ShareStudy 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.
Links
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Indexing
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Themes:
HFCs;
Heat transfer;
Mass transfer;
Blends - Keywords: R23; R134a; Horizontal tube; Heat transfer coefficient; Measurement; Mass transfer; Heat transfer; Bare pipe; Modelling; Mixture; Evaporation
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Etude du transfert de chaleur lors de l'évapora...
- Author(s) : BERRADA N., ALJ A.
- Date : 1998/11/17
- Languages : French
- Source: Heat transfer in condensation and evaporation: application to industrial and environmental processes. Preprints of the EUROTHERM Seminar 62.
View record
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Evaporation heat transfer characteristics of ca...
- Author(s) : YUN R., HWANG J. H., KIM Y. C., et al.
- Date : 2001/10/03
- Languages : English
- Source: Thermophysical Properties and Transfer Processes of New Refrigerants.
- Formats : PDF
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Etude expérimentale de la condensation du mélan...
- Author(s) : BERRADA N., MARVILLET C., BONTEMPS A., DAOUDI S.
- Date : 1995/10/04
- Languages : French
- Source: Heat transfer in condensation. Proceedings of the Eurotherm Seminar 47.
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A study of in-tube evaporation heat transfer of...
- Author(s) : SAWANT N. N., KIM M. S., PAYNE W. V., et al.
- Date : 2003/08/17
- Languages : English
- Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
- Formats : PDF
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BOILING HEAT TRANSFER ON OUTSIDE OF HORIZONTAL ...
- Author(s) : KOYAMA Y., HASHIZUME K.
- Date : 1983/08/07
- Languages : English
- Source: [Refrigeration serving humanity]. Proceedings of the XVIth international Congress of Refrigeration.
- Formats : PDF
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