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- Title
Experimental and numerical investigation of thermal characteristics of a novel concentric type tube heat exchanger with turbulators.
- Authors
Şahin, Hacı Mehmet; Baysal, Eşref; Dal, Ali Rıza
- Abstract
SUMMARY In this study, the heat transfer performance and friction characteristics of a novel concentric tube heat exchanger with different pitches of helical turbulators were investigated experimentally and numerically for a Reynolds number range from 3000 to 14 000. An experimental system was established to obtain experimental data. The numerical simulations were performed by using a three dimensional numerical computation technique, a commercial CFD computer code. Then, the heat transfer performance and friction characteristics of several helical turbulators were compared. The experimental, numerical and empirical correlation results were in a good agreement with each others. As a result, the heat transfer enhancements using turbulators were 2.91, 2.41, 2.18 and 1.99 times better than the smooth tube for pitch distances of p = 20, 40, 60 and 80 mm, respectively. Copyright © 2012 John Wiley & Sons, Ltd.
- Subjects
HEAT exchangers; FRICTION; REYNOLDS number; COMPUTER simulation; COMPUTATIONAL fluid dynamics
- Publication
International Journal of Energy Research, 2013, Vol 37, Issue 9, p1088
- ISSN
0363-907X
- Publication type
Article
- DOI
10.1002/er.2919