Study and analysis of concentric shell and double tube heat exchanger using Tio2 Nano fluid

الملخص EN

In this paper, nanofluid of TiO2/water of concentrations of 0.002% and 0.004% volume was used.

This nanofluid was flowing through heat exchanger of shell and concentric double tubes with counter current flow to the hot oil.

The thermal conductivity of nanofluid is enhanced with increasing concentrations of the TiO2, this increment was by 19% and 16.5% for 0.004% and 0.002% volume respectively relative to the base fluid (water).

Also the heat transfer coefficient of the nanofluid is increased as Reynold's number and nanofluid concentrations increased too.

The heat transfer coefficient is increased by 66% and 49% for 0.004% and 0.002% volume respectively relative to the base fluid.

This study showed that the friction factor of nanofluid was decreased as Reynold's number increased.