A Review Paper on Evaporative Cooling Methods

Mechanical Engineering

Evaporative cooling is an energy efficient and environmentally friendly air conditioning technology. Evaporative cooling has a great many advantages over other cooling processes. Due to the non-pollution creating environment. It is considered as one of the suitable ways to cool one's workplace or living place, because of the fact that it uses fresh air and replaces the air time to time to maintain room temperature. Due to recirculation of air, smells and allergens are expelled out. It is based on a natural process of air cooling by water, it won’t dry out the air, or irritate human skin, eyes, or other external parts of the human body. Moreover, evaporative cooling is an inexpensive cooling option which enhances the lifestyle of people. However, evaporative cooling requires an abundant water and is efficient when the relative humidity is low. Experimental and theoretical research work on feasibility studies, performance test, and optimization as well as heat load calculations are considered and then reviewed in detail. Always an attempt is made to obtain the saturation efficiency at optimum water consumption rate. The feasibilities of evaporative cooling under different climates, efficiencies of various evaporative cooling equipment and critical parameters and techniques for improving the efficiencies as well as numerical modeling of evaporative cooling processes. Keywords: Evaporative cooling, Saturation efficiency.

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