Proceedings of the 2010 International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT 2010)
86 Heat Transfer Enhancement by Using Nanofluids in Laminar Forced Convection Flows Considering Variable Properties
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Nanofluids are considered to offer important advantages over conventional heat transfer fluids. The effects of alumina nanoparticles on convective heat transfer through a circular tube with a constant heat flux condition in a laminar flow regime have been numerically studied. The effects of nanoparticles concentration and Reynolds number are investigated in three types of base heat transfer fluids, which are pure water, water-ethylene glycol mixture and pure ethylene glycol. In general heat transfer enhancement, increase considerably with an augmentation of the Reynolds number. Also heat transfer increase with increasing the particle concentration.