Development of a Diaphragm Stirling Cryocooler

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aut.researcherGschwendtner, Michael
dc.contributor.authorCaughley, A
dc.contributor.authorSellier, M
dc.contributor.authorTucker, A
dc.contributor.authorGschwendtner, M
dc.date.accessioned2017-02-23T23:12:04Z
dc.date.available2017-02-23T23:12:04Z
dc.date.copyright2014-10-17
dc.date.issued2014-10-17
dc.description.abstractCallaghan Innovation, formerly Industrial Research Ltd, has developed a novel free-piston Stirling cryocooler concept using metal diaphragms. The concept uses a pair of metal diaphragms to seal and suspend the displacer of a free-piston Stirling cryocooler. The diaphragms allow the displacer to move without rubbing or moving seals, thus resulting in a long-life mechanism. When coupled to a metal diaphragm pressure wave generator, the system produces a complete Stirling cryocooler with no rubbing parts in the working gas space. Initial modeling of this concept using the Sage modelling tool indicates the potential for a useful cryocooler. A proof-of-concept prototype was constructed and achieved cryogenic temperatures. CFD modeling of the heat transfer in the radial flow fields created by the diaphragms shows the possibility of utilizing the flat geometry for heat transfer, reducing the need for, and the size of, expensive heat exchangers. A second prototype has been designed and constructed using the experience gained from the first. Further CFD modeling has been used to understand the underlying fluid-dynamic and heat transfer mechanisms and refine the Sage1 model. The prototype produces 29 W of cooling at 77 K and reaches a no-load temperature of 56 K. This paper presents details of the development, modeling and testing of the second iteration prototype.
dc.identifier.citation18th International Cryocooler Conference , Syracuse, New York, USA, 2014-06-09 to 2014-06-12, published in: Proceedings of the 18th International Cryocooler Conference
dc.identifier.urihttps://hdl.handle.net/10292/10340
dc.publisherInternational Cryocooler Conference
dc.relation.urihttp://cryocooler.org/proceedings/ICC-18-proceedings/Cryocoolers18.htm
dc.rightsProviding that the ICC copyright is acknowledged, authors and individual users of this web site are permitted to make fair use of the material on it. Limited numbers of the Cryocoolers book PDF files comtained on this web site may be freely copied, emailed, or posted on electronic media such as institutional intranets or external internet pages. However, copying or reproduction of more than fifty files in print or digital form for sale or mass distribution is prohibited without written permission from the International Cryocooler Conference.
dc.rights.accessrightsOpenAccess
dc.titleDevelopment of a Diaphragm Stirling Cryocooler
dc.typeConference Contribution
pubs.elements-id173663
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Design & Creative Technologies
pubs.organisational-data/AUT/Design & Creative Technologies/School of Engineering
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