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Analyse dynamique du transfert de chaleur d’un vaporisateur à l’air ambiant de gaz naturel liquéfié dans des conditions de givre.

Dynamic heat transfer analysis of liquefied natural gas ambient air vaporizer under frost conditions.

Auteurs : LIU S., JIAO W., REN L., et al.

Type d'article : Article

Résumé

Liquefied natural gas (LNG) ambient air vaporizer (AAV) is a cryogenic heat exchanger, which utilizes ambient air to evaporate LNG in gas terminal stations. The moist air around the AAV fin tube may freeze during the long-time operation, leading to a worse heat transfer performance. Study on the dynamic heat transfer performance of AAV is required for its optimal design and operation. This paper presents a coupled dynamic heat transfer model, which incorporates the cryogenic frost formation and flow boiling heat transfer of LNG. The model was demonstrated in the heat transfer analysis of a typical star-fin type AAV. The model results were validated by the test data of a commercial HAI848F type AAV. The dynamic heat transfer performance of AAV under frost conditions was also studied.

Détails

  • Titre original : Dynamic heat transfer analysis of liquefied natural gas ambient air vaporizer under frost conditions.
  • Identifiant de la fiche : 30020680
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 110
  • Date d'édition : 05/01/2017
  • DOI : http://dx.doi.org/10.1016/j.applthermaleng.2016.09.016

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