Discussion and analysis of environmentally friendly refrigerant R404A as a substitute for R22 with different circuit number

The refrigerant R22 has great damage to the ozone layer. R404A is currently mainstream environmentally friendly approved and recommended by most countries in world, zero Based on this, performance of heat exchangers with different inlet qualities circuit number were simulated compared EVAP-COND software. results show that capacity evaporator was greater than R22. Moreover, difference R410A drops first, then it rises. flow path circuits 2 had largest exchange rate. rates are 4.40kW 4.50kW, respectively. amount larger R22, decreases first increases increase branches, maximum 4.41%. can be used as a substitute for higher It more saves energy.