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Experimental insights into heat transfer mechanisms in a turbulent channel flow with inclined V-shaped baffles |
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| รหัสดีโอไอ | |
| Creator | K. Buanak |
| Title | Experimental insights into heat transfer mechanisms in a turbulent channel flow with inclined V-shaped baffles |
| Contributor | P. Thapmanee, C. Homniam, A. Phila, W. Keaitnukul, S. Eiamsa-ard, N. Maruyama, M. Hirota |
| Publisher | Thai Society of Mechanical Engineers (TSME) |
| Publication Year | 2569 |
| Journal Title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| Journal Vol. | 14 |
| Journal No. | 1 |
| Page no. | JRAME-26-14-009 (p.1-15) |
| Keyword | Heat transfer coefficient, Inclination angle, V-shaped baffles, Thermal-hydraulic performance |
| URL Website | https://ph01.tci-thaijo.org/index.php/jrame/index |
| Website title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| ISSN | 2229-2152 |
| Abstract | This study conducts an experimental analysis of heat transfer and pressure drop in a solar air preheater channel with an aspect ratio (AR) of 3.75:1, featuring inclined V-shaped baffles (I-VB) on one wall under continuous heat flux circumstances. The study focuses on the effects of the inclined angles on the heat transfer coefficient (h), pressure drop (DP) and thermal-hydraulic performance (THP). The inclined angles (q) explored include 0?, 45? and 90?, with attack angles (a) set at 45?, and Reynolds numbers (Re) varying from 6000 to 24,000. The experimental results show that the inclined angles significantly affect the temperature distribution, Nusselt number distribution, friction factor, and thermal-hydraulic performance. The heat transfer rates in channels with inclined V-shaped baffles (I-VB) at inclined angles of 0?, 45? and 90? are 13.95-53.46%, 165.29-361.08%, and 175.91-378.34% higher than those in a smooth channel, respectively. However, the corresponding pressure losses increase by 2.01-2.87, 10.42-13.37, and 15.03-19.91 times for these inclined angles. At all Reynolds numbers, the inclined V-shaped baffles with an inclined angle (?) of 45? demonstrate superior thermal-hydraulic performance, reaching a peak value of 1.94 at a lower Reynolds number of 6000. |
