Heat Transfers in Tubes Fitted with Single, Twin, and Triple Twisted Tapes

Authors: Chang, Shyy; Yu, Ker-Wei; Lu, Ming

Source: Experimental Heat Transfer, Volume 18, Number 4, Number 4/October-December 2005 , pp. 279-294(16)

Buy & download fulltext article:

Price: $56.94 plus tax (Refund Policy)

Abstract:

This experimental study performs heat transfer and pressure drop measurements in three test tubes fitted with single, twin, and triple twisted-tapes with Reynolds number (Re) varying from 1,500 to 14,000. Each element of these continuous twisted-tapes that formulates the single, twin, and triple twisted-tapes has identical width, pitch, and thickness. Heat-transfer augmentations from the plain-tube conditions in three test tubes decrease with the increase of Re, while the descending rate decreases with the increase of twisted-tape in the tube. These twisted-tapes generate the more effective heat transfer enhancements in laminar flow regime than those developed in turbulent flow regime. With 3,000 = Re

Keywords: heat transfer augmentation; twisted tape

Document Type: Research article

DOI: http://dx.doi.org/10.1080/08916150500201560

Affiliations: 1: Department of Marine Engineering, National Kaohsiung Marine University, Kaohsiung, R.O.C., Taiwan

Publication date: 2005-10-01

More about this publication?