环路热管蒸发器的制作与性能测试

Manufacture and performance tests of the loop heat pipe evaporator

研制了羰基镍粉毛细芯,并对其基本性能参数如孔隙度、渗透率以及有效孔径等进行了测试。测试结果表明,该毛细芯孔隙度较大而有效孔径较小,满足研制要求。通过大量实践与尝试,成功解决了环路热管蒸发器制作中的密封与接触两个关键问题,制作出环路热管蒸发器,并搭建环路热管实验台,对蒸发器性能进行了试验测试。结果表明:应用该蒸发器的环路热管能实现可靠的启动,并在热载荷递增测试中表现出良好的工作性能,证实了本文作者提出的蒸发器制作方法的可行性与有效性。

In this paper, a nickel wick was manufactured, and its basic performance such as porosity, permeability and effective pore radius were tested. The test results show that the nickel wick has comparatively large porosity and small effective pore radius, which satisfy the research and development requirements. The two key problems in manufacturing the loop heat pipe evaporator i.e. seal and contact were solved by trial, and the evaporator was manufactured and its performance was tested. The experimental results show that the loop heat pipe can start up reliably, and behave well in the thermal load increment tests, indicating that the manufacture method of the loop heat pipe evaporator proposed in this paper is feasible and valid.