Circulating Water Pump is briefly known as CWP. The CWP are used for water circulation through out the system. One CWP have a capacity of 40,000 tones/hour and weight of 126 tones. Its power consumption is about 6 MW (at my place).
Main parts of CWP:
- Pump casing
- Shaft
- Journal and Thrust bearings
- Diffuser
- Impeller
- Electric motor
Application of centrifugal pump in power station:
- Circulating water pump
- Feed water pump
- Condensate pump
- Fire fighting pump
- Demi water pump
- LP and HP heater pump
- Dosing pump etc.
Reciprocating pump:
A reciprocating pump is also known as a positive displacement pump, as it discharges a definite quantity of liquid during the displacement of its piston or plunger.