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.
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 des transferts de chaleur lors de l'évapo...
- Author(s) : BERRADA N.
- Date : 1996/06/18
- Languages : French
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Flow boiling in horizontal tubes: new results f...
- Author(s) : WOJTAN L., THOME J. R.
- Date : 2003/08/17
- Languages : English
- Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
- Formats : PDF
View record
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In-tube evaporation heat transfer or refrigeran...
- Author(s) : DOERR T. M., PATE M. B.
- Date : 1994/07/19
- Languages : English
- Source: Proceedings of the 1994 International Refrigeration Conference at Purdue.
View record
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Heat transfer and pressure drop characteristics...
- Author(s) : TORIKOSHI K., EBISU T.
- Date : 1993
- Languages : English
- Source: ASHRAE Transactions.
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Influence of ultrasound on pool boiling heat tr...
- Author(s) : BONEKAMP S., BIER K.
- Date : 1997/12
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 8
- Formats : PDF
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