Review on application CuO/distilled water &amp; Al<inf>2</inf>O<inf>3</inf>/distilled water for enhancement heat transfer characteristics in cooling systems

The brief review is made by considering various thermo-physical properties such as thermal conductivity, density, dynamic viscosity and specific heat which govern the Copper Oxide (CuO) and Aluminum Oxide (Al2O3) nanoparticle based nano-fluids; and its applications in the literatures. This paper also summarize the technique used for preparation of stable nano-fluids. Most effort is taken to account the contributions of various experimental and numerical studies available in literature on two types of (CuO) and (Al2O3) nanoparticle on heat transfer performances and preparation of stable nano-fluids. However, there are many challenges and issues of nano-fluids that need to be addressed by using more experimental applications.