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Experimental Study of the Connecting Tube at the Cold End in a U-Shaped Pulse Tube Cyocooler
Pages: 724-727
Year: Issue:  4
Journal: Journal of Engineering Thermophysics

Keyword:  connecting tubeU-shape pulse tube cryocoolerflow straightener;
Abstract: A U-shaped pulse tube cryocooler was designed to study the influence of connecting tube at the cold end.The flow straighteners between the connecting tube and the pulse tube were first investigated to avoid the jet flow in the pulse tube.Then,the diameter of the connecting tube was optimized.There is an optimum diameter for the connecting tube to obtain the best performance.Compared to an in-line one,the efficiency of a typical U-shaped pulse tube cryocooler is about 18% lower.
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