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

Abstract:

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 pbkp_redicted 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. © 1997 by John Wiley & Sons, Ltd.

Año de publicación:

1997

Keywords:

• experiments
• Condensation
• Correlations
• Boiling
• Pressure drop
• Heat transfer coefficients

Fuente:

scopus