【摘要】 随着纳米技术的飞速发展,研究者逐渐把这一高新技术应用于热能动力领域。提出了在热虹吸管里面添加纳米颗粒。从理论和实验研究了这种热虹吸管蒸发段的工作特性,结果表明,与普通热管相比较,这种新式热管具有很好的启动特性,低的管壁温度,换热系数提高了47%～96%,轴相热流率提高了7.6%～15%,其换热性能随纳米颗粒粒径的减小而提高,随纳米颗粒加入量有所增加,当超过一定量时换热性能反而降低了。这种新的方法简单而且容易应用于工业技术中。更多还原

【Abstract】 With the rapid development of nanometer technology some research workers have gradually applied this high and new technology to the traditional realm of thermal energy and power. The authors have from a theoretical and experimental viewpoint studied the working characteristics of the evaporation section of a thermosiphon, to which nanoparticles have been added. The results of the study indicate that as compared with conventional heat pipes this type of innovative heat pipes features excellent start-up characteristics and low pipe-wall temperature with heat exchange factor being enhanced by 47%～96% and axial heat flux rate by 7.6%～15%. In addition, their heat exchange performance will increase with the decrease in nanoparticle diameter, and will slightly increase with the addition of nanoparticles. However, when the added nanoparticles have exceeded a certain amount, the heat exchange performance will on the contrary experience a degradation. This innovative method can be applied in industrial units easily and simply.更多还原