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Study of evaporative heat transfer of the zeotropic mixture HFC-23/HFC-134a inside a smooth horizontal tube.

Etude du transfert de chaleur lors de l'évaporation du mélange zéotrope HFC-23/HFC-134a à l'intérieur d'un tube lisse horizontal.

Author(s) : BERRADA N., MARVILLET C.

Summary

A straight coaxial test section was used. The refrigerant evaporates inside the inner tube and hot water flows inside the surrounding circular ring area. A significant reduction in the evaporative exchange coefficient was seen. A model was presented and validated, taking into account this decrease in the nucleate boiling region as well as in the convective evaporation region. Pressure drops were also evaluated.

Details

  • Original title: Etude du transfert de chaleur lors de l'évaporation du mélange zéotrope HFC-23/HFC-134a à l'intérieur d'un tube lisse horizontal.
  • Record ID : 2000-0126
  • Languages: French
  • Source: Heat transfer in condensation and evaporation: application to industrial and environmental processes. Preprints of the EUROTHERM Seminar 62.
  • Publication date: 1998/11/17
  • Document available for consultation in the library of the IIR headquarters only.

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