Describe with neat sketch working of natural draft cooling towers.

Describe with neat sketch working of natural draft cooling towers.
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Natural draft cooling tower: -In natural draught cooling tower, the circulation of air is produced by the pressure difference of air inside the tower and outside atmospheric air Hot cooling water falls down in a form of sprays and atmospheric air enters from bottom of the tower. -The falling water gives up its heat to the rising column of air and temperature of circulating water reduces -In natural draught cooling tower, hot water is pumped to ring troughs. Trough sprays water in the form of droplets, which is placed at bottom of towers. -Most advantage is of no use of fan, for air circulation. An air circulation takes place by the pressure difference of air inside and outside of cooling tower (natural flow).

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