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Migration Characteristic of Spherical Nanoparticles from Liquid to Vapor Phase during Refrigerant/Nanolubricant Mixture Boiling
Authors
丁国良
庄大伟
彭浩
胡海涛
Publication date
28 May 2012
Publisher
Abstract
为了评估纳米制冷剂的沸腾传热效果以及球形纳米颗粒在制冷系统中的循环能力,采用称重法实验研究了纳米制冷剂沸腾中气/液相间球形纳米颗粒的迁移特性,重点考察球形纳米颗粒种类和粒径、制冷剂种类、润滑油浓度、热流密度和初始液位高度对球形纳米颗粒迁移特性的影响.结果表明:球形纳米颗粒迁移率随球形纳米颗粒密度或粒径的减小而增大;制冷剂的动力学黏度越小、密度越大,其在完全蒸发时的球形纳米颗粒的迁移率越大;球形纳米颗粒的迁移率随润滑油浓度的增大而减小,随热流密度的增大而减小,随初始液位高度的增加而增大
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018