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Flow boiling of refrigerant-oil mixtures: measurements of heat transfer coefficients.
Author(s) : MERMOND Y., MARVILLET C., FEIDT M.
Summary
In-tube flow boiling results of refrigerant R134a-oil mixtures are presented. Numerical methods were used to display the heat transfer coefficients as a function of the circumferential angle and the vapor quality. Results show an enhancement of the coefficients due to the presence of lubricant concentration above mass 1% and vapor quality 50%. This study demonstrates that the transition between nucleate and convective contributions to flow boiling is not only a function of the vapor quality.
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Details
- Original title: Flow boiling of refrigerant-oil mixtures: measurements of heat transfer coefficients.
- Record ID : 2000-1227
- Languages: English
- Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
- Publication date: 1999/09/19
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Indexing
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Themes:
HFCs;
Mass transfer;
Two-phase flow;
Lubricants - Keywords: Two-phase flow; R134a; Heat transfer coefficient; Measurement; Lubricant; Tube; Heat transfer; Mixture; Refrigerant; Boiling
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