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STUDY OF BOILING CHARACTERISTICS OF R744/R1270 IN A SMOOTH HORIZONTAL TUBE

A.Ramanan, P.Senthilkumar, V.Natarajan, Amala Justus Selvam

This paper presents the boiling heat transfer characteristics of the refrigerant mixture of R744/R1270 flowing through the horizontal smooth tube. The refrigerant mixture is studied in different mass and heat flux conditions. Experimental results on the heat transfer coefficient, inner wall temperature, exergy and Nusslet number of mass flux from 40 to 80 kg/ m2 s and 15 to 24 Kw/m2s in a horizontal smooth tube of 4 mm inner diameter are provided