Vuilleumier Cycle Cryogenic Refrigeration

Abstract
This report describes in detailed the Vuilleumier (V-M) refrigeration cycle and various ways it has been applied to produce cryogenic temperatures. It starts with the most theoretical model of the Vuilleumier cycle and gradually adds complicating factors such as void volumes and undesirable heat losses until a real refrigerator is described. Included, are the factors and component characteristics that influence the refrigeration capacity, efficiency, and life of Vuilleumier refrigeration systems. The various ways different designers have mechanized this cycle in their quest for long life are discussed.

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