The following is the block diagram of Close Cycle Cooling Water (CCCW) and Circulating Water (CW) :
figure 1. CCCW and CW
The function of CCCW is to cool (decrease temperature) oil, bearing or fluid at process equipment. The close cycle cooling water is from demineralization water from Demineralization Water Plant. Due to cool the oil,bearing, or fluid, the temperature of CCCW is increase. To cool the temperature, CCCW is cooled by CCCW Heat Exchanger. The hot water is CCCW , whereas the cold water is sea water. Sea water is coming from branch line of Circulating Water ( CW ). The following is the figure of CCCW Heat Exchanger :
figure 2. CCCW Heat Exchanger
The function of CW is to cool outing steam of Turbine LP (Low Pressure). The CW ( Circulating Water) is from Sea Water which is pumped by Circulating Water (CW) Pump. The place of cooling process is in Condensor. Steam will convert to liquid phase (condensate). The figure of Condensor is below:
figure 3. Condensor
The cooling water discharge is going to outfall (sea water). The main monitoring parameter of cooling water discharge is free residual chlorine (less than 0.2 mg/l) and temperature ( less than 35 0C).
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