Design of Roll Bond Evaporator for Room Air Conditioner using Eco-friendly Refrigerant, R-32 (DiFluoroMethane)
Every refrigeration and air conditioning appliance uses an evaporator as a heat exchanger device which gives the desired cooling effect. Tube and fin type evaporators are more commonly used in air conditioners. Only domestic refrigerators use Roll bond evaporators as cooling plates. Roll bond evaporator gives more uniform cooling as compared to Tube and fin evaporator. A design of a roll bond evaporator for a room air conditioner, using eco friendly refrigerant R-32 is presented in this paper. Phase out of the refrigerant R-22 is approaching fast. An alternative to R-22 is presented and the design parameters are compared for the two refrigerants.