Question

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

Answer 1

In a desert cooler hot and dry air passes through wet pads of wood wool .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 here also get cooled

Answer 2

desert cooler cool better on a hot dry day because of the humidity of desert match with the low rainfall of sandy area that's why no more cool in summer this s medium