Influence of Width-to-Diameter Ratio on Heat Transfer Performance of Internal Toothed Spiral Element Heat Exchange Tube
Based on the structural improvement of the traditional spiral enhanced heat transfer element in the tube,a new type of internal toothed spiral element heat exchange tube was designed.By using Fluent software,the flow rate field and temperature field in the single liquid phase inside the internal spiral element heat exchange tube at low Reynolds number were simulated to explore the mechanism of its enhanced heat transfer.The influence of different ratio of width to diameter on heat transfer performance of heat exchange tube was also discussed.The results showed that,when the fluid flowed through the four heat transfer elements at 2L/D=0.5,the comprehensive performance was the best,and the PEC value reached 1.454,which was superior to the other three kinds of width-to-diameter heat exchange tubes.
Numerical simulationWidth-diameter ratioHeat transfer performancePEC value
万方数据
维普
