The Investigation of Appendages Vortex Effect on the Main working Parameter of the Tube - finned Heat Exchanger

In this paper, the effect of geometric parameters on the performance of tubes - finned heat exchanger is investigated. For this purpose, four triangular vortex generating process such as simple and angled types of triangle and square appendages are considered to increase the rate of heat transfer between the fluid and the fin and tube walls. Furthermore, the effects of these appendages on heat exchanger pressure, friction and its performance are demonstrated. The comparisons between numerical data with the published results show an accurate agreement with an error up to 5.3%. The maximum increasing the Nusselt number and pressure loss versus Reynolds number is concerned to base model and angled cubic appendages respectively with values of 80% and 2.95%.