Experimental Investigation of the Effect of Graphene/Water Nanofluid on the Heat Transfer of a Shell-and-Tube Heat Exchanger

The most common type of heat exchanger used in a variety industrial applications is the shell-and-tube (STHE). In this work, impact graphene nanoplate (GNP)/water nanofluids at 0.01 wt.%, 0.03 and 0.06 wt.% on thermal efficiency, performance factor, pressure drop, overall transfer, convective transfer coefficient (CVHTC), characteristics was examined. For these experiments, new STHE designed built. novelty study use GNPs/water for first time fully experimental investigation attributes nanofluids. GNP properties were analysed confirmed using analyses including XRD TEM. Zeta potential, DLS, camera images to examine stability various periods. zeta potential lower than -27.8 mV, confirming good GNP/water results illustrated that data distilled water had reasonably agreement with Sieder-Tate correlation. maximum enhancement CVHTC nanofluid GNP, equal 910 (W/m2K), an increase 22.47%. Also, efficiency improved by 8.88% compared base fluid. rate concentration volume flow 3915 (J/kg.K), improvement 15.65% over drops increased as increased. Although increasing drop tubes would CVHTC, it also power consumption pump. conclusion, performance.