Design of Roll Bond Evaporator for Room Air Conditioner

Abstract

The Evaporator is a heat exchanger which gives the desired refrigeration effect in all refrigeration and air conditioning appliances. The evaporators used in air conditioners are predominantly tube and fin type. Domestic refrigerators use roll bond evaporators. This paper presents design of a roll bond evaporator for a room air conditioner. The design is carried out for a 1.5 TR room air conditioner which uses R-22 (Mono Chloro Di Fluro Methane) as refrigerant. The refrigerant enters evaporator in liquid phase and leaves in vapor phase. The design takes into consideration "Two-phase flow" of the refrigerant.