Answers

2016-04-24T19:56:26+05:30
In costal areas the amount of humidity in air is quite high, as rate of evaporation is lesser in humidity therefore they are not used in coastal areas. 
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2016-04-24T20:17:05+05:30
Just because , in coastal areas humidity is high in air , evaporation in humidity is .that is why desert coolers r not used in coastal areas
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