Forced Convective Heat Transfer Experiment of Supercritical Water in Different Diameter of Tubes

Abstract

The forced convection experiment of supercritical water was performed in Inconel-625 tubes of Di = 4.62, 7.98 and 10.89 mm. The water flowed upward, covering the ranges of pressure of 23.5 – 25.6 MPa, mass flux of 220 – 3100 kg/m²s, water temperature of 120 – 415°C and the heat flux of up to 1.95 MW/m². The results exhibited the deterioration and enhancement heat transfer. The experiment was compared with the predictions of Dittus-Boelter, Jackson et al., Yamagata et al., Bishop et al, and Swenson correlations. None of them can well agree with the present results for the whole conditions. The experimental data were predicted by the correlation obtained in the present lab for natural circulation conditions.