Heat transfer studies in a plate heat exchanger using Fe2O3-water-engine oil nanofluid

Improving the heat transfer performance of conventional fluid creates significant energy savings in process Industries. In this aspect, an experimental study was performed to evaluate Fe2O3-water (W)-engine oil (EO) nanofluid at different concentrations and hot inlet temperatures a plate exchanger. Experiments were conducted by mixing Fe2O3 nanoparticles (45 nm) W-EO mixture base with volume fractions 5% EO + 95% W 10% +90% W. The main aim present assess impacts nanoparticle fraction temperature variations on prepared nanofluid. convective coefficient, Reynolds, Prandtl, Nusselt numbers determined based results. result shows that 75 ?C, increase number coefficient are optimum 0.9 vol. % for both mixtures. is because Brownian motion (increasing thermal conductivity) effect, caused gradient (Thermo-phoretic), due concentration (Osmophoretic). If increases, then Reynolds increment higher than Prandtl decrement, which augments coefficient.