An experimental investigation of refrigerant mixture R32/R290 as drop-in replacement for HFC410A in household air conditioners

作者：Tian Qiqi; Cai Dehua; Ren Liang; Tang Weier; Xie Yuanfei; He Guogeng^*; Liu Feng

来源：International Journal of Refrigeration, 2015, 57: 216-228.

DOI：10.1016/j.ijrefrig.2015.05.005

• Mixed refrigerant R32/R290
• R410A
• Refrigerant charge amount
• COP
• Micro-channel heat exchanger

In the present paper, the refrigerant mixture R32/R290 (68%/32% by weight) is investigated as the drop-in replacement for R410A in household air conditioners. The GWP of it is only 22% of that of R410A. Theoretical and experimental investigations are conducted on the performance of the air conditioners working with both R32/R290 and R410A. Experimental results show that the refrigerant charge amount of R32/R290 is reduced by 30.0%-35.0%; the cooling and heating capacities are increased by 14.0%-23.7%. For further reducing charge amount and flammability, the micro-channel heat exchanger (condenser) is employed to replace the finned tube one. Compared with the R32/R290 system using finned tube heat exchanger, the R32/R290 charge amount and the power consumption are reduced by 34.1% and 0.4%, respectively; the cooling capacity and the COP are increased by 6.4% and 6.8%, respectively.

• 出版日期2015-9
• 单位华中科技大学