纳米流体在各种热管中的应用综述

摘要

Nanotechnology is widely used in heat transfer devices to improve thermal performance. Nanofluids can be applied in heat pipes to decrease thermal resistance and achieve a higher heat transfer capability. In the present article, a comprehensive literature review is performed on the nanofluids' applications in heat pipes. Based on reviewed studies, nanofluids have a high capacity to boost the thermal behavior of various types of heat pipes such as conventional heat pipes, pulsating heat pipes, and thermosyphons. Besides, it is observed that there must be a selected amount of concentration for the high-performance utilization of nanoparticles; high concentration of nanoparticles causes a higher thermal resistance which is mainly attributed to increment in the dynamic viscosity and the higher possibility of particles' agglomeration. Enhancement in heat transfer performance is the result of increasing in nucleation sites and the intrinsically greater nanofluids' thermal conductivity.%纳米技术被广泛应用于传热装置中,以提高热性能.纳米流体应用于热管中,可降低热管的热阻,提高热管的传热能力.文中,对纳米在流体热管中的应用进行了全面的综述.阐述了纳米流体对传统热管、脉动热管、热虹膜等各种类型热管的热性能的影响.此外,发现了纳米颗粒的高效利用必须有一定的浓度;因动力黏度的增加导致颗粒团聚的可能性越高,高浓度的纳米颗粒会产生较高的热阻.热传递性能的增强是晶核位置的增多和纳米流体本身具有的更大热导率的结果.