Preliminary Results of Heat Transfer and Pressure Drop Measurements on Al2O3/H2O Nanofluids through a Lattice Channel

A nanofluid is composed of a base fluid with suspension nanoparticles that improve the fluid’s thermophysical properties. In this work, authors have conducted experimental tests on an alumina-based (Al2O3/H2O) moving inside 3D-printed lattice channel. The unit cell’s shape can be considered double X or pyramidal truss common vertex. test channel 80 mm long and has cross-sectional area, without internal dimensions H × W, = 5 W 15 mm. duct represent good compound technique for enhancing heat transfer. heated by electrical resistance wound onto its outer surface. transfer rate absorbed nanofluid, convective coefficients, pressure drops are evaluated. carried out at various volumetric contents (φ 1.00%, φ 1.50% 2.05%) flow rates (from 0.2 L/min to 2 L/min). preliminary results show in range between 0.5 ÷ 2.0 L/min, values coefficients greater than those pure water 0) all concentrations Al2O3; thus, higher thermal power water, average increase 6%, 9%, 14% 2.05% volume concentrations, respectively. not very different from water; therefore, use nanofluids also increased cooling efficiency system.