FLOW ANALYSIS OF CuO/WATER NANO-FLUID FLOW IN A DOUBLE PIPE U-BEND HEAT EXCHANGER BY USING CFD

THERMAL ENGINEERING

CFD analysis is performed for the estimation of convective heat transfer and friction factor of CuO/water nano-fluid flow in a double pipe U-bend heat exchanger based in the single phase fluid approach method in the Reynolds number range from 3000 to 22000. The prototype of U-bend heat exchanger was developed using ANSYS 16.0 workbench. The inner and annulus tube materials used in this study is stainless steel and cast iron respectively. The particle volume concentrations of 0.1% and 0.3% were used in this analysis. The mass flow rate of hot fluid kept constant and the mass flow rate of CuO/water nano-fluid varies from 0.2 to 0.4 kg/sec. The temperatures of nano-fluids flow in a heat exchanger are kept at 345 K. The results revealed that as volume fraction and Reynolds number increased Nusselt number increased, and friction factor decreased. Based on the numerical results, the Nusselt number enhancement for 0.3% nano-fluid is 18% with a friction penalty of 1.4-times compared to water results.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.