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Transfert de chaleur en ébullition du HFO-1234yf en écoulement à l'intérieur d'un tube lisse horizontal de faible diamètre.

Boiling heat transfer of HFO-1234yf flowing in smooth small-diameter horizontal tube.

Numéro : pap. NS21

Auteurs : DANG C., SAITOH S., NAKAMURA Y., et al.

Résumé

The boiling heat transfer coefficient of the refrigerant, HFO-1234yf, flowing in a smooth small-diameter horizontal tube with an inner diameter of 2 mm was experimentally investigated. The local heat transfer coefficient was measured at heat flux ranging from 6 to 24 kW/m2, mass flux ranging from 100 to 400 kg/m2.s, evaporating temperature of 288.15 K, and inlet vapour quality ranging from 0 to 0.25. Results showed that, at low vapor quality, the effect of heat flux on the heat transfer was large, whereas at high vapour quality, the effect of mass flux was large. The heat transfer coefficient of HFO-1234yf is almost same as that of R134a. The heat transfer coefficients calculated based on the correlation of Saitoh et al. agreed well with the measured values as compared to other correlations.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Boiling heat transfer of HFO-1234yf flowing in smooth small-diameter horizontal tube.
  • Identifiant de la fiche : 30000585
  • Langues : Anglais
  • Source : Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Date d'édition : 17/02/2010

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