Title of article :
Prediction of convective boiling characteristics of alternatives to R-502 inside air/refrigerant enhanced surface tubing
Author/Authors :
Samuel M. Sami، نويسنده , , Daniel E. Desjardins، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
15
From page :
579
To page :
593
Abstract :
In this paper, an experimental study on the heat transfer characteristics of two-phase flow boiling of alternative azeotropic refrigerant mixtures to R-502 on air/refrigerant horizontal enhanced surface tubing is presented. Correlations were proposed to predict the heat transfer characteristics such as average heat transfer coefficients, as well as pressure drops of alternatives to R-502; such as R-507, R-404A, R-407B, and R-408A in two-phase flow boiling inside enhanced surface tubing. In addition, it was found that the refrigerant mixture’s pressure drop is a weak function of the mixture’s composition. It was found that the correlations were applicable to the entire heat and mass flux, investigated in the present study for the proposed blends under question. The deviation between the experimental and predicted values for the heat transfer coefficient and pressure drop were less than ±20% and 35%, respectively, for the majority of data.
Keywords :
Boiling , Pressure drop , Mixtures , Correlations , Heat transfer
Journal title :
Applied Thermal Engineering
Serial Year :
2000
Journal title :
Applied Thermal Engineering
Record number :
1023213
Link To Document :
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