Heat transfer analysis of nanofluids for fixed volume fraction of pipe in pipe heat exchanger using CFD

Abstract

A heat exchanger device having the capability to transfer heat from one source to another. Double pipe heat exchanger (DPHE) has been selected for current study. In this, A metallic solid wall acts as a medium which can separate the two fluids and can transfer the heat though this wall. Nanofluids have higher thermo-physical properties and having high thermal conductivity to enhance the heat transfer. Copper oxide (cuo), silicon oxide (SiO2) and titanium oxide (TiO2) nanofluids are considered to this work. A simulation work is conducted to double pipe heat exchanger to study the heat transfer characteristics. The heat transfer is enhanced 30–40% when temperature maintained at 800C for all mass flow rates. 4–7% and 6–14% high heat transfer coefficient for Cuo nanofluid than TiO2 and SiO2 nanofluids. The global results in this study stating that Cuo nanofluid performed better than TiO2 and SiO2 nanofluids.