A special refrigerating system is built in laboratory of the Institute. In this system a rotary blade compressor and a rotary blade expander are used as elements for lowering the gas temperature. The compressor is a two stage rotary machine with capacity m = 150 kg/h and pressure 0,7 MPa. The expander gives at this pressure a possibility of arriving at - 100°C in the cooling room. The diagram of closed refrigerating system with the use of the rotary compressor and expander is presented in Figure 1. The advantage of this system is its small size, several times smaller than in the system which uses a piston compressor and expander of the same capacity. The first experiments gave the temperature 175 K in the cooling room and further investigations are made.
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机译：特殊的制冷系统是在研究所的实验室内建造的。在该系统中，旋转刀片压缩机和旋转刀片膨胀器用作用于降低气体温度的元件。压缩机是一个两个级旋转机，容量为m = 150 kg / h，压力0.7 mpa。膨胀机在冷却室内达到了 - 100°C的可能性。使用旋转式压缩机和膨胀机的封闭式制冷系统的图如图1所示。该系统的优点是其小尺寸，比使用活塞压缩机和相同容量的延展的系统小于多倍。第一实验在冷却室中产生了温度175k，并进行进一步的研究。
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