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FEEDWATER TEMPERATURE CONTROL METHODS AND SYSTEMS

United States Patent Application

20140226776
A1
View the Complete Application at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A system for controlling the power level of a natural circulation boiling water nuclear reactor (NCBWR) may include a heating subsystem for heating feedwater flowing into an annulus of the NCBWR to increase the temperature of recirculation water flowing through the core above a predetermined recirculation water operating temperature. Additionally the system may include a temperature sensor operable to sense the temperature of the feedwater flowing into the annulus. The temperature sensor is communicatively connected to a temperature controller operable to command the heating subsystem to increase the temperature of the feedwater flowing into the annulus to a requested temperature above a predetermined operating temperature of the feedwater flowing into the annulus. By increasing the temperature of the feedwater flowing into the annulus, the temperature of the recirculation water is increased above the predetermined recirculation water operating temperature causing a reduction in the power level generated by the NCBWR core.
MOEN, Stephan Craig (Wilmington, NC), NOONAN, Jack Patrick (Wilmington, NC), SAHA, Pradip (Wilmington, NC)
GE-HITACHI NUCLEAR ENERGY AMERICAS LLC (Wilmington NC)
14/ 257,608
April 21, 2014
FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] The present invention was made with government support under contract number DE-FC07-07ID 14778, which was awarded by the U.S. Department of Energy. The government has certain rights in the present invention.