Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Evaluation of the Heat Conduction Model of Concrete Ground on Which LN2 Non-Spreading Pool Forms

비확산 액체질소 풀이 형성된 콘크리트 판의 열전도 모델 평가

  • KIM, MYUNGBAE (Department of Plant Technology, Korea Institute of Machinery & Materials) ;
  • NGUYEN, LE-DUY (Department of Plant Technology, Korea Institute of Machinery & Materials) ;
  • CHUNG, KYUNGYUL (Department of Plant Technology, Korea Institute of Machinery & Materials) ;
  • HAN, YONGSHIK (Department of Plant Technology, Korea Institute of Machinery & Materials) ;
  • CHO, SUNGHOON (Department of Plant Technology, Korea Institute of Machinery & Materials)
  • 김명배 (한국기계연구원 플랜트융합연구실) ;
  • ;
  • 정경열 (한국기계연구원 플랜트융합연구실) ;
  • 한용식 (한국기계연구원 플랜트융합연구실) ;
  • 조성훈 (한국기계연구원 플랜트융합연구실)
  • Received : 2021.08.23
  • Accepted : 2021.10.19
  • Published : 2021.10.30
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Abstract

In this study, evaporation of LN2 non-spreading pool on concrete plate was dealt with experimentally. The thermophysical properties of concrete, which is a composite material, were obtained by minimizing the difference between the numerical analysis results obtained from the assumed properties and the results from experiments. The thermal energy required for evaporation of the liquid pool is supplied from the concrete plate and the wall of the container. As a result of the measurement, the thermal energy flowing in from the wall was negligible compared to the one supplied from the concrete plate. It was found that the measured evaporation rate of the liquid pool by the heat energy supplied through the concrete plate agrees well with the PTC model except for the initial section of the experiment. The validity of the semi-infinite assumption and the one-dimensional assumption, which are the main conditions of the PTC model, was also verified through experiments. The evaporation rate model in the non-spreading pool discussed in this study can provide a basic frame for the one in the spreading pool, which is a meaningful result considering that the spreading pool is very realistic compared to the non-spreading pool.

Keywords

Acknowledgement

본 연구는 해양수산과학기술진흥원과 국토교통부의 상용급 액체수소 플랜트 핵심기술 연구개발사업의 지원으로 수행되었습니다.

References

  1. F. Briscoe and P. Shaw, "Spread and evaporation of liquid", Prog. Energy Comb. Sci, Vol. 6, No. 2, 1980, pp. 127-140, doi: https://doi.org/10.1016/0360-1285(80)90002-7.
  2. J. Brandeis and E. Kansas, "Numerical simulation of liquefied fuel spills: I. Instantaneous release into a confined area", Int. J. Numer. Methods Fluids, Vol. 3, 1983, pp. 333-345, doi: https://doi.org/10.1002/FLD.1650030404.
  3. W. Stein and D. L. Ermak, "One-dimensional numerical fluid dynamics model of the spreading of liquefied gaseous fuel (LGF) on water", United States, Vol. 6, 1981, Retrieved from https://www.osti.gov/biblio/5394323-one-dimensional-numerical-fluid-dynamics-model-spreading-liquefied-gaseous-fuel-lgf-water.
  4. A. G. Venetsanos and J. G. Bartzis, "CFD modeliing of large-scale LH2 spills in open environment", International Journal of Hydrogen Energy, Vol. 32, No. 13, 2007, pp. 2171-177, doi: https://doi.org/10.1016/j.ijhydene.2007.04.020.
  5. K. Verfondern and B. Dienhart, "Experimental and theoretical investigation of liquid hydrogen pool spreading and vaprization", Int. J. Hydrogen Energy, Vol. 22, No. 7, 1997, pp. 649-660, doi: https://doi.org/10.1016/S0360-3199(96)00204-2.
  6. J. Brandeis and D. Ermak, "Numerical simulation of liquefied fuel spills: II. Instantaneous and continuous LNG spills on an unconfined water surface", Int. J. Numer. Methods Fluids, Vol. 3, No. 4, 1983, pp. 347-361, doi: https://doi.org/10.1002/fld.1650030405.
  7. L-D. Nguyen, M. B. Kim, B. G. Choi, and K. Y. Chung, "Validation of numerical models or cryogenic-liquid pool spreading and vaporization on solid ground", Int. J. Heat and Mass Transfer, Vol. 128, 2019, pp. 817-824, doi: https://doi.org/10.1016/j.ijheatmasstransfer.2018.09.055.
  8. K. Levenberg, "A method for the solution of certain non-linear problems in least squares". Quarterly of Applied Mathematics, Vol. 2, No. 2, 1944, pp. 164-168, Retrieved from https://www.jstor.org/stable/43633451. https://doi.org/10.1090/qam/10666
  9. D. Marquardt, "An algorithm for least-squares estimation of nonlinear parameters", SIAM Journal on Applied Mathematics, Vol. 11, No. 2, 1963, pp. 431-441, Retrieved from https://www.jstor.org/stable/2098941. https://doi.org/10.1137/0111030
  10. J. P. Holman, "Heat transfer", 4th ed., AIChE, Vol. 23, No. 3, 1977, pp. 406, doi: https://doi.org/10.1002/aic.690230338.
  11. B. P. Breen and J. W. Westwater, "Effect of diameter of horizontal tubes on film boiling heat transfer", Chemical Engineering Progress, Vol. 58, No. 7, 1962, pp. 67-72, Retrieved from https://jglobal.jst.go.jp/en/detail?JGLOBAL_ID=201602003578059063.
  12. S. S. Kutateladze, "Heat transfer in condensation and boiling", 1992, doi: https://doi.org/10.1007/978-3-642-52457-8.