论文部分内容阅读
本文对不同工况下闭式振荡热管内工质流动状态及其传热性能进行了实验研究,分析了流动状态、加热功率及倾斜角之间的相互影响关系.结果表明,随着加热功率的升高及倾斜角在0°～90°范围内的增大,管内工质循环流动趋势增强,热管的热阻减小,工质的充液量限制了高功率时热管性能的进一步提高;冷热端温差随加热功率的升高呈上升-下降-再上升的变化规律,90°和70°倾角下冷热端温差的最低值所对应的加热功率分别为100 W及125 W。
In this paper, the working fluid flow and its heat transfer performance in closed-loop oscillating heat pipe under different operating conditions are studied experimentally, and the interaction between flow state, heating power and tilt angle is analyzed.The results show that with the increase of heating power Increase and tilt angle increase in the range of 0 ° ~ 90 °, the trend of the circulating flow of working fluid in the pipe is strengthened, the heat resistance of the heat pipe is reduced, and the filling amount of the working fluid limits the further improvement of the heat pipe performance under high power; The temperature difference of hot end increases, decreases and then increases with the increase of heating power. The heating power corresponding to the lowest temperature difference between hot and cold ends at 90 ° and 70 ° inclination is 100 W and 125 W, respectively.