Variable Speed Drive Cooling Tower Fan

The direct drive solution offers the benefits of variable speed control and eliminates the cost and maintenance required for traditional gearboxes or belted solutions.

Variable speed drive cooling tower fan.

The motor speed is typically 1 800 rpm s. Your cooling tower fan motors may offer savings you ve not yet uncovered. A fan running at 80 speed will consume only 50 of the power of a fan running at full speed. The fan couples directly to the motor and is controlled by a unique ac drive to provide optimal speed and.

Operating requirements for a cooling tower may include the ability to start and stop the fan change the fan speed based on the sump water temperature and possibly change the fan direction. Direct drive motor and vsd packages can be used either in wet or dry cooling towers air cooled condensers acc of air cooled heat exchangers ache. A variable speed drive vsd controls the speed of the high torque direct drive motor for optimal fan operation. For example in extreme cold weather conditions tower icing can be averted by running the fan at a slower than normal speed or back running the fan at.

Variable speed drive on cooling tower fans. Drives and cooling tower fan motors reduced power consumption is a common goal for all of us. If we were to consider the significance of the power savings using variable frequency drives on your cooling tower and the inherent operating benefits vfd s bring to a. A minimum speed of 20 25 is usually possible on an existing motor.

Abb direct drive motor and variable speed drive packages for industrial cooling replace the gearbox driveshaft and induction motor typically used in industrial cooling fans. Other way is to keep the same cooling tower and install variable frequency drive vfd on cooling tower fans so that we can increase fan speed hence increase air flow to get the required cooling and reduced cooling water supply temperature. While tower designs vary from manufacturer to manufacturer fans are always used to move air through the cooling tower cooling the process water. The mechanical components of a cooling tower fan are made up of motor gearbox drive shaft disc couplings and fan impeller.

Most of the duties in our cooling tower system only have manual valves. However when a gearbox is used the. For direct connected or belted cooling tower fans this minimum speed is usually not a concern. Offer high torque direct drive motors for cooling tower applications.

One way is to increase capacity of cooling tower by installing another cooling tower cell. Cooling towers are used in both commercial and industrial applications. The paper presents variable speed drive vsd structures for automatic speed regulation of cooling tower fans in order to maintain a constant temperature for the circulated technological water. There are only two duties in which we have flow control valves to control the process temperature by varying the cooling water flow through the heat exchanger.

A major advantage of this method of speed control is its inherent adjustability.