Question

why does a desert cooler cool better on a hot dry day ?

Answer 1

because hog air goes outside through its wed pad shave and the water inside evaporates and became cool and give us cool air .

Answer 2

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.