Abstract
This work was carried out in order to study the possibility of applying nanofluid for nuclear reactor coolant. Nanofluid is a mixture of fluid and nanoparticle forming a stable suspension. Here ZrO2 nanoparticle or nanopowder was synthesized using solgel method from ZrOCl2·8H2O (ZOC) utilizing sucrose as a chelating agent. The powder of ZOC was derived from local zircon using caustic fusion method. Data of X-ray diffraction (XRD) showed that the nanoparticler contains one phase of monoclinic with crystallite size of 14 nm. Transmission electron microscope (TEM) data showed that the particle size was about 25 nm. It was known that the produced nanofluids were stable until 20 days observation. Zeta potential of the nanofluid was 53 mV. According to the PSA data the average particle size of a typical nanofluid was 66 nm. Thermal conductivity of a typical nanofluid with concentration of ZrO2 of 1 weight% was 5.5% larger than that of water.
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