Heat transfer and pressure drop characteristics of HFC quaternary refrigerant mixtures inside horizontal enhanced surface tubing

Abstract:

Heat transfer characteristics of two-phase flow condensation and boiling of quaternary (four components) refrigerant mixtures, on air/refrigerant horizontal enhanced surface tubing are presented, discussed and compared to other refrigerants proposed as substitutes for CFC-502, such as R-507 and R-407B. Heat transfer characteristics, such as average heat transfer coefficients, as well as pressure drops of ternary azeotropic refrigerant mixtures, flow condensation and boiling inside enhanced surface tubing, were pbkp_redicted. Experimental data showed that our proposed quaternary blend has a superior boiling heat transfer coefficient and higher pressure drop compared to CFC-502. Copyright © 1996 Elsevier Science Ltd.

Año de publicación:

1996

Keywords:

• Enhanced surface tubing
• Condensation
• Refrigerant mixtures
• Boiling

Fuente:

scopus