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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) is disclosed. The system, in accordance with an example embodiment of the present invention, may include a controller configured to control a power output level of the NCBWR by controlling a heating subsystem to adjust a temperature of feedwater flowing into an annulus of the NCBWR. The heating subsystem may include a steam diversion line configured to receive steam generated by a core of the NCBWR and a steam bypass valve configured to receive commands from the controller to control a flow of the steam in the steam diversion line, wherein the steam received by the steam diversion line has not passed through a turbine. Additional embodiments of the invention may include a feedwater bypass valve for controlling an amount of flow of the feedwater through a heater bypass line to the annulus.

Inventors:
; ;
Issue Date:
Research Org.:
GE-Hitachi Nuclear Energy Americas LLC, Wilmington, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1129378
Patent Number(s):
8,705,682
Application Number:
11/777,377
Assignee:
GE-Hitachi Nuclear Energy Americas LLC (Wilmington, NC)
DOE Contract Number:  
FC07-07ID14778
Resource Type:
Patent
Resource Relation:
Patent File Date: 2007 Jul 13
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS

Citation Formats

Moen, Stephan Craig, Noonan, Jack Patrick, and Saha, Pradip. Feedwater temperature control methods and systems. United States: N. p., 2014. 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/1129378.
@article{osti_1129378,
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) is disclosed. The system, in accordance with an example embodiment of the present invention, may include a controller configured to control a power output level of the NCBWR by controlling a heating subsystem to adjust a temperature of feedwater flowing into an annulus of the NCBWR. The heating subsystem may include a steam diversion line configured to receive steam generated by a core of the NCBWR and a steam bypass valve configured to receive commands from the controller to control a flow of the steam in the steam diversion line, wherein the steam received by the steam diversion line has not passed through a turbine. Additional embodiments of the invention may include a feedwater bypass valve for controlling an amount of flow of the feedwater through a heater bypass line to the annulus.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {4}
}

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