Investigation of Enhanced Condensation Heat Transfer outside Vertical Titanium Circularly-Grooved Tube

The investigation of enhanced condensation heat transfer had been conducted on the outside vertical Titanium circularly-grooved tube.The experimental result indicates that the Titanium circularly-grooved tube is fairly efficient in enhancing the heat transfer.Within the experimental scope,the total heat transfer coefficient of the optimum circularly-grooved tube is 1.12 to 1.36 times of that of the Titanium smooth tube.Through regression analysis on the experimental data,the experimental correlations for the in-side heat transfer coefficient,the condensation heat transfer coefficient on film condensation and the friction coefficient were achieved.