Effect of different types of nanoparticles on thermophysical properties of water based hybrid nanofluids

Abstract

Cooling of micro-electro-mechanical components is the requirement of many industries in today's era. Fluids that are used for the cooling of micro components have low thermal conductivity (k) which is the major limitation that leads to a low heat transfer rate. To overcome such issues, nanofluids come into the picture which plays a vibrant role to raise the heat transfer rate. The suspension of nanoparticles (size below 100nm) into host fluids (oil, ethylene glycol (EG), and water) is used to prepare nanofluids. To understand the basic importance of nanofluids, the thermophysical characteristics of nanofluids have to be studied. Transport (viscosity and density) and thermal (k and specific heat) properties at different temperatures and volume (vol.) concentrations are studied. Hybrid nanofluids (hnf) are important to study for further improvement of heat transfer and also to stabilize the pressure drop. Aluminium oxide (Al2O3,) Copper oxide (CuO) and hybrid (Al2O3:CuO) (40:60) nanoparticles has been taken for the preparation of nanofluids in this present experimentation.