Linear compressor match cold head in a step piston pulse tube refrigerator
朱 紹偉 （同済大）
Abstract:A step piston pulse tube refrigerator can be considered as a modification of an inertance tube pulse tube refrigerator with a step piston compressor whose step piston generates additional expansion space to connect to the buffer to recover the expansion power. Its theoretical efficiency is same as Cornot efficiency. It could be effective for high cooling power pulse tube refrigerator. The match of the step piston linear compressor and cold head is important for the linear compressor fully power output. A numerical model with step piston type linear compress is made to simulate a step piston pulse tube refrigerator to show how the linear compressor match the could head, which could be a design guide for the refrigerator.