Performance Analysis of Heat Exchanger For Evaporative Cooling

Abstract

This paper discuss about the development and analysis of evaporative heat exchanger to cool drinking water. The electrical energy required for cooling appliances is considerable and use of refrigerant increase the ozone depletion. This system is developed to cool the water coming from water tank and make it drinkable directly without cooling it with other secondary coolers like refrigerator or any other cooling method which consumes electricity. So the evaporative heat exchanger is developed by mounting cooling coil after the tank and the hot water coming from tank which has temperature of range 340C-380C in summer days is supplied through the cooling coil, this cooling coil is covered by using wick material which evaporates sprinkled water by reducing its partial pressure and heat required for evaporation of water is taken by water flowing through cooling coil and the principle of evaporative cooling is obtained and then the temperature of water is reduced up to desired value 240C-280C which can be drink directly. System is beneficial in such way that it does not consume any electricity or any other external energy source, as the natural evaporating principle is used. From this experimental analysis we observe that as there are number different parameters like wick material, heat exchanger dimensions, flow rate, which affects the performance of heat exchanger.