Patent
Stirling cycle engine and refrigeration systems
TLDR
In this article, a Stirling cycle heat engine is described in which displacer motion is controlled as a function of the working fluid pressure P 1 and a substantially constant pressure P 0.Abstract:
A Stirling cycle heat engine is disclosed in which displacer motion is controlled as a function of the working fluid pressure P 1 and a substantially constant pressure P 0 . The heat engine includes an auxiliary chamber at the constant pressure P 0 . An end surface of a displacer piston is disposed in the auxiliary chamber. During the compression portion of the engine cycle when P 1 rises above P 0 the displacer forces the working fluid to pass from the cold chamber to the hot chamber of the engine. During the expansion portion of the engine cycle the heated working fluid in the hot chamber does work by pushing down on the engine's drive piston. As the working fluid pressure P 1 drops below P 0 the displacer forces most of the working fluid in the hot chamber to pass through the regenerator to the cold chamber. The engine is easily combinable with a refrigeration section to provide a refrigeration system in which the engine's single drive piston serves both the engine and the refrigeration section.read more
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Patent
Cold-gas refrigerator
Herre Rinia,Jan Meijer Roelf +1 more
TL;DR: In this paper, a valve for controlling the supply of gas from the expansion chamber of a cold-gas refrigerator is described, in which the pressure varies sinusoidally and comprises a housing 41 connected by a duct 42 to said chamber, and a plug 43 which is screwed into the housing and has a bore 44.
Patent
Decontamination method and apparatus for cryogenic refrigerators
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