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LNG Vaporizer Utilizing Vacuum Steam Condensing

  • Y. Miyata
  • M. Hanamure
  • H. Kujirai
  • Y. Sato
  • H. Shohtani
  • Y. Ikeda
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 37)

Abstract

This report concerns the field test results of a new type of peak-shaving LNG vaporizer (VSV) whose heat source is vacuum steam. The VSV utilizes the condensation latent heat of vacuum steam to vaporize and superheat LNG within heat transfer tubes. Prior to the field test, water and liquified nitrogen (LN2) were used as the medium for the heated fluid in order to confirm the basic heat transfer characteristices of vacuum steam and the influence of non-condensable gasses. In the field tests, the heat transfer performance, controlability and a transient response were confirmed in a scaled-down model device using external steam as the heat source.

As a result, it was confirmed that: (1) a high heat transfer coefficient is obtained on the outer surfaces of the heat transfer tubes where the vacuum steam is condensing. (2) quick load change is possible and the outlet temperature drop rate is gradual when the heat source is cut off. (3) non-condensable gasses on the outer tube surfaces which obstructs heat transfer could be easily removed. These results indicate that this vaporizer responds flexibly to operating conditions and is suitable for a wide range of applications.

Keywords

Heat Transfer Heat Transfer Coefficient Heat Exchanger Heat Source Heat Transfer Performance 
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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Reference

  1. 1.
    T. Fujii et al, “Heat transfer and flow resistance of low pressure steam flowing through tube banks,” Int. J. Heat Mass Transfer, Vol. 15, p. 247(1972).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • Y. Miyata
    • 1
  • M. Hanamure
    • 1
  • H. Kujirai
    • 1
  • Y. Sato
    • 2
  • H. Shohtani
    • 2
  • Y. Ikeda
    • 2
  1. 1.Production Engineering Development CenterTokyo Gas Co., Ltd.YokohamaJapan
  2. 2.Heat Exchangers Engineering & Development Dept.Sumitomo Precision Products Co., Ltd.HyogoJapan

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