Flow condensation of pure and oil contaminated refrigerant HFC134a in a horizontal tube.

Summary

The heat transfer coefficient in case of oil contaminated refrigerant is shown to depend strongly on the definition of the saturation temperature. Using the pure refrigerant saturation temperature (hence disregarding the influence of oil on the vapour pressure), the results in average heat transfer coefficient show only minor effect of the oil contents. If the saturation temperature of the refrigerant-oil mixture is used, there is thus a considerable degradation of the heat transfer coefficient (as expected) with increasing oil concentrations.

Details

Original title: Flow condensation of pure and oil contaminated refrigerant HFC134a in a horizontal tube.
Record ID : 1995-0832
Languages: English
Source: Proceedings of the 1994 International Refrigeration Conference at Purdue.
Publication date: 1994/07/19
Document available for consultation in the library of the IIR headquarters only.

Links

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Indexing

Themes: HFCs;
Mass transfer;
Lubricants
Keywords: R134a; Horizontal tube; Heat transfer coefficient; Measurement; Oil; Refrigerant; Condensation; Pressure drop