HTGR Knowledge Base

Conference Article: Technical and economic prospects for the gas-turbine MHTGR

Mears, L.D.; Penfield, S.R. Jr. (Gas-Cooled Reactor Associates, San Diego, CA (United States))

Abstract

The high temperature capability of the High Temperature Gas-Cooled Reactor (HTGR) fuel system, in conjunction with the Modular HTGR (MHTGR) design philosophy, provide the basis for enhanced safety characteristics and for unique applications of nuclear energy in both the electric generation and process energy markets. A particular promising approach is the coupling of the MHTGR heat source with a closed gas-turbine power conversion cycle (Brayton cycle). Initial results from related international efforts indicate the potential to generated electricity with mid-40% efficiencies, with reduced capital costs (relative to steam cycle power plants), and at power costs competitive with modern natural gas fired combined cycle gas-turbine power plants. In addition, the thermodynamic characteristics of the Brayton cycle suggest that the gas-turbine MHTGR (MHTGR-GT) would be well suited for coupling with certain process energy applications, such as desalination and cogeneration. In this paper, the technical and economic potential of the MHTGR-GT are explored. In addition, key technical and licensing issues are identified, and the near term program to address them is summarized.

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key words: Gas Cooled Reactor, Nuclear Technology
Reference:
Technical committee meeting on high temperature applications of nuclear energy. Oarai (Japan). 19-20 Oct 1992
International Atomic Energy Agency, Vienna (Austria)
IAEA-TECDOC--761, pp:33-41