Ghanbarali Sheikhzadeh - Associate Professor, Department of Thermo & fluids, faculty of Mechanical Engineering and Energy Research Institute, University of Kashan, Kashan, Iran
Ali Marzban - PhD Candidate in Mechanical Engineering, Department of Thermo & fluids, faculty of Mechanical Engineering and Energy Research Institute, University of Kashan, Kashan, Iran
Majid zarringhalam - Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran
Gholamreza Ahmadi Sheikh Shabani - Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran

In this Research, copper oxide/water (CuO-H2O) nanofluid in a very low volume fraction 0.000625(%0.0625), has been investigated inside heat exchanger within Double-tube heat exchanger and Reynolds number in the range of 3,000 to 18,000. The results of performed tests in this Research, under turbulent flow regime are values of convection heat transfer coefficient, Nusselt number, Pressure drop, friction coefficient of nanofluid than that of the water-base fluid. Finally, it was observed that addition of this low amount of copper oxide nanoparticles in the water-base fluid, lead to increase in convection heat transfer coefficient and causes nanofluid Pressure drop due to water-base fluid.

Reynolds number, volume fraction on nanoparticles, Copper oxide/water (CuO-H2O) nanofluid, Two tubular heat exchanger