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Title: Supercritical Brayton Power Conversion with a Direct Cooled Reactor for Space Power

Abstract

To achieve future goals in space exploration a long life, compact power system will be necessary, and nuclear power sources are a promising option. The goal of this project is to achieve mass optimization with a supercritical Brayton Cycle coupled to a direct-cooled nuclear reactor. It is critical to minimize the total mass of this system because of space launch costs. The total mass involves both the components’ masses as well as the fuel mass which is related to system efficiency. This paper discusses a project in which a detailed reactor model is integrated with a carefully constructed cycle model in order to simultaneously optimize the design of these two aspects of the system. Component models are discussed as well as an initial optimization study. A robust, simple recuperated Brayton cycle model is complete and is in the process of integration with a developing reactor model. Preliminary observations of the cycle model have led to the conclusion that there will be an optimum point between a large recuperator and small reactor with high system efficiency, and a large reactor and small recuperator with low recuperator mass for any given radiater size. Once the reactor model is integrated into the cyclemore » optimization, the tradeoffs between the sizes of the radiator, recuperator, and reactor will be further investigated and an optimum system mass will be apparent.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. University of Wisconsin - Madison
Publication Date:
Research Org.:
University of Wisconsin - Madison
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
Contributing Org.:
Creare, Sandia National Lab
OSTI Identifier:
1440024
Report Number(s):
DOE-UW-08679-2
DOE Contract Number:  
NE0008679
Resource Type:
Conference
Resource Relation:
Conference: 6th International sCO2 Power Cycles Symposium, Pittsburgh, PA, March 27-29, 2018
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 42 ENGINEERING; supercritical CO2, Space Power, Brayton Cycle

Citation Formats

Sondelski, Becky, Swenson, Alex, Nellis, Greg, Wilson, Paul, and Anderson, Mark. Supercritical Brayton Power Conversion with a Direct Cooled Reactor for Space Power. United States: N. p., 2018. Web.
Sondelski, Becky, Swenson, Alex, Nellis, Greg, Wilson, Paul, & Anderson, Mark. Supercritical Brayton Power Conversion with a Direct Cooled Reactor for Space Power. United States.
Sondelski, Becky, Swenson, Alex, Nellis, Greg, Wilson, Paul, and Anderson, Mark. Thu . "Supercritical Brayton Power Conversion with a Direct Cooled Reactor for Space Power". United States. doi:. https://www.osti.gov/servlets/purl/1440024.
@article{osti_1440024,
title = {Supercritical Brayton Power Conversion with a Direct Cooled Reactor for Space Power},
author = {Sondelski, Becky and Swenson, Alex and Nellis, Greg and Wilson, Paul and Anderson, Mark},
abstractNote = {To achieve future goals in space exploration a long life, compact power system will be necessary, and nuclear power sources are a promising option. The goal of this project is to achieve mass optimization with a supercritical Brayton Cycle coupled to a direct-cooled nuclear reactor. It is critical to minimize the total mass of this system because of space launch costs. The total mass involves both the components’ masses as well as the fuel mass which is related to system efficiency. This paper discusses a project in which a detailed reactor model is integrated with a carefully constructed cycle model in order to simultaneously optimize the design of these two aspects of the system. Component models are discussed as well as an initial optimization study. A robust, simple recuperated Brayton cycle model is complete and is in the process of integration with a developing reactor model. Preliminary observations of the cycle model have led to the conclusion that there will be an optimum point between a large recuperator and small reactor with high system efficiency, and a large reactor and small recuperator with low recuperator mass for any given radiater size. Once the reactor model is integrated into the cycle optimization, the tradeoffs between the sizes of the radiator, recuperator, and reactor will be further investigated and an optimum system mass will be apparent.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 29 00:00:00 EDT 2018},
month = {Thu Mar 29 00:00:00 EDT 2018}
}

Conference:
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