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Question
Why people sprinkle water on the roof after a hot sunny day?
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Solution
Evaporation causes cooling!
When water is sprinkled on the roof top or ground it evaporates because of the latent heat of vaporisation leaving behind a cooling effect. in case of ground, this evaporation causes cooling of the surrounding area after some time; whereas in case of roof top the room beneath is cooled.
When water is sprinkled on the roof top or ground it evaporates because of the latent heat of vaporisation leaving behind a cooling effect. in case of ground, this evaporation causes cooling of the surrounding area after some time; whereas in case of roof top the room beneath is cooled.
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