1. Single Pump Tank Sets: Single pump tank set can be used where the process water flow is constant and the process flow is the same as the chiller.
Not recommended for cooling towers in a cold climate where the cooling tower can freeze.
2. Double Pump tank Sets: are the most common type of tank set and has two pumps. One pump is dedicated to the chiller or cooling tower to maintain a constant flow required by them to ensure maximum efficiency and safe operation.
The second pump is dedicated to the process to supply higher or lower flows than the chiller or cooling tower would normally allow, varying process flows and with higher water pressure than required by the chiller or cooling tower.