CO2 is a HCFCs substitution in HPMP of industrial and commercial refrigeration (ICR) sector in China. In this paper

the applicability of natural refrigerant CO2 application in ICR is analyzed by standards

testing

replacement cost and market prospect. The conclusion indicates that: 1) based on the leaking and suffocation risk charging limit

CO2 can be used in all refrigeration systems theoretically in relevant standards; 2) under ultra-low temperature condition and nominal condition in GB/T 21362—2008

the COP of CO2 heat pump water heater is 7.9% and 10.7% higher than R410A unit

and the performance of CO2 air-cooler evaporator is better than traditional unit; 3) the replacement cost from R22 heat pump and refrigeration system to CO2 system will increase 100%-200% and 20%-30%

respectively; 4) CO2 has well application potential in heat pump water heater and refrigeration equipment area of ICR

but the refrigeration cycle efficiency promotion

high efficiency components development and operation security protection under high pressure need further research.