Stable Nanofluids for Convective Heat Transfer Applications
作者： Abhinandan Chiney , Vivek Ganvir , Beena Rai , Pradip
DOI: 10.1115/1.4025502
关键词: Nanofluids in solar collectors 、 Thermodynamics 、 Materials science 、 Thermal contact 、 Heat transfer coefficient 、 Chemical engineering 、 Nanofluid 、 Convective heat transfer 、 Heat transfer 、 Thermal conductivity 、 Heat exchanger
摘要: Nanofluids are stable dispersions of ultrafine or nanoscale metallic, metal oxide, ceramic particles in a given base fluid. It is reported that nanofluids register an extraordinarily high level thermal conductivity, and thus possess immense potential improvement heat transfer energy efficiency several industrial applications including vehicular cooling transportation, nuclear reactors, microelectronics. The key issues with are: (i) robust, cost-effective scalable method to produce scale has not yet been developed, (ii) stability established, (iii) meaningful data flow based process do exist. present work attempts address all these three issues. We have developed in-situ technique for preparation by wet-milling the oxide powder fluid, presence suitable dispersant. produced tested under conditions double pipe exchangers. Alumina found show enhancements around 10–60% various fluids flown different conditions. Thermal depend on flow-rate, particle concentration, type material contact surface exchanger. obtained exhibit sustained (>30 months) their remains unaltered heating-cooling cycles.
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