Abstract A single sorption compressor cell that is thermally cycled provides an intermittent flow. For a Joule-Thomson expansion stage, a more or less continuous flow is required. The standard method to obtain a continuous flow out of a sorption compressor is to use three or more compressor cells that are operated out of phase. This paper presents an alternative compressor concept that uses only one compressor cell, two buffer volumes and two check valves. Such a compressor is easier to construct and to operate and has a higher reliability at the expense of a slight variation in the cooler’s cold-end temperature. The principle was demonstrated using a sorption compressor cell that is equipped with a gas-gap heat-switch, is filled with Maxsorb activated carbon, and uses xenon as a working fluid. A flow of 0.5 mg/s was achieved with a low pressure of 2.0 bar and a high pressure of 12.6 bar. The compression ratio can be increased by reduction of the void volume and by optimization of the compressor control system.
Improvements in Sorption Compressor Design
Cryocoolers 13 ; 513-522
01.01.2005
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Improvements in Sorption Compressor Design
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