Nuclear Engineering and Technology

  • 제54권4호
  • /
  • Pages.1482-1494
  • /
  • 2022
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  • 1738-5733(pISSN)
  • /
  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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An evaluation of power conversion systems for land-based nuclear microreactors: Can aeroderivative engines facilitate near-term deployment?

  • Guillen, D.P. (Materials Science and Engineering Department, Idaho National Laboratory) ;
  • McDaniel, P.J. (Department of Chemical and Nuclear Engineering, University of New Mexico)
  • 투고 : 2021.06.10
  • 심사 : 2021.10.10
  • 발행 : 2022.04.25
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초록

Power conversion cycles (Subcritical Steam, Supercritical Steam, Open Air Brayton, Recuperated Air Brayton, Combined Cycle, Closed Brayton Supercritical CO2 (sCO2), and Stirling) are evaluated for land-based nuclear microreactors based on technical maturity, system efficiency, size, cost and maintainability, safety implications, and siting considerations. Based upon these criteria, Air Brayton systems were selected for further evaluation. A brief history of the development and applications of Brayton power systems is given, followed by a description of how these thermal-to-electrical energy conversion systems might be integrated with a nuclear microreactor. Modeling is performed for optimized cycles operating at 3 MW(e) with turbine inlet temperatures of 500 ℃, 650 ℃ and 850 ℃, corresponding to: a) sodium fast, b) molten salt or heat pipe, and c) helium or sodium thermal reactors, coupled with three types of Brayton power conversion units (PCUs): 1) simple open-cycle gas turbine, 2) recuperated open-cycle gas turbine, and 3) recuperated and intercooled open-cycle gas turbine. Aeroderivative turboshaft engines employing the simple Brayton cycle and two industrial gas turbine engines employing recuperated air Brayton cycles are also analyzed. These engines offer mature technology that can facilitate near-term deployment with a modest improvement in efficiency.

키워드

과제정보

This work was supported by the U.S. Department of Energy Microreactor Program and authored by Battelle Energy Alliance, LLC, under Contract No. DE-AC07-05-ID14517 with the U.S. Department of Energy, Office of Nuclear Energy.

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