Abstract
In this study, the thermo physical properties of the nanofluid obtained with prepared solution by adding as basic fluid 1.3% the diatomite nanoparticles into water were determined. Many researchers are working to improve the performance of heat transfer fluids. One of the methods used, if we want to increase the overall thermal conductivity of the fluid, the high thermal conductive materials such as metal oxides, metals and carbon should be added to heat transfer fluids as nano‐sized particles. In this study, specific heat capacity, thermal conductivity and viscosity of nanofluid obtained with diatomite nanoparticles in order to increase the fluid's thermal performance and not found in the literature were investigated experimentally.
Highlights
Nanofluids, as a kind of new engineering material consisting of nanometer‐sized additives and base fluids, have attracted great attention of investigators for its superior thermal properties and many potential applications
In order to make comparison with experimental results reported in the literature for testing the accuracy of thermal conductivity experiments were performed for pure water
As a result of the conducted experiments, the diatomite nanofluid in terms of thermal conductivity compared to pure water has been found to perform better
Summary
Nanofluids, as a kind of new engineering material consisting of nanometer‐sized additives and base fluids, have attracted great attention of investigators for its superior thermal properties and many potential applications. There are several methods to improve the heat transfer efficiency These methods are increasing the surface area, improving the thermal conductivity and increasing the temperature between the two situations. Increasing the thermal conductivity is one of the most commonly applied method and different fluids are used for this. The thermal conductivity of the fluids is very low, when compared to solid. The idea of putting high conductivity nano‐sized solid particles into fluid for improving the thermal conductivity is one of the subjects studied for many years [1]. Compared to conventional solid–liquid suspensions for heat transfer condensations, nanofluids dominates the following benefits. High specific surface area and more heat transfer surface between particles and fluids. Adjustable properties, including thermal conductivity and surface wettability, by varying particle concentrations to süit different applications [3]. Maxwell was the first presenter of a theoretical basis to predict a suspensions effective conductivity about 143 years ago and his theory was applied from millimeter to micrometer sized particles suspensions, but Choi and Eastman have presented the novel concept of nanofluids by applying the unique properties of nanofluids at the annual Mechanical
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