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Estimation of Heat Flux Through Free Liquid Hydrogen Surface in Cryogenic Tanks with Supercharged Vapor Space

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Chemical and Petroleum Engineering Aims and scope

Synthesis of a mathematical model of cooling of supercharging gas in the vapor space of cryogenic tanks containing liquefied gas is studied. Based on the model of a unidimensional dynamic thermal boundary layer, it is shown that the heat flux through the free liquid hydrogen surface in the cryogenic tank having a vapor space supercharged with gaseous hydrogen is much less than the heat flux through a wetted surface. The operational process of supercharging vapor space with gaseous hydrogen is studied by the example of a commercial liquid hydrogen tank. An example of calculation that shows the procedure of calculation of specific heat fluxes is given. The calculation results show that in the working range of fractions of the vapor space the heat flux through the liquid surface is much less than the heat flux through a wetted surface and that the heat of the supercharging gas exerts practically no influence on the change in temperature of the cryogenic liquid during its storage in the tank.

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Authors and Affiliations

  1. Military Training and Research Center of Airforce – Zhukovskii and Gagarin Airforce Academy, Voronezh, Russia

    V. I. Ryazhskikh, A. A. Khvostov, A. V. Ryazhskikh, A. V. Ivanov & A. V. Kozlov

Authors
  1. V. I. Ryazhskikh
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  2. A. A. Khvostov
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  3. A. V. Ryazhskikh
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  4. A. V. Ivanov
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  5. A. V. Kozlov
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Corresponding author

Correspondence to A. A. Khvostov.

Additional information

Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 2, pp. 22–23, February, 2017.

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Ryazhskikh, V.I., Khvostov, A.A., Ryazhskikh, A.V. et al. Estimation of Heat Flux Through Free Liquid Hydrogen Surface in Cryogenic Tanks with Supercharged Vapor Space. Chem Petrol Eng 53, 101–105 (2017). https://doi.org/10.1007/s10556-017-0302-1

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  • DOI: https://doi.org/10.1007/s10556-017-0302-1

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