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Thermal performance evaluation of heat exchanger tubes equipped with coupling twisted tapes
Author(s)
Date Issued
October 20, 2013
Type
Article
Abstract
The present work has been conducted to investigate the effect of coupling twisted tapes on heat transfer enhancement in a heat exchanger. The effects of (1) twisted tape orientation (co-coupling twisted tapes or counter-coupling twisted tapes), (2) width ratio, and (3) twist ratio were also examined. Results of coupling twisted tapes were also compared to those of a typical twisted tape. Experimental results showed that the use of counter-coupling twisted tapes resulted in higher heat transfer, friction loss, and thermal performance factor than that of co-coupling twisted tapes and typical twisted tapes. Thermal performance factor increased as twist ratio and Reynolds number decreased while width ratio increased. © 2013 Taylor & Francis Group, LLC.
Citation
Experimental Heat Transfer, 26(5), 413-430, 2013