A Comparative study on the characteristics of carbon nano tubes and graph ene nano fluids for efficiency enhancement of nuclear power plant heat exchanger

Heat transfer is one of the most important processes in many industrial and consumer products. The inherently poor thermal conductivity of conventional fluids puts a fundamental limit on heat transfer. Therefore, for more than a century since Maxwell, scientists and engineers have made great efforts to break this fundamental limit by dispersing micrometer or nano sized particles in liquids. The nano fluid terminology, which describes fluid combined nanoparticles, was introduced by Choi of the Argonne National Laboratory in the U.S Department of Energy. The carbon particles with metal lattice or graphite structures generally exhibit thermal conductivities that are hundreds of times greater than pure fluids. Especially due to their outstanding electric and thermal conductivities, carbon nano tubes and graph ene have become an important entity in the scientific field. Therefore, in this work, experiments are carried out to measure the thermal conductivity via transient hot wire method and the viscosity using a rotary type digital viscometer of carbon nano tubes and graph ene