Abstract
Condensate pumps provide the motive force to deliver condensate from the hotwell to the deaerator storage tanks. Advanced Power Reactor 1400 (APR1400) is comprised of three 50% capacity motor drive...
Highlights
The condensate and feedwater systems are designed to deliver the condensate water from the main condenser to the steam generator (SG)
The new approach of energy saving calculation for condensate pumps has been introduced in this paper when Variable Frequency Drives (VFDs) will be used to drive some condensate pumps for the purpose of energy saving, and its results were compared with the Electrical Transient Analysis Program (ETAP) model results as justification of its validity and credibility
This study indicates that the significant energy saving is real in the application of VFDs for condensate pumps
Summary
The condensate and feedwater systems are designed to deliver the condensate water from the main condenser to the steam generator (SG). The condensate system consist of three 50% capacity motor-driven pumps (two operating and one standby) deliver condensate from the condenser hotwells to the deaerator through the condensate polisher, a steam packing exhauster, and three stages of LP feedwater heaters (Figure 1). Each condensate pump (CP) supplies 11,000 gpm with 1100 ft of head (approximately 477psi) [3].The third pump is prepared as a standby and starts automatically on the loss of one of the two operating pumps, allowing the plant to remain at 100 percent power [2].The LCVs receive the control signals from the level transmitters which provide the indication and monitors the level of the condensate inside the two deaerator storage tanks (DSTs), A and B with capacity of 450,000 gal each. In case of valve malfunction, the operator has the access to operate the LCVs manually
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