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Flow boiling and condensation of tetrary refrigerant mixtures inside water/refrigerant enhanced surface tubing

โœ Scribed by S. M. Sami; B. Song

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
282 KB
Volume
21
Category
Article
ISSN
0363-907X

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โœฆ Synopsis

This work presents the results of an experimental study concerning the heat transfer characteristics of two-phase flow condensation and boiling of tetrary (R-32/R-125/R143a/R134a) refrigerant mixtures inside water/refrigerant horizontal enhanced surface tubing. Heat transfer characteristics such as average heat transfer coefficients, as well as pressure drops of the tetrary refrigerant mixtures, have been predicted and compared with other mixtures during flow condensation and boiling inside enhanced surface tubing. It was found that the tetrary refrigerant blend has higher transfer coefficients than R-502, and the lowest pressure drop among the refrigerants studied.

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