Experiment and CFD Simulation of Boiling Heat Transfer Coefficient of R410A in Minichannels

Abstract

This study performed a comparison between experimental and computational fluid dynamic (CFD) simulation results of boiling heat transfer coefficient of R410A in a small tube. The experimental data were obtained in the horizontal circular tubes of 3.0[Formula: see text]mm inner diameter, the length of 3000[Formula: see text]mm including: mass flux and heat flux in a range from 300[Formula: see text]kg/m2s to 600[Formula: see text]kg/m2s and from 5[Formula: see text]kW/m2 to 10[Formula: see text]kW/m2, respectively, and the saturation temperature constantly kept at 20[Formula: see text]C. In the simulation procedure, the Eulerian multiphase with wall boiling were obtained. The effects of mass flux and heat flux on the heat transfer coefficient of R410A were analyzed. The comparative data between CFD and experiment was also illustrated.