precool

A single-stage and high power pulse tube cooler working between 20~40 K has been designed and constructed in order to precool the second stage of a4K separate two-stage pulse tube cooler.

为了满足液氦温区分离型二级脉管第二级预的需要,设计作了1台20～40K温区单级大功脉管。

To fully utilize the low temperature exergy of liquid hydrogen,installed additionally in a hydrogen energy based gas turbine cycle is an air precooler and hydrogen turbine.

为了充分利用液氢的低温火用，在氢轮循环中附加了一个空预器和氢透平。