A cooling tower is a heat exchanger system that removes […]
A cooling tower is a heat exchanger system that removes waste heat from a process. The cooling tower fan motor is a component of the induced draft cooling tower, used to drive the cooling fan. Cooling tower motors are designed to operate under harsh environments such as in the presence of moisture and at elevated temperatures.
There are generally two types of cooling fan motors, namely induction motors and permanent magnet motors. Permanent magnet motors are increasingly being preferred over induction motors as they do not require a gearbox and thus, reduce mechanical losses and provide higher performance.
Cooling tower fan motors are attached with several protection systems such as earthly fault relays and over load relays to improve the operational safety.
Cooling tower fan motors used for commercial/ institutional applications are of a lower capacity as compared to the cooling tower fan motors used for industrial applications. Among industrial applications, power plants require cooling tower fan motors of heavy capacities, generally in the range of 250 – 350 HP. Cooling tower fan motors are generally designed according to NEMA standards.