Heat transfer enhancement by application of nano-powder

In this investigation, laminar flow heat transfer enhancement in circular tube utilizing different nanofluids including Al 2 O 3 (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...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2010-09, Vol.12 (7), p.2611-2619
Main Authors: Mosavian, M. T. Hamed, Heris, S. Zeinali, Etemad, S. Gh, Esfahany, M. Nasr
Format: Article
Language:English
Subjects:
ALUMINUM OXIDE
Boundary conditions
Characterization and Evaluation of Materials
Chemistry and Materials Science
COMPOSITES
COPPER OXIDE
FLUID FLOW
Heat transfer
Inorganic Chemistry
LAMINAR FLOW
Lasers
Materials Science
MICROSTRUCTURES
Nanocomposites
Nanomaterials
Nanoparticles
Nanostructure
Nanotechnology
Optical Devices
Optics
OXIDES
PARTICLES
Photonics
Physical Chemistry
POWDERS
Research Paper
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Summary:In this investigation, laminar flow heat transfer enhancement in circular tube utilizing different nanofluids including Al 2 O 3 (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.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-009-9840-6