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Proceedings Paper

Flow and heat transfer of petal shaped double tube
Author(s): Toshihiko Shakouchi; Yuki Kawashima; Koichi Tsujimoto; Toshitake Ando
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Paper Abstract

In this study, the flow and heat transfer characteristics of petal-shaped double tube with 6 petals are examined experimentally for a compact heat exchanger. As results, the heat transfer rate, Q, of the 6 petal shaped double tube (6-p tube) is much larger than that, Qp, of conventional circular double tube in all Reynolds number Rein,h (where, the reference length is hydraulic diameter) ranges. For example, at Rein,h =(0.5~1.0)× 104 it is about 4 times of Qp. The heat transfer enhancement of 6-p tube is by the increase of heat transfer area, wetting perimeter, and a highly fluctuating flow, and Q of the 6-p tube can be expressed by Q [kW/m] = 0.54Rein,h + 2245.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9234, International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics, 92340C (2 June 2014); doi: 10.1117/12.2052985
Show Author Affiliations
Toshihiko Shakouchi, Mie Univ. (Japan)
Yuki Kawashima, Mie Univ. (Japan)
Koichi Tsujimoto, Mie Univ. (Japan)
Toshitake Ando, Mie Univ. (Japan)


Published in SPIE Proceedings Vol. 9234:
International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics
Somnuk Sirisoonthorn, Editor(s)

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