This paper presents results of investigations on the application of CuO-water nanofluids for intensification of convective heat transfer. Performance of nanofluids with 2.2 and 4.0 vol.% CuO NPs (nanoparticles) content were examined with regard to heat transfer coefficient and pressure losses in case of turbulent flow in a tube. Negligible impact of examined nanofluid on heat transfer improvement was found. Moreover, measured pressure losses significantly exceeded those determined for primary base liquid. The observations showed that application of nanofluid for heat transfer intensification with a relatively high solid load in the examined flow range is rather controversial.

The publication presents experimental verification of a mathematical model of silver nanowire (AgNWs) fabrication in a continuous flow process in a helical tubular reactor. Silver nanowires were synthesised with a polyol process, with ethylene glycol as the reductant of the nanomaterial precursor and solvent of the reactants. The observed average diameters and lengths of AgNWs were 98-226 nm and 5-45 μm, respectively. The experimental conversions of the precursor were 0.71-0.90. A comparison of calculated and measured conversions for the investigated range of residence times and temperatures showed that the observed error was less than 20%.