Thermophysical properties of MWCNT-Alumina/water nanofluid and their influence on the performance of free convection heat transfer

Thermal conductivity of the traditional fluids such as water, ethylene glycol (EG), propylene glycol (PG), and transformer oil is low compared to solids.So, these fluids offer less heat transfer performance.Choi [1] first coined the nanofluids by dispersing nanosized (< 100 nm) particles into the carrier fluid and observed the improved results.Nanofluids exhibit better thermophysical properties compared to conventional liquids.Among metallic, metallic oxide, and carbon-related materials, multi-walled carbon nanotubes (MWCNT) and Aluminum oxide (Al 2 O 3 ) are the two types of nanoparticles commonly used to synthesize nanofluids. *Author for correspondenceIt is difficult to comprehend how nanofluids behave and what effect they have on heat transfer processes.The behaviour of nanofluids is impacted by variables including particle size, concentration, and temperature, despite the fact that they have better thermal conductivity and other features [25].The overall efficacy of nanofluids in real-world applications can also be impacted by problems with nanoparticle stability and aggregation.The requirement for more efficient heat transfer strategies motivates the study of the thermophysical properties of MWCNT-Al 2 O 3 /water nanofluid and their impact on natural convection.A fundamental method of heat transmission that results from changes in fluid density brought on by temperature gradients is called natural convection.