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Expériences sur le transfert de chaleur par ébullition/condensation et sur la chute de pression du frigorigène HFO1336mzz(E) et d’un mélange dans un tube horizontal à micro-ailettes.

Experiments on boiling/condensation heat transfer and pressure drop of refrigerant HFO1336mzz(E) and the mixture inside a horizontal microfin tube.

Numéro : pap. n. 871

Auteurs : INOUE N., LIU Y., WATANABE K., et al.

Résumé

This study experimentally investigated the boiling/condensation heat transfer and pressure drop characteristics of HFO1336mzz(E) and a mixture of HFO1336mzz(E) and HFO1336mzz(Z), inside a horizontal microfin tube. The test tube was copper, with an outside diameter of 9.52 mm, an equivalent inner diameter of 8.95 mm, fin heights of 0.12 mm, a helix angle of 16.5°, and 65 fins. The experiments were conducted under a mass velocity range from 50 to 300 kgm-2s-1 at boiling and condensation saturated temperatures of 40 °C and 60 °C. The relationship between heat transfer coefficient/frictional pressure drop and vapor quality in boiling and condensation processes were clarified. The boiling/condensation heat transfer coefficient of HFO1336mzz(E) was lower than that of R245fa, however the pressure drop of HFO1336mzz(E) was lower than that of R245fa.

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Pages : 8

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Détails

  • Titre original : Experiments on boiling/condensation heat transfer and pressure drop of refrigerant HFO1336mzz(E) and the mixture inside a horizontal microfin tube.
  • Identifiant de la fiche : 30026047
  • 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.2019.0871

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