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Why does a desert cooler cool better on a hot dry da... - Science
Question
Why does a desert cooler cool better on a hot dry day?
Answer
A desert cooler works on the principle of evaporation, and evaporation causes cooling.
It cools better on a hot, dry day because:
High Temperature: On a hot day, the heat increases the rate of evaporation of water.
Low Humidity (Dry): On a dry day, the amount of water vapor in the air is low, which also increases the rate of evaporation.
Since the rate of evaporation is highest under these conditions, the cooling effect produced is much greater.