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    • 3. 发明申请
    • STABILIZING NATURAL CIRCULATION SYSTEMS WITH NANO PARTICLES
    • 用纳米颗粒稳定自然循环系统
    • US20110168355A1
    • 2011-07-14
    • US12672090
    • 2007-08-06
    • Arun Kumar NayakManas Ranjan GartiaKrishnan Pallipattu Vijayan
    • Arun Kumar NayakManas Ranjan GartiaKrishnan Pallipattu Vijayan
    • F28D15/00B82Y30/00
    • C09K5/10
    • Natural circulation loop/system adapted to suppress flow instability inherent to fluid medium due to low driving force and non-linearity of the natural circulation process including regenerative feed back between flow rate, driving force and pressure drop by selective metallic oxide nanoparticle base fluid media such as AI2O3 dispersed in water. Advantageously even small amounts of nanoparticles dispersed in water in the natural circulation systems are found to free the loop from undesirable instability ties and importantly also surprisingly enhance the flow rate thereby facilitating avoiding premature critical heat flux, operation and control problems of such natural circulation based heat recovery. The invention thus provides simple and efficient mode of natural circulation heat recovery with flow stability and enhanced flow rate at reduced cost, favouring wide scale application and use of such system for variety of end uses/applications.
    • 自然循环回路/系统适于抑制由于低的驱动力和自然循环过程的非线性导致流体介质固有的流动不稳定性,包括通过选择性金属氧化物纳米颗粒基础流体介质在流速,驱动力和压降之间的再生反馈 因为Al2O3分散在水中。 有利的是,发现分散在自然循环系统中的水中的少量纳米颗粒将循环从不期望的不稳定性关系中释放出来,并且重要地也令人惊奇地增强流速,从而有助于避免过早的临界热通量,这种基于自然循环的热的操作和控制问题 复苏。 因此,本发明提供简单而有效的自然循环热回收模式,具有流动稳定性和降低成本的增加的流速,有利于广泛应用和使用这种系统用于各种最终用途/应用。