Experimental Study on Local Subcooled Flow Boiling Heat Transfer in a Vertical Mini-Gap Channel
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V001T03A005-ICNMM2016-7959.pdf
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Author(s)
Li, Jun-ye
Zhou, Kan
Li, Wei
Feng, Zhao-zan
Coyle, Carolyn P.
Buongiorno, Jacopo
McKrell, Thomas J.
Date Issued
July 2016
Journal
ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels
Publisher
ASME International
Citation
Li, Jun-ye, Zhao-zan Feng, Carolyn Coyle, Thomas J. McKrell, Jacopo Buongiorno, Kan Zhou, and Wei Li. “Experimental Study on Local Subcooled Flow Boiling Heat Transfer in a Vertical Mini-Gap Channel.” ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels (July 10, 2016), Washington, DC, USA, ASME. © 2016 by ASME
Version
Final published version
Abstract
An experimental study of subcooled flow boiling in a high-aspect-ratio, one-sided heating rectangular mini-gap channel was conducted using deionized water. The local heat transfer coefficient, onset of nucleate boiling, and flow pattern of subcooled boiling were investigated. The influence of heat flux and mass flux were studied with the aid of a high-speed camera. The results show that the flow pattern was mainly isolated bubbly flow when the narrow microchannel was placed vertically. The bubbles generated at lower mass fluxes were larger and did not easily depart, forming elongated bubbly flow and flowing upstream. The thin film evaporation mechanism dominated the entire test section due to the elongated bubbles and transient local dryout as well as rewet. The local heat transfer coefficient near the exit of the test section was larger.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1115/ICNMM2016-7959
