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XIA, Guodong, CHENG, Yue, CHENG, Lixin and LI, Yifan (2018). Heat transfer characteristics and flow visualization during flow boiling of acetone in semi-open multi-microchannels. Heat Transfer Engineering, 1-14.
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Abstract
Experimental results of flow boiling characteristics and flow patterns with acetone in two different microchannel heat sinks are presented in this paper. A semi-open microchannel heat sink and a straight microchannel heat sink with 19 parallel microchannels each were designed and tested. The semi-open microchannels have a channel width of 0.8 mm, fin width of 0.4 mm, and pedestal height of 0.2 mm and the straight microchannels have a rectangular cross section of 0.8 mm × 1 mm. The experimental heat fluxes ranged from 0 to 90 kW/m2, vapor quality ranged from 0.05 to 0.5, mass fluxes ranged from 4.34 to 15.62 kg/m2·s and the inlet temperatures were 20 and 30°C, respectively. Compared to those in the straight microchannels, flow boiling heat transfer coefficients can be improved by up to 36.2%. Furthermore, flow patterns were observed with a speed video camera. The flow boiling heat transfer mechanisms are analyzed according to the observed flow patterns
| Item Type: | Article |
|---|---|
| Additional Information: | ** From Crossref via Jisc Publications Router. |
| Uncontrolled Keywords: | Mechanical Engineering, Condensed Matter Physics, Fluid Flow and Transfer Processes |
| Departments - Does NOT include content added after October 2018: | Faculty of Science, Technology and Arts > Department of Engineering and Mathematics |
| Identification Number: | https://doi.org/10.1080/01457632.2018.1470296 |
| Page Range: | 1-14 |
| SWORD Depositor: | Margaret Boot |
| Depositing User: | Margaret Boot |
| Date Deposited: | 11 May 2018 11:43 |
| Last Modified: | 18 Mar 2021 05:13 |
| URI: | https://shura.shu.ac.uk/id/eprint/21057 |
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