Question

why is desert cooler cool on a better hot dry day​

Answer 1

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Evaporation depends on the amount of water vapour present in air (humidity). ... On a hot dry day, the amount of water vapour present in air is less. Thus, water present inside the desert cooler evaporates more, thereby cooling the surroundings more. That is why a desert cooler cools better on a hot dry day.

Answer 2

Explanation:

Evaporation depends on the amount of water vapour present in air (humidity). ... On a hot dry day, the amount of water vapour present in air is less. Thus, water present inside the desert cooler evaporates more, thereby cooling the surroundings more. That is why a desert cooler cools better on a hot dry day.