Stable colloidal copper nanoparticles for a nanofluid: Production and application

- A layer of PVP is coated onto copper nanoparticles to minimize their agglomeration.
- Stable colloidal copper nanoparticles were prepared and used to prepared a nanofluid.
- Convective heat transfer properties of a colloidal copper nanofluid were studied.
- The heat transfer coefficient increases with concentration of colloidal copper nanoparticles.
- Enhancement in the heat transfer coefficient was observed at different Reynolds numbers.