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Surface Evaporation of Cryogenic Liquids, Including LNG and LPG

  • Ralph G. Scurlock
Chapter
  • 694 Downloads
Part of the SpringerBriefs in Energy book series (BRIEFSENERGY)

Abstract

Surface evaporation of the boil-off gas is the key to understanding how stratification and rollover can take place.

The chapter concentrates on the evaporation mechanism which is controlled by superheated convection currents at the tank wall carrying all the heat inflows up to the liquid surface.

Research studies have shown how the surface evaporation mass flow depends on a thin surface layer with a sensitive thermal impedance which can be strongly influenced by mechanical and convectional disturbances. Rollover and other evaporation instabilities are a consequence.

For LNG mixtures, the surface evaporation impedance of methane is much lower than for ethane, so the vapour has a higher methane content than predicted by standard (T–x) data.

Keywords

Vapour Bubble Bulk Liquid Surface Evaporation Constant Wall Temperature Superheated Liquid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Author(s) 2016

Authors and Affiliations

  • Ralph G. Scurlock
    • 1
  1. 1.University of SouthamptonSouthamptonUK

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