Critical heat flux during subcooled flow boiling of alumina nanofluids in a narrow channel

Saeid Vafaei, Dongsheng Wen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work reported an experimental study of flow boiling e of pure water and aqueous alumina nanofluids in a 0.5 millimetre narrow channel. An open-ended stainless steel a microchannel system is constructed where liquids are supplied by a syringe pump and heated by a variable DC power source, i with synchronized measurement of the surface temperature distribution along the channel and pressure fluctuations associated with bubbles. The effect of nanoparticle concentration, inlet subcooling and mass flow rate and on critical heat flux in a microchannel is investigated. A modest increase in CHF is observed for nanofluids, being higher at s higher particle concentrations and higher inlet subcoolings. c Regular fluctuations in temperature and pressure signals suggest a cyclic boiling events occurring in the narrow channel; [the large pressure fluctuation, coupling with the surface temperature and inlet temperature fluctuations, would affect flow boiling mechanisms in narrow channels.

Original languageEnglish
Title of host publication2010 14th International Heat Transfer Conference, IHTC 14
Pages215-219
Number of pages5
DOIs
StatePublished - 2010
Externally publishedYes
Event2010 14th International Heat Transfer Conference, IHTC 14 - Washington, DC, United States
Duration: 8 Aug 201013 Aug 2010

Publication series

Name2010 14th International Heat Transfer Conference, IHTC 14
Volume1

Conference

Conference2010 14th International Heat Transfer Conference, IHTC 14
Country/TerritoryUnited States
CityWashington, DC
Period8/08/1013/08/10

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