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Prediction of forced convective condensation on non-azeotropic refrigerant mixtures inside enhanced surface tubing.

Author(s) : SAMI S. M., SCHNOTALE J.

Type of article: Article

Summary

An experimental study on the heat transfer characteristics of two-phase flow condensation of pure refrigerants as R12 and R22 as well as non-azeotropic refrigerant mixtures R22-R114 and R22-R152a on horizontal enhanced surface tubing is presented. The enhanced surface tubing data showed a significant enhancement of the heat transfer compared to an equivalent smooth tube depending on the mixture components and their concentrations. Correlations were proposed to predict the heat transfer characteristics such as average heat transfer coefficients as well as pressure drops of non-azeotropic refrigerant mixture flow condensation inside enhanced surface tubing. In addition, it was found that the refrigerant mixture's pressure drop is a weak function of the mixture composition.

Details

Original title: Prediction of forced convective condensation on non-azeotropic refrigerant mixtures inside enhanced surface tubing.
Record ID : 1993-3272
Languages: English
Source: Appl. sci. Res. - vol. 50
Publication date: 1993
Document available for consultation in the library of the IIR headquarters only.

Links

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Indexing

Themes: CFCs;
HCFCs;
HFCs;
Mass transfer;
Blends
Keywords: R114; Horizontal tube; Heat transfer coefficient; Extended surface; Heat transfer; R22; R152a; R12; Zeotropic mixture; Forced convection; Refrigerant; Condensation; Pressure drop