Experimental Study of NanoFluid Heat Transfer in the Entrance Region

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Ezzati, Davoud | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39492 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Nouri Brojerdi, Ali
Abstract:
This project reports an experimental work on the convection heat transfer of nanofluids, made of -AL2O3 nanoparticles and de-ionized water, flowing through a copper tube in the laminar flow regime. The results showed considerable enhancement of convective heat transfer using the nanofluids. The enhancement was particularly significant in the entrance region, and was much higher than that solely due to the enhancement on thermal conduction. It was also shown that the classical Seider and Tate equation failed to predict the heat transfer behavior of nanofluids. Possible reasons for the enhancement were discussed. Migration of nanoparticles and the resulting disturbance of the boundary layer were proposed to be the main reasons
Keywords:
Laminar Flow ; Nanofluid ; Nanoparticles ; Entrance Region

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