Heat Transfer Enhancement Of Nanofluids. Choi 1995 quantitatively analyzed some potential benefits of nanofluids for augmenting heat transfer and reducing size weight and cost of thermal apparatuses while incurring little or no penalty in pressure drop. An overall 20 increase in heat transfer coefficient of the nanofluid was observed compared to distilled water.
Some methods are utilization of extended surfaces application of vibration to the heat transfer surfaces and usage of micro channels. They concluded that the use of a nanofluid is suitable for natural convection and other heat transfer processes due to the enhancement of the thermal properties of the nanofluid. Choi 1995 quantitatively analyzed some potential benefits of nanofluids for augmenting heat transfer and reducing size weight and cost of thermal apparatuses while incurring little or no penalty in pressure drop.
The increase in viscosity is also very small when lower concentrations of nano particles are dispersed in base fluids.
Temperature involved heat flux density the volume fraction of the nanofluid used nanofluid layer thickness space availability for the cooling system and mass of the nanoparticle influence heat transfer enhancement. Most of the recent studies showed that the solid nanoparticles with a high thermal conductivity when suspended in the base fluid would enhance the convective heat transfer coefficient and the. The heat conductivities of liquids with suspended particles are relied upon to be higher than that of normal liquids. Nanofluids are gaining the attention of scientists and researchers around the world.