Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 76, Issue -, Pages 523-533Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2014.04.056
Keywords
Refrigerants; Evaporative heat transfer; R134a; R407C; Smooth tube; Inclined
Categories
Ask authors/readers for more resources
An experimental investigation on two phase flow evaporative heat transfer of refrigerants R134a and R407C in a smooth copper tube inclined at five different angles between 0 degrees and 90 degrees was conducted. The experimental data were obtained over a mass velocity range of 100-300 kg/m(2) s, heat flux range of 3-10 kW/m(2), inlet temperature range of 5-9 degrees C and vapor quality varied from 0.1 to 0.9. The test section was 1.2 m long, smooth copper tube with inner diameter of 7.0 mm and outside diameter of 9.52 mm. The effects of mass velocity, heat flux, and vapor quality and tube inclinations on evaporative heat transfer coefficient of both refrigerants are thoroughly compared. The experimental heat transfer coefficients were also compared with some existing correlations. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available