Numerical study of convective heat transfer of ZnO/Water and ZnO/EG Nanofluid in the concentric tube heat exchaner

چکیده مقاله

In this study, forced convection flows of oil as hot stream in inner tube and nanofluid consisting of water and ethylene glycol with ZnO nanoparticles (with 1% Particle volume concentration) as the cold stream in annular tube counter flow heat exchanger are investigated numerically. The test section is modelled and solved using a CFD program. A single-phase model is employed with either constant or temperature dependent properties to study the hydrodynamics and thermal behaviors of the nanofluid flow.