Heat Transfer in a Tube Fitted with Vertical and Horizontal Wing-Cut Twisted Tapes

• Published in: Experimental heat transfer Vol. 25; no. 1; pp. 30 - 47
• Main Authors: Murugesan, P., Mayilsamy, K., Suresh, S.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis Group 19-01-2012; Taylor & Francis Ltd
• Subjects: Fluid mechanics; Friction; friction factor; Heat transfer; heat transfer enhancement; plain twisted tape; secondary flow; Temperature; wing-cut twisted tape
• ISSN: 0891-6152; 1521-0480
• DOI: 10.1080/08916152.2011.559567

This article reports an experimental investigation on the heat transfer, friction factor, and thermal enhancement factor of a tube equipped with vertical wing-cut twisted tapes, horizontal wing-cut twisted tapes, and plain twisted tapes with twist ratios of y = 2.0, 4.4, and 6.0. The obtained results reveal that the heat transfer rate, friction factor, and thermal enhancement factor in the tube equipped with horizontal wing-cut twisted tapes are significantly higher than those in the tube fitted with vertical wing-cut twisted tapes, plain twisted tapes, and a plain tube. An empirical correlation is subsequently derived from the experimental results.