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。
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。
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