Heat transfer behaviour of Nanofluids

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Nanofluids are stable colloidal suspensions of nanoparticles, nanofibers, or nanocomposites in common base fluids, These nanofluids can possess properties that are substantially different from their parent materials. Study on nanofluids heat transfer is rather a very recent subject. However, it has attracted many researchers because of their promising heat transfer characteristics vis-à-vis water for applications in future nuclear and process industries. In the similar framework, the authors have investigated the pool boiling heat transfer characteristics of Al2O3 Nanofluids. Experiments were carried out to measure the heat transfer coefficient of water and Alumina nanofluid. It was observed that the heat transfer coefficient of nanofluid was found to be higher in single phase convection region whereas in nucleate boiling region, the heat transfer coefficient is found to higher in water. Further, experiments were carried out to determine the critical heat flux of Alumina Nanofluids for concentrations ranging from 0.001 % to 0.5 % by weight. In all the experiments, enhancement in CHF was observed as compared to water. This property of nanofluids certainly highlights the potential application of nanofluids in nuclear industries and need for further investigation

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Journal: TechConnect Briefs
Volume: 2, Nanotechnology 2012: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational (Volume 2)
Published: June 18, 2012
Pages: 349 - 352
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topics: Micro & Bio Fluidics, Lab-on-Chip
ISBN: 978-1-4665-6275-2