Author： Mosavian M. Heris S. Etemad S. Esfahany M.
Publisher： Springer Publishing Company
ISSN： 1388-0764
Source： Journal of Nanoparticle Research, Vol.12, Iss.7, 2010-09, pp. : 2611-2619
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Abstract
In this investigation, laminar flow heat transfer enhancement in circular tube utilizing different nanofluids including Al2O3 (20 nm), CuO (50 nm), and Cu (25 nm) nanoparticles in water was studied. Constant wall temperature was used as thermal boundary condition. The results indicate enhancement of heat transfer with increasing nanoparticle concentrations, but an optimum concentration for each nanofluid suspension can be found. Based on the experimental results, metallic nanoparticles show better enhancement of heat transfer coefficient in comparison with oxide particles. The promotions of heat transfer due to utilizing nanoparticles are higher than the theoretical correlation prediction.
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