Please use this identifier to cite or link to this item: https://idr.l1.nitk.ac.in/jspui/handle/123456789/10059
Full metadata record
DC FieldValueLanguage
dc.contributor.authorHegde, R.N.-
dc.contributor.authorReddy, R.P.-
dc.contributor.authorRao, S.S.-
dc.date.accessioned2020-03-31T08:18:34Z-
dc.date.available2020-03-31T08:18:34Z-
dc.date.issued2011-
dc.identifier.citationHeat Transfer - Asian Research, 2011, Vol.40, 6, pp.495-512en_US
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/10059-
dc.description.abstractExperiments were carried out to investigate the pool boiling of alumina-water nanofluid at 0.1 g/l to 0.5 g/l of distilled water, and the nucleate pool boiling heat transfer of pure water and nanofluid at different mass concentrations were compared at and above the atmospheric pressure. At atmospheric pressure, different concentrations of nanofluids display different degrees of deterioration in boiling heat transfer. The effect of pressure and concentration of nanoparticles revealed significant enhancement in heat flux and deterioration in pool boiling. The heat transfer coefficient of 0.5 g/l alumina-water nanofluid was compared with pure water and clearly indicates deterioration. At all pressures the heat transfer coefficients of the nanofluid were lower than those of pure water. Experimental observation revealed particles coating over the heater surface and subsequent SEM inspection of the heater surface showed nanoparticles coating on the surface forming a porous layer. To substantiate the nanoparticle deposition and its effect on heat flux, investigation was done by measuring the surface roughness of the heater surface before and after the experiment. While SEM images of the heater surface revealed nanoparticle deposition, surface roughness of the heater surface confirmed it. Based on the experimental investigations it can be concluded that an optimum thickness of nanoparticles coating favors an increase in heat flux. Higher surface temperature due to the presence of nanoparticles coating results in the deterioration of boiling heat transfer. 2011 Wiley Periodicals, Inc.en_US
dc.titleBehavioral study of alumina nanoparticles in pool boiling heat transfer on a vertical surfaceen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

Files in This Item:
File Description SizeFormat 
10059.pdf3.01 MBAdobe PDFThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.