Essay On Evaporative Cooling

Abstract Now days due to energy crisis and harmful effect to environment, there is more and more urgent need of energy saving in air conditioning and water cooling demands in mainly consideration of all the free cooling techniques. Among them evaporative cooling is well known technique from long time which gives good results and wide number of applications in residential, commercial, agricultural, and institutional buildings to industrial applications like as spot cooling in power plants, foundries, etc. So in this paper the evaporative cooling, it’s potential, and different trends in evaporative cooling are studied, which are environment friendly as it uses only natural energy as latent heat of water. The efficiency and effectiveness of evaporative cooling depends on surrounding climatic conditions which are studied in this paper, faster the evaporation rate we gate maximum

The review covers direct evaporative cooling, indirect evaporative cooling and combined direct-indirect cooling systems. Currently, mechanical vapor compression coolers (MVC) are commercially dominant despite their intensive energy use and low performance in hot climate. In contrast, evaporative cooling systems are more environmentally friendly as they consume less energy and their performance improves as air temperature increases and humidity decreases. However, the main drawback of the evaporative cooling is their high dependency on the ambient air conditions. Since the temperature difference between the dry- and wet-bulb temperatures of the ambient air is the driving force of evaporative cooling. For mild and/or humid climate this difference is small, therefore, leads to limited cooling