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采用简单的对试件涂多孔层的手段,强化团体与起流氦之间的换热.利用超流氦的热力效应使试件多孔层内部的超流氦建立起压力增量,使液氦过冷,从而获得加压(过冷)超流氦的传热性能,选择了医用多孔细菌过滤片、石膏粉以及石膏矾土混合物为多孔材料,在RhFe和Cu丝上进行了传热实验,强化效果十分明显.
A simple method of applying a porous layer to the test specimen strengthens the heat transfer between the body and the helium flowing off. The effect of superheated helium on the superfluid helium was investigated. The superfluid helium in the porous layer of the test specimen was increased by pressure and the liquid helium was supercooled to obtain the heat transfer performance of pressurized (supercooled) superfluid helium. The medical porous bacteria Filters, gypsum powder and gypsum bauxite mixture as porous materials, heat transfer experiments on RhFe and Cu wire, the strengthening effect is very obvious.