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Numerical investigation on flow boiling characteristics of liquified natural gas in FLNG plate-fin heat exchanger under sloshing conditions.

Recherche numérique des caractéristiques d’ébullition en écoulement de gaz naturel liquéfié dans l’échangeur de chaleur à plaques à ailettes d’une installation de GNL flottante dans des conditions de ballottement.

Numéro : pap. n. 987

Auteurs : LI J., HU H., HAN W., et al.

Résumé

Plate-fin heat exchangers (PFHX) are widely used in floating liquefied natural gas (FLNG) facilities, and the PFHX performance may be significantly affected by the FLNG sloshing motions. In the present study, a model for liquefied natural gas flow boiling in PFHX under sloshing conditions was established. In the model, the numerical model to simulate the flow and heat transfer was developed, and the sloshing acceleration model was added to reflect the sloshing effect. The proposed model was verified experimentally, and it agrees well with the experimental data. Based on the proposed model, the sloshing motion effects were analyzed. The heaving motion among sloshing conditions has most obvious influence on heat transfer, showing a sloshing impact factor of 38.5%~240.9%; the rotation type of sloshing motion has negligible effect on the heat transfer.

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Pages : 8

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Détails

  • Titre original : Numerical investigation on flow boiling characteristics of liquified natural gas in FLNG plate-fin heat exchanger under sloshing conditions.
  • Identifiant de la fiche : 30025946
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0987

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