Abstract
Abstract The experimental work on heat transfer augmentation using a new kind of insert called twisted tape with continuous cut edges is carried out. The work includes the determination of friction factor and Nusselt number for new twisted tape insert having different twist ratios of 3 & 5. The experimental data obtained from plain tube and conventional twisted tape were verified with the standard correlations to ensure the validation of experimental results. The results of new twisted tape of different twist ratios have been compared with the values for the plain tube and tube with conventional twisted tape. In addition, the effects of the new twisted tape insert on the thermal performance factor are also investigated. The results obtained lead to the conclusion that higher heat transfer rates can be achieved using twisted tape inserts with continuous cut edges at the expense of a reasonable pressure drop.
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