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Title: Gas-cooled reactor power systems for space

Efficiency and mass characteristics for four gas-cooled reactor power system configurations in the 2- to 20-MWe power range are modeled. The configurations use direct and indirect Brayton cycles with and without regeneration in the power conversion loop. The prismatic ceramic core of the reactor consists of several thousand pencil-shaped tubes made from a homogeneous mixture of moderator and fuel. The heat rejection system is found to be the major contributor to system mass, particularly at high power levels. A direct, regenerated Brayton cycle with helium working fluid permits high efficiency and low specific mass for a 10-MWe system.
Authors:
Publication Date:
OSTI Identifier:
5626565
Report Number(s):
UCRL-95047-Rev.2; CONF-870102-1-Rev.2
ON: DE88005220
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 4. symposium on space nuclear power systems, Albuquerque, NM, USA, 12 Jan 1987; Other Information: Portions of this document are illegible in microfiche products
Research Org:
Lawrence Livermore National Lab., CA (USA)
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; GAS COOLED REACTORS; SPACECRAFT POWER SUPPLIES; BRAYTON CYCLE; CONFIGURATION; EFFICIENCY; PERFORMANCE; REACTOR CORES; SYSTEMS ANALYSIS; ELECTRONIC EQUIPMENT; EQUIPMENT; POWER SUPPLIES; REACTOR COMPONENTS; REACTORS; THERMODYNAMIC CYCLES; 210300* - Power Reactors, Nonbreeding, Graphite Moderated