Experimental studying on low GWP refrigerant R446A as an alternative to R410A in residential air conditioner.

New low global warming potential refrigerant R446A was developed to replace R410A in residential air conditioner. Theory cycle analysis shows that 10% more displacement compressor was recommended for R446A comparing with R410A. The compressor evaluation shows that R446A was similar to that of R410A, and the COP of R446A was higher than that of R410A when the 10% more displacement compressor was used for R446A.The air conditioner evaluation shows that: the capacity of R446A was similar to that of R410A, the COP was higher than that of R410A when the 10% more displacement compressor was adopted for R446 and control algorithm was optimized. R446A was an alternative refrigerant to R410A used in the residential air conditioner.