Experimental study of a novel heat sink for distribution level static synchronous compensator cooling  

作　　者：CHEN Hao LI Qiang 

机构地区：[1]MIIT Key Laboratory of Thermal Control of Electronic Equipment,School of Energy and Power Einginering,Nanjing University of Sciene&Technology,Nanjing 210094,China

出　　处：《Science China(Technological Sciences)》2020年第9期1764-1775,共12页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51225602)。

摘　　要：In this paper, a novel heat sink which coupling natural convection and phase transition was designed to meet the cooling requirements of distribution level static synchronous compensator(DSTATCOM). The two inclined evaporation substrates can meet the requirements for the parallel operation of DSTATCOM and the working medium R245 fa was driven by gravity and buoyancy in the heat sink. The influence of filling ratio and heating power on the thermal performance of the heat sink was investigated experimentally and theoretically. The experimental results showed that the filling ratio and heating power had a significant influence on the thermal performance of the heat sink. At the ambient temperature of 25℃, the heat sink could start up successfully at different heating power and filling ratio. Meanwhile, the heat sink achieved good heat dissipation performance as the maximum temperature of two evaporation substrates were 60.14℃ and 67.85℃ while the heating power was 3000 Wand the filling ratio was 80%. The heat transfer resistance between two evaporation substrates and condensation substrates were6.6×10^-3℃/W and 1.2×10^-2℃/W at the same working condition. Additionally, the experimental results showed a good agreement with the calculated results.

关 键 词：natural convection phase transition thermal performance maximum temperature heat transfer resistance 

分 类 号：TM761.12[电气工程—电力系统及自动化]