A desert cooler cools better on a hot dry day because on a hot dry day temperature is high and humidity is less which helps in better evaporation. Due to the higher rate of evaporation it gives better cooling effect.
because on hot dry day our body will sweat and when the desert cooler
starts it will evaporate our sweat and then we feel more cool that's why
desert cooler cools better on a hot dry day.
when anything evaporate it will give cooling effect on the surface.
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