Question

What is the purpose of a fan in a liquid cooling system?

(a) To disperse engine fumes

(b) To pump cold air over the hot water

(c) To cool the external surface of the engine

(d) To drive airflow when the vehicle speed is low

I got this question during an online exam.

My question comes from Heat Rejection and Cooling in division Nonconventional Engines, Conventional Energy Sources & Cooling System of Automobile Engineering

Answer 1

Right option is (b) To pump cold air over the hot water

The best I can explain: A fan in a liquid cooling system is used to pump cold air over the hot water. The fan is mounted on the impeller spindle which is driven by a suitable belt pulley arrangement.