Free-piston stirling machine for extreme temperatures
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United States of America Patent
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Nov 26, 2013
Grant Date -
Jun 14, 2012
app pub date -
Dec 5, 2011
filing date -
Dec 14, 2010
priority date (Note) -
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Abstract
A free piston Stirling machine including a thermal buffer tube extending from the machine's expansion space and surrounded by its heat rejector and its regenerator, a displacer cylinder extending from the thermal buffer tube to the compression space and surrounded by the heat rejecting heat exchanger, and a displacer that reciprocates within an excursion limit that extends into the regenerator by no more than 20% of the length of the regenerator during normal operation and preferably within excursion limits that are substantially the length of the heat rejector.
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