This experimental study deals with the heat transfer and friction effects of
sinusoidal part turbulators for single-phase flows occurring in a circular
shaped pipe. Turbulators with three different radius values are placed in
the pipe to make the flow turbulent. In this way, changes in Nusselt number
and friction coefficient are examined. As a result of the experiments made
with Reynolds numbers in the range of 6614-20710, the increase rates of the
Nusselt numbers of turbulators with 20 mm, 110 mm and 220 mm radius compared
to the empty pipe were obtained as 153.49%, 85.36%, and 52.09%,
respectively. As a result of the decrease in the radius, there was an
increase in the Nusselt number and the friction factor. Parallel to the
Nusselt number, the highest friction factor was obtained in the smallest
radius turbulator. It was found that the thermal enhancement factors of 110
mm and 220 mm radius turbulators increased by 179.54% and 132.95%,
respectively, compared to the 20 mm radius turbulator. Similarly, it was
determined that the thermal enhancement factor of the 110 mm radius
turbulator increased by 20% compared to the 220 mm radius turbulator.
Experimental investigation of the effect of wave turbulators on heat transfer in pipes
