What is evaporative cooling : Evaporative cooling, otherwise known as adiabatic cooling, works on the principle of water evaporation through which the air is cooled down to a comfortable temperature. The water is evaporated with the help of air stream and the evaporated water is then added to the air stream thus giving the cold effect.
One stage evaporative cooling : Process line 1 : The air is cooled with single stage cooling method, directly adding water to the air steam, hence increasing the moisture level of the air, as well as cooling because of adding moisture to the air. The air after cooling contains almost 15.0 grams of water per Kg of air (15.0 g/Kg).
Two stage evaporative cooling
Process line 3 (Indirect evaporative cooling): In this process, the air is cooled in two stages, first is line 3, known as Indirect evaporative cooling. The air is passed through a heat exchanger, where, it is cooled without adding water, hence cooling the air sensibly.
Process line 4 (Indirect evaporative cooling) : This is conventional cooling, also known as direct evaporative cooling, the air, after being cooled in heat exchanger, indirectly, is cooled here with addition of water.
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