Heat transfer of nanofluids - boom or bust

dc.contributor.authorBuongiornoa, J.
dc.contributor.authorHu, Lin-wen
dc.contributor.upauthorMcKrell, T.J.
dc.date.accessioned2014-06-04T13:57:14Z
dc.date.available2014-06-04T13:57:14Z
dc.date.issued2010
dc.description.abstractPaper presented at the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July, 2010.en_US
dc.description.abstractSignificant controversy over reports of extraordinary heat transfer in nanofluids has existed. The results of work performed by our group to help resolve some of these issues will be discussed. Heat transfer in fluids is complex and includes phenomena such as conduction (thermal conductivity), convection (laminar and turbulent), and boiling. The results of tests performed with custom experimental apparatuses, including transient hot wire, pool boiling, quench, flow loops, and high-speed infrared (IR) thermography and digital imaging, will be discussed. Additionally, single phase pressure drop measurements for nanofluids will be presented. It will be shown that the effect of nanofluids on pressure drop and conductive and convective heat transfer can be explained by existing theories, if a nanofluid’s thermophysical properties are used. However, the enhancement of boiling heat transfer, particularly critical heat flux and quenching, is more challenging to interpret using existing theory because of surface effects. Accordingly, the insights gained from measurements of contact angle, IR imaging, and morphological data will be presented.en_US
dc.description.librarianfb2014en_US
dc.format.extent26 pagesen_US
dc.format.mediumPDFen_US
dc.identifier.citationMcKrell, T, Buongiornoa, J & Hu, L-W 2010, 'Heat transfer of nanofluids - boom or bust', Paper presented to the 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Turkey, 19-21 July 2010.en_US
dc.identifier.isbn9781868548187
dc.identifier.urihttp://hdl.handle.net/2263/40007
dc.language.isoenen_US
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_US
dc.relation.ispartofHEFAT 2010en_US
dc.rightsUniversity of Pretoriaen_US
dc.subjectHeat transfer in nanofluidsen_US
dc.subjectHeat transfer in fluidsen_US
dc.subjectThermal conductivityen_US
dc.subjectLaminar and turbulent convectionen_US
dc.subjectSingle phase pressure dropen_US
dc.titleHeat transfer of nanofluids - boom or busten_US
dc.typePresentationen_US

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