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US 2015/0033742 A1Published application
Method for improving thermal-cycle yield in nuclear power plants
AssigneeSener, Ingenieria Y Sistemas, S.A.
InventorsBorja Herrazti Garcia, Antonio Lopez Garcia, Irune Gutierrez Larrañaga
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Abstract
The present invention relates to a method for increasing the efficiency of electric power generation in pressurized water nuclear power plants, comprising steps of superheating a main steam and reheating the reheated steam by means of an auxiliary circuit, where the streams for the superheating and the reheating work in parallel.
Claims4
Method for increasing the efficiency of electric power generation in pressurized water nuclear power plants, comprising the following steps:
- a. the saturated or slightly wet steam originating from the steam generator (SG) is superheated before entering a steam turbine (ST) with several bodies;
- b. the steam reheated with steam from a high pressure (HP) turbine extraction, is again reheated using live-steam from the reactor;
- c. the steam reheated in the preceding step is again reheated, exchanging heat with a thermal fluid at a higher temperature;
- d. the reheated steam of step c is expanded in the low (LP) body of the steam turbine;
- e. the expanded steam of step d is condensed and the condensed water is recirculated to the steam generators after heating with water steam originating from turbine extractions
- characterized in that the superheating in a and the reheating in c are performed by means of an auxiliary thermal fluid circuit with the streams for the superheating and the reheating working in parallel.
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Dependencies are inferred from the claim text.