An experimental study with the deionized water was conducted on the heat transfer and flow resistance properties in the internal of the titanium alloy twisted tube. A comparison with the same specification of ordinary tube was carried out. The correlation equations with the Nusselt number and the resistance coefficient were given respective by according to the results of experiment. By comparing with the classical correlations, results showed that heat transfer correlations of transition flow and turbulent flow in a titanium alloy twisted tube were obtained and good agreement was observed between the experimental data and the classical correlations presented by Dittus?Boelter, Sieder?Tate, Михеев and Gnielinski equations, respectively.
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