The following design data is required to select cooling towers:

Flow Rate in GPM

Range of cooling in °F (T1 – T2)

Area Wet Bulb Temperature in °F (Twb)

The Design Heat Load is determined by the Flow Rate, and the Range of cooling, and is calculated using the following formula:

Heat Load (BTU/Hr) = GPM X 500 X ° Range of cooling

If the Heat Load, and one of the other two factors are known (either the GPM or the ° Range of cooling) the other can be calculated using this formula.

GPM = Heat Load (BTU/Hr) / 500 X ° Range of cooling

° Range of cooling = Heat Load (BTU/Hr) / 500 X GPM

The Design GPM and the ° Range of cooling are directly proportional to the Heat Load.

For More information on Delta Cooling towers go to Flow-Tech.com

Then click on the sizing Chart.