Question

When is the cooling tower preferred?

(a) When there is plenty of water available

(b) When there is scarcity of water

(c) When the plant is of large capacity

(d) When the amount of flue gas produced is very high

This question was posed to me in an interview for job.

Question is taken from Cooling Water System, Air & Fuel Gas System topic in division Steam Power Plant of Energy Engineering

Answer 1

Right answer is (b) When there is scarcity of water

To explain: Cooling tower is preferred when there is scarcity of water. Instead of circulating the water directly, it is sprinkled in the cooling tower to condense the exhausted steam coming from the turbine. The loss of water due to evaporation is compensated by supplying water directly from the river.