Thermal Characteristic Investigation of 2-Propanol Using Graphene Silver Nano Particles

Abstract

Performance of solar PV/T systems, electronic cooling systems, solar collectors, and radiator cooling are highly influenced by nanofluid through improved heat transfer rate. Low thermal conductivity, high viscosity, and low stability are the main problems when using nanofluid. The current research investigation focuses on increasing the thermal conductivity of 2-propanol base fluid by dispersing graphene and silver nanoparticles. Here we diffuse graphene-silver nano powder at a ratio of 1:1 with 2-propanol, at concentrations of 0.01, 0.02, 0.03 and 0.05 weight percentage (wt%). Prepared composite nanofluids are characterized using UV-vis, FTIR, zeta analyser, density meter, and TEMPOS. Results depict the highest possible thermal conductivity to be obtained with graphene-silver/2-propanol at a weight concentration of 0.05 wt%. At lab temperature, the average thermal conductivity of the base fluid was 0.31147 W/m.K, while the average thermal conductivity of the graphene-silver dispersed nanofluid at 0.05 wt% increased to 0.4871 W/m.K. With a rise in temperature to 30–33 °C, thermal conductivity increased to 0.70372 W/m.K, at 0.05 wt%. Any nanofluid-based equipment can be benefitted from this novel nanofluid, which helps to minimise heat and enhance heat transfer capacity.