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http://dx.doi.org/10.3795/KSME-B.2003.27.3.381

A Study on Forced Convective Boiling Heat Transfer of Non-Azeotropic Refrigerant Mixture R134a/R123 Inside Horizontal Smooth Tube  

Lim, Tae-Woo (부경대 기계공학부)
Han, Kyu-Il (부경대 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.3, 2003 , pp. 381-388 More about this Journal
Abstract
An experimental study was carried out to measure the heat transfer coefficient in flow boiling to mixtures of HFC-l34a and HCFC-123 in a uniformly heated horizontal tube. Tests were run at a pressure of 0.6 MPa and in the ranges of heat flux 1-50 kw/$m^2$, vapor quality 0-100 % and mass velocity 150-600 kg/$m^2$s. Heat transfer coefficients of mixture were less than the interpolated values between pure fluids both in the low quality region where the nucleate boiling is dominant and in the high quality region where the convective evaporation is dominant. Measured data of heat transfer are compared to a few available correlations proposed for mixtures. The correlation of Jung et. al. satisfactorily predicted the present data, but the data in lower quality was overpredicted and underpredicted the high quality data. The correlation of Kandlikar considerably underpredicted most of the data. and showed the mean deviation of 35.1%.
Keywords
Convective Boiling; Mass Fraction; Mole Fraction; Non-Azeotropic Refrigerant Mixture;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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