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Enhanced convection in mini channel with CNT fins |
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| รหัสดีโอไอ | |
| Creator | 1. Arjun Kozhikkatil Sunil 2. Rakesh Kumar |
| Title | Enhanced convection in mini channel with CNT fins |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2562 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 41 |
| Journal No. | 3 |
| Page no. | 612-618 |
| Keyword | mini-channels, nanofluid, nanotube fin, pressure drop, thermal performance |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Thermal performance can be improved by modifying the walls of a rectangular minichannel with micro-fins of bundles of ideal single-wall carbon nanotubes (SWCNTs) (circle, square, rectangle, triangle and hexagon) and using a nanofluid. A staggered array yields better thermal performance than an inline array as either a solid or porous medium. The thermal effects with SWCNTs were better than multiwalled carbon nanotubes. Fins as porous media for SWCNTs resulted in heat transfer that was 5% (maximum) greater than solid media. A staggered triangle array yielded better thermal performance as a solid (82%) or porous medium (92%) than an unfinned array. On a minichannel, with or without nanotubes and uniform coating, nanofluid increased the thermal performance with the best performance by CuO/H2O. Thermal enhancement of 226% was obtained using staggered triangular fins with a larger fin height of 0.75 mm, smaller fin width of 0.5 mm, spacing the fins at double the fin width, and 0.01% CuO/H2O nanofluid. The corresponding friction factor differential was found to be 625%. |
