Influence of inlet mass flow rate on heat transfer of supercritical liquefied natural gas in horizontal tubes

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Abstract

The submerged combustion vaporizer (SCV) is a new kind of vaporizer for liquefied natural gas (LNG). In this paper, a numerical study has been carried out to investigate the heat transfer characteristics of supercritical LNG in horizontal tubes. The thermo-physical properties of supercritical LNG were used for this study, and the influence of inlet LNG mass flow rate on heat transfer was investigated. Numerical results showed that the LNG flow in horizontal tubes included two stages. In the first stage, the surface heat transfer coefficients increased significantly with the increase of the fluid bulk temperature and reached a maximum value when the fluid bulk temperature equaled the pseudo-critical point. After the maximum, the surface heat transfer coefficients fell rapidly with the increase of the fluid bulk temperature. With increasing the inlet LNG mass flow rate, the surface heat transfer coefficients increased due to the increased fluid velocity in horizontal tubes.

Original languageEnglish
Title of host publicationThermal, Power and Electrical Engineering III
PublisherTrans Tech Publications Ltd
Pages433-437
Number of pages5
ISBN (Print)9783038351368
DOIs
StatePublished - 2014
Event3rd International Conference on Energy and Environmental Protection, ICEEP 2014 - Xi'an, China
Duration: 26 Apr 201428 Apr 2014

Publication series

NameAdvanced Materials Research
Volume960-961
ISSN (Print)1022-6680
ISSN (Electronic)1662-8985

Conference

Conference3rd International Conference on Energy and Environmental Protection, ICEEP 2014
Country/TerritoryChina
CityXi'an
Period26/04/1428/04/14

Keywords

  • Heat transfer
  • Horizontal tube
  • Large specific heat region
  • LNG
  • Submerged combustion vaporizer

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