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Title: Feedwater temperature control methods and systems

Abstract

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.

Inventors:
; ;
Issue Date:
Research Org.:
GE-Hitachi Nuclear Energy Americas LLC, Wilmington, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531396
Patent Number(s):
10163532
Application Number:
14/257,608
Assignee:
GE-Hitachi Nuclear Energy Americas LLC (Wilmington, NC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
DOE Contract Number:  
FC07-07ID14778
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014-04-21
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS

Citation Formats

Moen, Stephan Craig, Noonan, Jack Patrick, and Saha, Pradip. Feedwater temperature control methods and systems. United States: N. p., 2018. Web.
Moen, Stephan Craig, Noonan, Jack Patrick, & Saha, Pradip. Feedwater temperature control methods and systems. United States.
Moen, Stephan Craig, Noonan, Jack Patrick, and Saha, Pradip. Tue . "Feedwater temperature control methods and systems". United States. https://www.osti.gov/servlets/purl/1531396.
@article{osti_1531396,
title = {Feedwater temperature control methods and systems},
author = {Moen, Stephan Craig and Noonan, Jack Patrick and Saha, Pradip},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {12}
}

Patent:

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