Differentiate between natural draught and forced draught cooling tower.

Differentiate between natural draught and forced draught cooling tower.
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1 Answer

Answer :

Sr. No.
Natural draught
Forced draught
1 The air flows naturally without fan through tower and provides required cooling
Fan is located at the top of the tower and enters the side of the tower.
2 The air circulation through the tower depends on wind velocity.
The air circulation through the tower depends on fan speed.
3 The cooling Rate and efficiency of tower is less.
The cooling Rate and efficiency of tower is high.
4 It requires large space for same capacity.
It requires less space for same capacity.
5 No power requires due to absence of fan.
Fan requires more power as it handles hot air.
6 The temp. of water coming out from tower cannot be controlled.
The temp. of water coming out from tower can be controlled.
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