The Proceedings of the Symposium on Stirlling Cycle
Online ISSN : 2424-2926
2010.13
Session ID : C02
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C02 Effect of Regenerator Entrance Shape on Performance of Pulse Tube Cryocooler
Noboru OKUYAMAYoshikatsu HIRATSUKADaisuke MAKINOKazuhiro HAMAGUCHI
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
Pulse tube cryocoolers are more attractive than other small cryocoolers because they have no moving parts in the expander and thus have higher reliability. Stirling type pulse tube cryocooler need further improvement, on especially, regenerator. The working gas flow in the regenerator becomes a flow field with non-uniform velocity distribution accompanying the expansion and contraction flow. They cause the excessice pressure loss and reheat loss. We examined the effect of the regenerator entrance shape on the performance of pulse tube cryocooler experimentally. The effect of after-cooler end was bigger than that of cold-head end.
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© 2010 The Japan Society of Mechanical Engineers
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