Experimental Study of Local Heat Transfer Coefficient of R113 Flow Boiling in Vertical Square Tube

Abstract:

This article is based on the experimental investigations on flow boiling heat transfer of R113 with the equivalent diameter of the square tube 15.66mm, mass flow rate 500 ~ 2000kg / (m2•s), steam quality from 0.1 to 1, heat flux 50 ~ 90kW/m2, and pressure 100 ~ 250 kPa. The experimental results show that with the rise of heat flux and mass velocity the local convection heat transfer coefficient increases, and with the enhancement of steam quality the local convection heat transfer coefficient increases firstly and then decreases. By comparison of the experimental data and the calculation results of predecessor’s correlations, a correction coefficient applicable to this experiment was obtained.

• Periodical: Advanced Materials Research (Volumes 374-377)
• Pages: 622-625
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.622
• Online since: October 2011
• Authors: Wei Sun, Ya Jun Guo, Qin Cheng Bi, Bin Gao, Ying Kun Xu
• Keywords: Boiling Heat Transfer, Correction Factor, Local Convection Heat Transfer Coefficient, Vertical Square Tube

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