Performance evaluation of window air conditioner by incorporating evaporative cooling system on the condenser

Reduction of energy consumption is a major concern in the vapour compression refrigeration cycle especially in the area with very hot weather conditions (about 42-45 °C) and also in summer conditions because it exist for some 6-8months, where window-air-conditioners are usually used to cool homes. In this weather condition, the performance of air cooled condenser in window-air-conditioners decrease sharply and electrical power consumption increase considerably. In order to improve the performance of window air conditioner by enhancing heat transfer rate in the condenser. A new design with high commercialization potential for incorporating of evaporative cooling in the condenser of window-air-conditioner is introduced and experimentally investigated in this paper. A real window type air conditioner is used to test the innovation by putting two cooling pads in both sides of the window type air conditioner and injecting water on them in order to cool down the air before it passing over the condenser. The experimental results reveals that thermodynamic characteristics of new system i.e. Evaporative Cooling System are considerably improved and power consumption decreases by about 8% and the coefficient of performance increases by about 14.25%.