Heat transfer and friction factor characteristics in turbulent flow through a tube fitted with perforated twisted tape inserts

Effect of Twisted - Tape Tubulators on Heat Transfer and Flow Friction inside a Double Pipe Heat Exchanger

“…3(a) and (b) show the comparison of Nusselt number and friction factor of the plain tube obtain from the simulation results with those from the proposed correlations. The data from the simulation are in agreement with Dittus-Boelter's Nusselt number and Blasius's friction factor correlations [9] with the discrepancy of less than 1.97%, 1.55%, respectively. The heat transfer rate of twist-tapes type 1 and 2 insert in terms of Nusselt number is shown in Fig.…”

“…In order to appraise the heat transfer augmentation performance of the two different perforated twist-tapes insert with plain tube [9]. Heat transfer enhancement efficiency calculated using Eq.…”

A Review of Heat Transfer Enhancement Methods Using Coiled Wire and Twisted Tape Inserts

“…The results demonstrated that using CuO nanofluid with twisted alternate axis (TA) obtain a higher Nusselt number and thermal performance, and the twisted tape in alternate axis was about 89% more effective than typical twisted tape. Various types of twisted tape such as hollow, double, perforated, and dimpled configurations based on the physical properties, e.g., hollow widths and hole diameters, were investigated in many studies [17][18][19][20][21]. Li et al [22] carried out a numerical study on her transfer enhancement in a tube with centrally hollow narrow twisted tape under laminar flow conditions.…”

CFD Analysis on Heat Transfer Enhancement in 4-Holed Cored Brick Regenerator by Inducing Turbulence

“…Outlet was specified as pressure outlet, which fixes static pressure as 1.013x10 4 Pa. Outer surface of storage system was insulated to reduce heat loss from storage system was set as zero heat flux.…”