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Title: EVALUATION OF ORGANIC RANKINE CYCLES IN AN AIR-BRAYTON COMBINED CYCLE FOR MICROREACTOR APPLICATIONS

Abstract

Microreactors can be used to provide electrical power up to 10 MWe for emergency situations, remote areas, or military applications. Combined cycles comprised of an air Brayton topping cycle and an Organic Rankine bottoming cycle were evaluated in HYSYS using different working fluids in the bottoming cycle and in different ambient environments. The results suggest that a bottoming ORC can increase the thermal efficiency of the air Brayton cycle up to 40.22%. Exergy analysis was also performed on the combined cycle along with a simple validation of HYSYS on the bottoming cycle. The exergy analysis shows that of available work, most is lost at the reactor or turned into work at the topping cycle. A rudimentary capital cost estimate showed that adding a bottoming cycle is not prohibitively expensive.

Authors:
 [1]; ORCiD logo [1];  [2]
  1. Idaho National Laboratory
  2. University of Idaho
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1484504
Report Number(s):
INL/CON-18-45753-Rev000
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: International Topical Meeting on Advances in Thermal Hydraulics, Orlando, Florida, 11/11/2018 - 11/15/2018
Country of Publication:
United States
Language:
English
Subject:
37 - INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; microreactors; combined cycle; nuclear reactor; organic rankine cycle; mobile power

Citation Formats

Litrel, Joseph, Guillen, Donna, and McKellar, Michael. EVALUATION OF ORGANIC RANKINE CYCLES IN AN AIR-BRAYTON COMBINED CYCLE FOR MICROREACTOR APPLICATIONS. United States: N. p., 2018. Web.
Litrel, Joseph, Guillen, Donna, & McKellar, Michael. EVALUATION OF ORGANIC RANKINE CYCLES IN AN AIR-BRAYTON COMBINED CYCLE FOR MICROREACTOR APPLICATIONS. United States.
Litrel, Joseph, Guillen, Donna, and McKellar, Michael. Thu . "EVALUATION OF ORGANIC RANKINE CYCLES IN AN AIR-BRAYTON COMBINED CYCLE FOR MICROREACTOR APPLICATIONS". United States. https://www.osti.gov/servlets/purl/1484504.
@article{osti_1484504,
title = {EVALUATION OF ORGANIC RANKINE CYCLES IN AN AIR-BRAYTON COMBINED CYCLE FOR MICROREACTOR APPLICATIONS},
author = {Litrel, Joseph and Guillen, Donna and McKellar, Michael},
abstractNote = {Microreactors can be used to provide electrical power up to 10 MWe for emergency situations, remote areas, or military applications. Combined cycles comprised of an air Brayton topping cycle and an Organic Rankine bottoming cycle were evaluated in HYSYS using different working fluids in the bottoming cycle and in different ambient environments. The results suggest that a bottoming ORC can increase the thermal efficiency of the air Brayton cycle up to 40.22%. Exergy analysis was also performed on the combined cycle along with a simple validation of HYSYS on the bottoming cycle. The exergy analysis shows that of available work, most is lost at the reactor or turned into work at the topping cycle. A rudimentary capital cost estimate showed that adding a bottoming cycle is not prohibitively expensive.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

Conference:
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