Question

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

Answer 1

A desert cooler cool 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 higher rate of evaporation it gives better cooling effect

Answer 2

in a desert cooler hot and dry air passes through wet pads of wood shavings. water takes heat from the hot air and evaporates. The evaporation of water cools the pads and the circulating water.As a result the incoming air also gets cooled down