Pump

Pumps are installed in cooling circuits to provide the pressure necessary to compensate for frictional losses, minor losses and differences in elevation for dense fluids, when delivering a certain pressure at a desired point in the circuit. Most cooling circuits are driven by centrifugal pumps.

Centrifugal pumps consist of one or more rotating impellers contained in a casing. The centrifugal force of rotation generates the pressure in the liquid as it goes from the suction side to the discharge side of the pump. Centrifugal pumps have a wide range of operating flow rates with fairly good efficiency.