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Document IIF

Étude expérimentale sur le transfert de chaleur et les caractéristiques de chute de pression d'un frigorigène pur, le R1234ze(E) en condensation dans un tube horizontal à micro-ailettes.

Experimental study on heat transfer and pressure drop characteristics of pure refrigerant R1234ze(E) condensing in a horizontal micro-fin tube.

Numéro : pap. ID: 306

Auteurs : KOYAMA S., BABA D., NAKAHATA H.

Résumé

In the present study, the condensation process of a refrigerant R1234ze(E) in a horizontal micro-fin tube was experimentally investigated to clarify its pressure drop and heat transfer characteristics. Tested micro-fin tube is made of copper and its geometry is as follows: 6.00 mm in outer diameter, 5.21 mm in mean inside diameter, 0.26 mm in fin height and 20 degree in helix angle. Experiments were conducted in the mass velocity range of 200 to 400 kg*m-2*s-1 at a constant inlet pressure of around 0.8 MPa. Axial distributions of refrigerant, tube wall and water temperatures, heat flux, heat transfer coefficient, vapor quality and frictional pressure drop were measured. The effects of mass velocity on heat transfer and a frictional pressure drop characteristics are clarified. The measured pressure drop and heat transfer characteristics are compared with some previous correlations.

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Pages : 8 p.

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Détails

  • Titre original : Experimental study on heat transfer and pressure drop characteristics of pure refrigerant R1234ze(E) condensing in a horizontal micro-fin tube.
  • Identifiant de la fiche : 30002432
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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