Cfd analysis comparison of tapered helical and square coil heat exchanger bu using different types of nanofluid with oil as its base fluid in aluminium and copper tube

The recovery of waste heat has been a topic of concern for large-scale industrial companies for several decades. This recovery not only makes an operation more environment friendly, but it also helps to cut costs. In addition to this, it can reduce the amount of resources needed to power a facility. Many industries have implemented different methods of waste heat recovery. In this present paper the efforts are made to understand that how to compare the heat transfer rate in Copper and aluminium tapered helically coiled tube heat exchanger using different types of Nano fluid with Oil as a base fluid in Tapered Helical Coil Heat Exchanger with the help of CFD on copper and aluminium tube. TheAl2O3&MgO, are used as Nano fluid and oil as a base fluid. Tapered Helical coil was fabricated by bending 500 mm length of copper tube having 10mm tube diameter, 50mm pitch coil diameter, 20mm pitch and tapered angle 20 and Square shaped coil was fabricated by bending 500 mm length of copper tube having 10mm square side, 50mm pitch coil dia, 20 mm pitch and tapered angle 20. The comparison of pressure drop and temperature variation between MgO and Al2O3nano fluid with oil as its base in aluminium and copper tube found in this analysis. The result indicates that the MgO nanofluid with oil as a base fluid in helical copper tube have maximum pressure drop and also have maximum temperature variation compare with other nano fluid and other material.