Result shows that additional compressor work is needed due to the irreversible entropy productions in the rotary valve thereby decrease the COP of GM type PTC.
结果发现，由于气体在旋转阀中的不可逆损失，使得压缩机功耗增大，降低了GM型脉冲管制冷机的COP。
A compressor together with rotary valve system generates pressure oscillation in a GM-type pulse tube refrigerator.
GM型低温制冷机的压力波发生系统通常包括压缩机和平面旋转阀。
This paper briefly introduces the whole design thought of the new-type vacuum filter and the design and development of some main structure parts: rotary-drum and back-flushing valve.
简要介绍了新型真空过滤机的整体设计思路及其主要结构部件转鼓和反吹阀的设计研制。
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