Question

why does a Desert cooler cool better on a hot dry day?​

Answer 1

Answer:

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

Explanation:

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Answer 2

Evaporation is a cooling process that cools the surroundings. Desert coolers transfer the heat energy from circulating air to water. Water evaporates resulting in the cooling of the surrounding air and this air is circulated. On a hot dry day, the humidity will be low and the temperature will be high.