Nuclear Engineering and Technology

  • 제49권3호
  • /
  • Pages.459-465
  • /
  • 2017
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  • 1738-5733(pISSN)
  • /
  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Effective Thermal Conductivity and Diffusivity of Containment Wall for Nuclear Power Plant OPR1000

  • Noh, Hyung Gyun (Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH)) ;
  • Lee, Jong Hwi (Mechanical Engineering Division, Kunsan National University (KNU)) ;
  • Kang, Hie Chan (Mechanical Engineering Division, Kunsan National University (KNU)) ;
  • Park, Hyun Sun (Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH))
  • 투고 : 2016.05.30
  • 심사 : 2016.10.15
  • 발행 : 2017.06.25
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초록

The goal of this study is to evaluate the effective thermal conductivity and diffusivity of containment walls as heat sinks or passive cooling systems during nuclear power plant (NPP) accidents. Containment walls consist of steel reinforced concrete, steel liners, and tendons, and provide the main thermal resistance of the heat sinks, which varies with the volume fraction and geometric alignment of the rebar and tendons, as well as the temperature and chemical composition. The target geometry for the containment walls of this work is the standard Korean NPP OPR1000. Sample tests and numerical simulations are conducted to verify the correlations for models with different densities of concrete, volume fractions, and alignments of steel. Estimation of the effective thermal conductivity and diffusivity of the containment wall models is proposed. The Maxwell model and modified Rayleigh volume fraction model employed in the present work predict the experiment and finite volume method (FVM) results well. The effective thermal conductivity and diffusivity of the containment walls are summarized as functions of density, temperature, and the volume fraction of steel for the analysis of the NPP accidents.

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참고문헌

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피인용 문헌

  1. Estimation Model for Effective Thermal Conductivity of Reinforced Concrete Containing Multiple Round Rebars vol.12, pp.1, 2018, https://doi.org/10.1186/s40069-018-0291-2
  2. Measurement Method of Thermal Diffusivity of the Building Wall for Summer and Winter Seasons in Poland vol.14, pp.13, 2017, https://doi.org/10.3390/en14133836
  3. Effect of structure on the mechanical and physical properties of chocolate considering time scale phenomena occurring during oral processing vol.31, pp.None, 2017, https://doi.org/10.1016/j.foostr.2021.100244