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Title: SAFE GAS TURBINE CYCLE PRIMARY HEAT EXCHANGERS

Abstract

No abstract prepared.

Authors:
;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
789007
Report Number(s):
LA-UR-01-6408
TRN: US0302098
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 Nov 2001
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; GAS TURBINES; HEAT EXCHANGERS; LANL

Citation Formats

R. S. REID, and R. J. KAPERNICK. SAFE GAS TURBINE CYCLE PRIMARY HEAT EXCHANGERS. United States: N. p., 2001. Web.
R. S. REID, & R. J. KAPERNICK. SAFE GAS TURBINE CYCLE PRIMARY HEAT EXCHANGERS. United States.
R. S. REID, and R. J. KAPERNICK. Thu . "SAFE GAS TURBINE CYCLE PRIMARY HEAT EXCHANGERS". United States. doi:. https://www.osti.gov/servlets/purl/789007.
@article{osti_789007,
title = {SAFE GAS TURBINE CYCLE PRIMARY HEAT EXCHANGERS},
author = {R. S. REID and R. J. KAPERNICK},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Nov 01 00:00:00 EST 2001},
month = {Thu Nov 01 00:00:00 EST 2001}
}

Conference:
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  • Gas cooling of power-dense nuclear reactor cores can produce large thermal and stress gradients through sensible temperature changes in the coolant. In-core heat pipes remove heat isothermally and reduce the severity of these gradients. The modular SAFE reactor concept consists of numerous heat pipes that permit core re-assembly during test and preflight integration. The redundancy inherent in the modular heat pipe-based design enhances reactor reliability. The SAFE reactor is designed to operate for extended periods near full power even if several fuel pins or modules fail. Los Alamos National Laboratory and Marshall Space Flight Center are jointly developing two modularmore » heat pipe heat exchangers, collectively named FIGMENT (Fission Inert Gas Metal Exchanger for Non-nuclear Testing). The FIGMENT heat exchangers are designed to transfer power from the SAFE nuclear reactor cores to gas turbine energy converters. A stainless steel prototype heat exchanger will be built in preparation for the construction of a larger refractory metal version. Several promising FIGMENT stainless steel heat exchanger concepts are reviewed here. (authors)« less
  • Continuing studies of the Gas Turbine High-Temperature Gas-Cooled Reactor (GT-HTGR) power plant have been directed toward identification of a plant configuration with improved economic incentives over competing electric power plants. This paper outlines the studies which led to the selection of the primary system for a plant with optimized parameters from the standpoint of minimum power generating cost. As in previously reported designs, an integrated type of plant embodying multiple helium gas turbine loops was selected. The layout of the power conversion loop (PCL) components in the prestressed concrete reactor vessel (PCRV) and the development of the primary system heliummore » gas flow paths are discussed. Some of the preliminary design considerations for the turbomachinery, heat exchangers, thermal barrier, and control valves together with maintenance considerations are discussed. The reference plant preliminary design presented is based on a 3000-MW(t) core thermal rating with a reactor outlet (turbine inlet) temperature of 850/sup 0/C: the overall plant efficiency of the dry-cooled direct cycle nuclear gas turbine is 40 percent.« less
  • The concept of the dual pressure steam/pure organic hybrid immiscible liquid cycle applied to recover exhaust heat from gas turbines is extended to include organic mixtures. Thermodynamics of the resulting ternary working fluid cycle is presented. For the cycle arrangement analysed it is calculated that the ternary steam/nonane/decane cycle with the organic very nonane rich produces about 2% more work than the corresponding all steam cycle for a typical gas turbine exhaust temperature. It is estimated that this advantage can be raised to about 4% by adding additional heaters at the stack end of the heat recovery generator. The analysismore » shows that it is unnecessary to use a pure alkane organic. A mixture containing up to about 5% of alkanes with higher boiling points than nonane is adequate.« less
  • The advantages offered by the open cycle gas/steam turbine set for electric power generation are pointed out. Such turbines offer also the possibilities of recovering heat after some modifications. Suggestions are given for improving the amount and effectiveness of energy recovery from the exhaust gases of turbines. 5 refs.
  • The high-grade sensible heat rejection characteristic of the high-temperature gas-cooled reactor-gas turbine (HTGR-GT) plant is ideally suited to cogeneration. Cogeneration in this nuclear closed-cycle plant could include (1) bottoming Rankine cycle, (2) hot water or process steam production, (3) desalination, and (4) urban and industrial district heating. This paper discusses the HTGR-GT plant thermodynamic cycles, design features, and potential applications for the cogeneration operation modes. This paper concludes that the HTGR-GT plant, which can potentially approach a 50% overall efficiency in a combined cycle mode, can significantly aid national energy goals, particularly resource conservation.