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Title: Control of Advanced Reactor-Coupled Heat Exchanger System: Incorporation of Reactor Dynamics in System Response to Load Disturbances

Abstract

We present an alternative control schemes for an Advanced High Temperature Reactor system consisting of a reactor, an intermediate heat exchanger, and a secondary heat exchanger (SHX) in this paper. One scheme is designed to control the cold outlet temperature of the SHX (T co) and the hot outlet temperature of the intermediate heat exchanger (T ho2) by manipulating the hot-side flow rates of the heat exchangers (F h/F h2) responding to the flow rate and temperature disturbances. The flow rate disturbances typically require a larger manipulation of the flow rates than temperature disturbances. An alternate strategy examines the control of the cold outlet temperature of the SHX (T co) only, since this temperature provides the driving force for energy production in the power conversion unit or the process application. The control can be achieved by three options: (1) flow rate manipulation; (2) reactor power manipulation; or (3) a combination of the two. The first option has a quicker response but requires a large flow rate change. The second option is the slowest but does not involve any change in the flow rates of streams. The final option appears preferable as it has an intermediate response time and requires onlymore » a minimal flow rate change.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); USDOE Office of Environmental Management (EM)
OSTI Identifier:
1256148
Alternate Identifier(s):
OSTI ID: 1395025
Grant/Contract Number:  
#128504; AC07-05ID14517
Resource Type:
Published Article
Journal Name:
Nuclear Engineering and Technology
Additional Journal Information:
Journal Name: Nuclear Engineering and Technology Journal Volume: 48 Journal Issue: 6; Journal ID: ISSN 1738-5733
Publisher:
Elsevier
Country of Publication:
Korea, Republic of
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; Advanced nuclear reactors; Control system response; Heat exchangers; Load disturbances

Citation Formats

Skavdahl, Isaac, Utgikar, Vivek, Christensen, Richard, Chen, Minghui, Sun, Xiaodong, and Sabharwall, Piyush. Control of Advanced Reactor-Coupled Heat Exchanger System: Incorporation of Reactor Dynamics in System Response to Load Disturbances. Korea, Republic of: N. p., 2016. Web. doi:10.1016/j.net.2016.05.001.
Skavdahl, Isaac, Utgikar, Vivek, Christensen, Richard, Chen, Minghui, Sun, Xiaodong, & Sabharwall, Piyush. Control of Advanced Reactor-Coupled Heat Exchanger System: Incorporation of Reactor Dynamics in System Response to Load Disturbances. Korea, Republic of. doi:10.1016/j.net.2016.05.001.
Skavdahl, Isaac, Utgikar, Vivek, Christensen, Richard, Chen, Minghui, Sun, Xiaodong, and Sabharwall, Piyush. Thu . "Control of Advanced Reactor-Coupled Heat Exchanger System: Incorporation of Reactor Dynamics in System Response to Load Disturbances". Korea, Republic of. doi:10.1016/j.net.2016.05.001.
@article{osti_1256148,
title = {Control of Advanced Reactor-Coupled Heat Exchanger System: Incorporation of Reactor Dynamics in System Response to Load Disturbances},
author = {Skavdahl, Isaac and Utgikar, Vivek and Christensen, Richard and Chen, Minghui and Sun, Xiaodong and Sabharwall, Piyush},
abstractNote = {We present an alternative control schemes for an Advanced High Temperature Reactor system consisting of a reactor, an intermediate heat exchanger, and a secondary heat exchanger (SHX) in this paper. One scheme is designed to control the cold outlet temperature of the SHX (Tco) and the hot outlet temperature of the intermediate heat exchanger (Tho2) by manipulating the hot-side flow rates of the heat exchangers (Fh/Fh2) responding to the flow rate and temperature disturbances. The flow rate disturbances typically require a larger manipulation of the flow rates than temperature disturbances. An alternate strategy examines the control of the cold outlet temperature of the SHX (Tco) only, since this temperature provides the driving force for energy production in the power conversion unit or the process application. The control can be achieved by three options: (1) flow rate manipulation; (2) reactor power manipulation; or (3) a combination of the two. The first option has a quicker response but requires a large flow rate change. The second option is the slowest but does not involve any change in the flow rates of streams. The final option appears preferable as it has an intermediate response time and requires only a minimal flow rate change.},
doi = {10.1016/j.net.2016.05.001},
journal = {Nuclear Engineering and Technology},
number = 6,
volume = 48,
place = {Korea, Republic of},
year = {2016},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.net.2016.05.001

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