Numerical Simulation of Self Pressurization in a Small Cryogenic Tank

  • Y. Rotenberg
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 31)

Abstract

Recent interests in hydrogen energy systems have prompted research activities in the safe and effective storage and handling of liquid hydrogen. Small cryogenic tanks will be required for use in future on board vehicular and remote site hydrogen based systems. In order to facilitate design and safety analyses, the Institute for Hydrogen Systems has developed a numerical model which simulates the operations of a small size cryogenic tank. The simulation is based on a simplified physical model in which the mechanism of heat transfer is represented as a one dimensional process and the fluid mixture is approximated as a saturated homogeneous mixture. It is shown that the numerical results, when compared with experimental data, give rise to a prediction of pressure rise in a closed vessel which is 1.3 times lower then the actual pressure rise in a nearly empty tank. The calculated pressure rise is 1.6 times lower for a nearly full tank. This suggests that the difference between the predicted and experimental results is due mainly to the development of temperature gradients in the liquid.

Keywords

Convection Carbide Total Heat Transportation Stratification 

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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Y. Rotenberg
    • 1
  1. 1.Institute for Hydrogen SystemsMississaugaCanada

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