Investigation Of Nanometer Heat Superconduct Component

Nanoparticle suspension, which serves as a high-performance media for heat -exchange system should be a new research domain with scientific connotation and practical value. This article explores the rules of how this new media could be consistent with the types of the nanoparticle, the dimension of the particle, the appearance of the particle, and how the preparation techniques works, to supply the scientific solutions and fundamental theories for the practical use, designing and preparation for many kinds of nanoparticle suspension which coupled with the modern high-performance heat-exchange system. The main works covered in this article is that by adding a proper amount of nanoparticles to the heat pipe on the testing bench for the closed two-phase thermosphon, we try to find the relating rules between the intensified heat transfer and nanoparticle within the media. According the results of the experiment, we could draw some very important conclusions with some phenomenon and rules, which haven't been reported. (1) This article introduces a new method to improve the heat transfer: adding a certain number of nanoparticles to thermosphon with water as its working media. Through experiments of the performance of the heat transfer in heating section,we can see that this new method can be easily and conveniently used in the practical project. (2) Compared with the common heat pipe, the heat transfer coefficient is increased by 47～96%, heat flux is increased by 7.6～15% in the range of the experiment, possessing very good startup , and wall temperature reduces 6～8℃. (3) The heat transfer coefficient of the thermosphon increases while the dimension of the particle decreases, and also increases with the increase of the amount of the particle added in at the beginning, but stops increasing while to some extent. By means of heat transfer measurement experiments of closed two-phase thermosphon, combined with the analysis based on microscale heat transfer theory and the physicochemical behaviors of nanoparticles, a novel class of potential heat exchange media, it has been deeply investigated when this high-efficiency heat exchange media has been applied in closed two-phase thermosphon. Scientific and technical approaches and theoretical basis are provided to optimally design high-efficiency nanoparticle suspension and advanced heat exchange systems.