Experimental Investigation on effect of Turbulators on performance of Heat exchanger
S.A.Khandekar, B.N.Kale
Heat transfer enhancement, v-nozzle, heat transfer, turbulators, reynolds no.
The effects of V-nozzle inserts on heat transfer and friction characteristics in a single tube heat exchanger has been experimentally studied. The v-nozzle with pitch ratio 6.0 used. Experimental investigations have been carried out to study the effects of the V-nozzle turbulators on heat transfer augumentation, friction and enhancement efficiency, in a circular tube. It is found that using the V-nozzle can help to increase considerably the heat transfer rate at about 130% over the plain tube. A maximum gain of 1.23 on enhancement efficiency is obtained for the pitch ratio used, PR=6.0. This indicates that the effect of the reverse/re-circulation flows can improve the heat transfer rate in the tube. In addition, correlations from the results are presented and Reynolds number ranging from 8000 35000 experimentally.
Article Details
Unique Paper ID: 147290

Publication Volume & Issue: Volume 5, Issue 6

Page(s): 317 - 320
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