多分支柔性脉动热管实验研究

Abstract

柔性热管在人体热管理和柔性电子器件冷却等领域具有广阔的应用前景，然而现有柔性热管的柔性有限且传热性能无法满足实际需求。本研究根据脉动热管的工作原理，利用丙酮为工质，采用聚四氟乙烯毛细管制作了具有多个传热分支的柔性热管。其每个传热分支都能单独弯折，表现出良好的柔性。同时，该热管还具有优异的传热性能，其等效导热系数高达4333 W·m−1·K−1。因此，该热管有助于推动热管理服装、柔性电子产品散热及低品位热能利用等领域的发展。 Soft heat pipes have many potential applications in the thermal management of the human body and flexible electronic devices. However, the flexibility and heat transfer capability of the current soft heat pipes are limited, which cannot meet the requirements for engineering applications. In this work, according to the working principle of a pulsating heat pipe, a soft multi-branch heat pipe was fabricated by Teflon tubes, where acetone was used as the working fluid. As each heat transfer branch could deform independently, the proposed heat pipe exhibited excellent flexibility. Meanwhile, the proposed heat pipe also has high heat transfer performance with the apparent thermal conductivity being up to 4333 W·m−1·K−1. Therefore, the proposed soft heat pipe can contribute to the development of thermal management garments, cooling of electronic devices, low-grade waste heat recovery.