A correlation for forced convective boiling heat transfer of non-azeotropic refrigerant mixture of HFC-22/CFC-114 in a horizontal smooth tube.
Author(s) : TAKAMATSU H., MOMOKI S., FUJII T.
Type of article: Article
Summary
Experiments are carried out on the boiling heat transfer of non-azeotropic refrigerant mixtures of R22/R114 flowing inside a 7.9 mm inner diameter horizontal smooth tube. Using a water-heated, double-tube type evaporator, the local heat transfer coefficients are measured for both counter and parallel flows. An empirical correlation equation is proposed for the data in the annular-flow regime, taking into account the mixture effect in the authors' previous correlation equation for pure refrigerants. The mean deviation between the calculated and measured heat transfer coefficients is 8.9% for the present experimental data and 7.1% for the data obtained by Jung. The equation reveals that the convection heat transfer is dominant due to the suppression of nucleate boiling for the mixtures.
Details
- Original title: A correlation for forced convective boiling heat transfer of non-azeotropic refrigerant mixture of HFC-22/CFC-114 in a horizontal smooth tube.
- Record ID : 1994-0153
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 36 - n. 14
- Publication date: 1993/09
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Indexing
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Themes:
CFCs;
HCFCs;
Mass transfer;
Blends - Keywords: R114; Correlation; Calculation; Mass transfer; Heat transfer; Bare pipe; R22; Zeotropic mixture; Forced convection; Refrigerant; Boiling
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- Date : 1990
- Languages : Japanese
- Source: Refrigeration - vol. 65 - n. 757
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- Date : 1994
- Languages : English
- Source: Int. J. Energy Res. - vol. 18
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- Author(s) : KOYAMA S., GAO L., FUJII T.
- Date : 1991/08/10
- Languages : English
- Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
- Formats : PDF
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A correlation for forced convective boiling hea...
- Author(s) : TAKAMATSU H., MOMOKI S., FUJII T.
- Date : 1993/09
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 36 - n. 13
View record
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- Author(s) : SAMI S. M., SCHNOTALE J.
- Date : 1993
- Languages : English
- Source: Appl. sci. Res. - vol. 50
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