Critical heat flux enhancement in pool boiling using alumina nanofluids |
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| Authors: | Ramakrishna Hegde Srikanth S. Rao R.P. Reddy |
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| Affiliation: | 1. NITK, Bangalore, Karnataka, India;2. Department of Mechanical Engineering, NITK, Mangalore, India;3. Reva Institute of Technology, Bangalore, Karnataka, India |
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| Abstract: | The pool boiling characteristics of dilute dispersions of alumina nanoparticles in water were studied. Consistent with other nanofluid studies, it was found that a significant enhancement in critical heat flux (CHF) can be achieved at modest nanoparticle concentrations (<0.1% by volume). During experimentation and subsequent inspection, formation of a porous layer of nanoparticles on the heater surface occurred during nucleate boiling. This layer significantly changes surface texture of the heater wire surface which could be the reason for improvement in the CHF value. © 2010 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/htj.20301 |
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| Keywords: | nanofluids nanoparticle deposition critical heat flux pool boiling |
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