Study on a fast loading high vacuum multilayer insulation (MLI)

With the continuous development of vacuum technology, the proportion of high vacuum multilayer insulation method in all kinds of insulation methods is growing [1]. For large cryogenic tanks, the multilayer insulation traditional layer by layer winding way is very inconvenient and takes a lot of time. Different layer density of the multilayer insulation material leads to different thermal insulation performance [2]. Because of the influence of man-made factors, the traditional way of winding is difficult to achieve a consistent density. This paper compared the fast loading type insulation and traditional insulation in a different degree of vacuum, it can be seen that the apparent thermal conductivity of these two types is similar. But fast loading multilayer insulation material is more convenient on the installation and it can eliminate the man-made factors. So it has practical value in engineering applications.