Question

desert cooler is effective on a hot dry day but not on human day explain why. give reason​

Answer 1

Answer:

A desert cooler is effective on a hot dry day because, on a hot dry day, temperature is high but humidity is low, which helps in BETTER evaporation. Due to the higher rate of evaporation, it gives a better cooling.

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Explanation:

Answer 2

The particles of liquid in desert cooler absorb energy from the surrounding to regain the energy lost during evaporation. In summer this is fast. Hence desert cooler cool better in a hot dry day.