中文摘要：

对水力直径分别为407．2μm（#1）和305．4μm（#2）的硅基梯形截面通道的闭合回路平板振荡热管（FP—CLPHP），以R113为工质进行了一系列实验。微通道热管中可能出现非典型振荡，与典型振荡相比主要区别在于工质返回加热端的驱动力不同。研究了此换热方式的热阻R在不同倾角（0°至90°）不同充液率下（30％至70％），于加热功率2w至10w的变化情况。以相对空管导热热阻下降作为换热性能提升指标，两热管热阻降低分别为16．5℃／W（65．8％）和8．3℃／W（44．3％），且非典型振荡对充液率的适应性比典型振荡更好。重力对换热有明显提升效果，管径增大也可稍微提升换热。水平工况的换热性能较差，呈现的是工质对加热端长周期的间歇性冲刷。

英文摘要：

For two micro silicon-based fiat-plate closed-loop pulsating heat pipes （FP-CLPHP） with trapezoid cross sections whose hydraulic diameters are separately 407.2 μm （#1） and 305.4 μm （#2）, a series of experiments have been conducted with Rl13 as working fluid. The novel fact is that an atypical oscillation is observed, and compared with typical oscillation the main difference lies in the driving force of working fluid flowing back to heating section. The thermal resistance （R） of heat pipes in this oscillating mode has been investigated under different tilt angles （0° to 90°）, different filling ratios （30% to 70%）, and different heating powers （2 W to 10 W）. As a parameter of heat transfer enhancement, the R decrease compared with empty pipes for both #1 and #2 are biggest at 16.5℃/W （65.8%） and 8.3℃/W （44.3%） respectively. Besides, R in the atypical oscillation is weaker in response to different filling ratios. Gravity contributes a lot to performance enhancement; a relatively bigger inner diameter has a positive influence, too. Thermal performance of horizontal condition is reported to be bad, with a flowing pattern of intermittent washing the evaporating section in a long period.