis of refrigerant R449A in the compressor condensing unit

作　　者：王汝金 谢江 赵盼盼 茹志鹏 张秀平 程立权 许杨峰 Wang Rujin;Xie Jiang;Zhao Panpan;Ru Zhipeng;Zhang Xiuping;Cheng Liquan;Xu Yangfeng(State Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute,Hefei 230088,China;Emerson Climate Technologies Suzhou Co.,Ltd,Suzhou 215021,China;Chongqing Midea General Refrigeration Equipment Co.,Ltd,Chongqing 401336,China;The Chemours Chemical(Shanghai)Co.,Ltd.,Shanghai 230088,China)

机构地区：[1]合肥通用机械研究院有限公司压缩机技术国家重点实验室,合肥230088 [2]艾默生环境优化技术(苏州)有限公司,苏州215021 [3]重庆美的通用制冷设备有限公司,重庆401336 [4]科慕化学(上海)有限公司,上海201204

出　　处：《低温与超导》2019年第11期62-65,71,共5页Cryogenics and Superconductivity

摘　　要：R449A是一种HFO类非共沸混合制冷剂,物性参数与R404A接近、但GWP值大幅减小。选择R449A作为原R404A压缩冷凝机组的替代制冷剂开展直接替代试验研究,并进行了R449A与原型机用润滑油和辅料的相容性验证。研究结果表明:在对原机组不做任何改动,以吸气侧中点为蒸发温度基准,采用R449A制冷剂的压缩冷凝机组与原R404A机组相比运行性能略有优势,替代潜力较大。R449 A is a HFO non-azeotropic mixture refrigerant, which has similar thermodynamic properties to R404 A, but its GWP value is greatly reduced. The R449 A was selected as the substitute refrigerant for the original R404 A compressor condensing unit to carry out the direct replacement test study, and the compatibility of R449 A and the prototype lubricants and accessories was verified. The results show that without any changes to the prototype unit, the compressor condensing unit using R449 A refrigerant has slight advantages and large substitution potential compared with the original R404 A unit based on the midpoint of the suction side as the evaporation temperature.

关 键 词：R449A R404A 压缩冷凝机组 相容性 制冷剂替代 

分 类 号：TB657.1[一般工业技术—制冷工程]