G - Physics – 21 – D
Patent
G - Physics
21
D
G21D 1/00 (2006.01) F01K 3/18 (2006.01) G21D 5/00 (2006.01)
Patent
CA 2481522
The present invention provides a PWR or CANDU nuclear power plant having a PWR or CANDU type nuclear reactor, main boilers, and a turbine-generator. In addition to a group of main steam boilers, the nuclear power plant has a lower pressure Nuclear Steam Supply System (LPNSSS) connected to primary circuit downstream of main boilers and providing additions! cooling to reactor coolant. The lower pressure steam generated by LPNSSS is used by internal consumers of lower pressure steam. Those consumers include any combination of the following: feed water heaters, steam reheater of the moisture separator and reheater (MSR), LP turbine of main turbine-generator, steam turbine drives of feed water pump, condensate pump, condenser cooling water pump, and reactor coolant pump. It allows to use excessive thermal capacity of the reactor without major modifications to the secondary side of the plant (main boilers, feed water heaters, steam turbine, feedwater pumps, MSR, piping, etc.). The invention can be used for power uprates of existing nuclear power plants, as an alternative for main boiler replacement (due to aging main boilers), or for new construction. Net electrical output can be increased in the range of ~ to 1~°1o depending on selected modification.
Na
Ponomaryova Iryna
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