Improving the thermal characteristics of a cooling tower by replacing the operating fluid with functionalized and non-functionalized aqueous MWCNT nanofluids

In this study, the thermal properties of operating fluid by replacing with better and lower water loss in a cross-flow cooling tower (CFWCT) investigated. For purpose, MWCNTs/H2O, MWCNTs-COOH/H2O, MWCNTs-OH/H2O nanofluids were used instead water, results compared. The visual method dynamic light scattering (DLS) to guarantee stability determine size distribution nanoparticles nanofluid. influence concentration on towers performance variables such as evaporation rate, characteristics, temperature drop, efficiency showed that functionalized rates than non-functionalized higher improved CFWCT. example, at 0.1 wt% MWCNTs-OH/H2O, was 46%, 45.3%, 43.2%, characteristics 15.8%, 11.2%, 6.1%, respectively, compared water. Among nanofluids, MWCNTs-COOH/H 2 O nanofluid had best performance, which increased about ?4.3%, 15.9%, 8.7%,