摘要
采用灌注抽真空微热管制造技术,制备了具有不同真空度的微热管样件组。搭建微热管性能测试平台,对其启动和等温性能进行实验研究。实验结果表明:适当提高启动温度可以使真空度较高的微热管顺利避开声速极限和携带极限,使其成功启动;真空度对微热管启动时间影响不大,启动温度为50℃时,样件组微热管在10s内能成功启动;提高真空度能降低微热管两端温差,优化等温性能;随着蒸发段加热温度的升高,微热管轴向温度分布曲线的转折点向集气段移动。
The sample group of micro heat pipes in different vacuum pressures is made through the manufacturing technology of vacuuming and filling work fluid. In the performance testing platform, the start-up performance and isothermal performance of Micro Heat Pipe （MHP） are studied. The experimental results show the following conclusions：an appropriate increase in start-up temperature can make a smooth start of the MHP in high vacuum pressure for it can avoid the sonic limit and the entrainment lim- it successfully. The vacuum pressure has little effect on the MHP start-up time. With the temperature of 50℃, the sample group can start successfully in 10s. An improvement of vacuum pressure can reduce the temperature difference between two ends of MHP. With increasing of heating temperature in the evaporator section, the turning point of the axial temperature distribution curve of the MHP move to gas-gathering section.
出处
《现代制造工程》
CSCD
北大核心
2013年第1期97-101,共5页
Modern Manufacturing Engineering
基金
广东省自然科学基金青年基金项目(10451064101005146)
关键词
真空度
微热管
启动性能
等温性能
vacuum pressure
micro heat pipe
start-up performance
isothermal performance
