Question

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

Answer 1

Answer:

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.

Answer 2

$\huge\underline\mathrm{Heya!}$

In a desert cooler, hot dry air is sucked through wet pads of wooden shaving. Water takes up heat from hot air as it evaporates. Due to faster rate of evaporation, a desert cooler cools the air better on a hot dry day