Thermodynamic working fluids for Stirling-cycle, reciprocating thermal machines
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United States of America Patent
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Nov 8, 1983
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N/A
app pub date -
Jul 28, 1982
filing date -
Jul 28, 1982
priority date (Note) -
Expired
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Abstract
New thermodynamic working fluids with primary application to Stirling-cycle, reciprocating, thermal machines are disclosed which possess a greater dynamic heat transfer coefficient than either hydrogen or helium and which are both chemically inert and easily liquefied. A novel power level control subsystem based on the thermophysical properties of these fluids is disclosed for use in conjunction with Stirling-cycle machines; this new approach greatly simplifies procedures for changing the mean system working pressure, and thereby the instantaneous power level in such machines, during their operation.
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