RECENT PROGRESS ON PREPARATION, PROPERTIES AND APPLICATIONS OF NANOFLUIDS

Nanofluids are defined as base fluids containing nanoparticles in suspension, the nanoparticles can be oxides, aluminum oxide, silicon oxide, titanium oxide, metallic nanoparticles, carbon nano tubes, graphene, etc. Nanofluids can be synthesized by two methods and it is necessary to control some of the characteristics such as stability, thermal conductivity, viscosity, etc. Although the presence of nano particles allows generating or improving the characteristic properties of nanofluids, such as their thermal conductivity, it is important to differentiate between the behavior of simple nanofluids and hybrid nanofluids, since in some cases they present different behaviors. Nanofluids have multiple applications in automotive, biomedicine, as coolants, etc. This article reviews nanofluids and their types: nanolubricants, nanorefrigeramts, simple nanofluids, hybrid nanofluids, the nanoparticles used to obtain them, as well as the properties and variables considered in their elaboration and finally some of the applications and uses. For this purpose, articles have been searched and compiled using the keywords: nanofluids, nanorefrigerants, nanolubricants in the Science direct database. It is hoped that the information analyzed will be useful for those entering the field of nanofluids.