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Étude expérimentale des caractéristiques du transfert de chaleur par [ébullition en écoulement] descendant de propane côté calandre d’un échangeur de chaleur à spirale au GNL.

Experimental investigation on downward flow boiling heat transfer characteristics of propane in shell side of LNG spiral wound heat exchanger.

Auteurs : DING C., HU H., DING G., et al.

Type d'article : Article, Article de la RIF

Résumé

For designing LNG spiral wound heat exchangers (SWHE), the boiling heat transfer mechanism of two-phase hydrocarbon refrigerant flowing downward in shell side should be known. In this study, an explosion-proof experimental rig was established for measuring heat transfer coefficients (HTC) and observing flow patterns. The test section contains three-layer tube bundles to emulate the actual structure and flow conditions of an SWHE. Propane as one main component of shell-side refrigerant is used as the tested fluid. The experimental conditions cover heat fluxes of 4~10?kW·m-2, mass fluxes of 40~80?kg (m2·s)-1 and vapor qualities of 0.2~1.0. The results indicate that HTC initially increases and then decreases with the increment of vapor quality, representing a maximum at a vapor quality of 0.8~0.9; the effect of heat flux on HTC increases with the increment of heat flux. A correlation of HTC was developed covering 98% of the experimental data within a deviation of ±20%.

Documents disponibles

Format PDF

Pages : 13-25

Disponible

  • Prix public

    20 €

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Détails

  • Titre original : Experimental investigation on downward flow boiling heat transfer characteristics of propane in shell side of LNG spiral wound heat exchanger.
  • Identifiant de la fiche : 30022518
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 84
  • Date d'édition : 12/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.08.006

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