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Refrigerant conversion of auto-refrigerating cascade (ARC) systems.
Author(s) : MISSIMER D. J.
Type of article: Article, IJR article
Summary
The paper describes converting ARC ultra-low temperature systems from a multicomponent zeotropic working fluid containing CFCs to a CFC-free mixture. The differences between azeotropes, mixtures and blends with minimal glides used in conventional refrigeration systems and the steep glide (wide span) zeotropes required for ARC system operation are compared. The design tools used include the Carnahan-Starling-DeSantis and the Peng-Robinson equations of state and relationships of components based upon Raoult's law. Some comparisons of pre- and post-conversion operating data are presented. A brief history of ARC cycle cooling systems is included.
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Pages: 201-207
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Details
- Original title: Refrigerant conversion of auto-refrigerating cascade (ARC) systems.
- Record ID : 1997-2611
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 3
- Publication date: 1997/05
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Indexing
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Themes:
Refrigerants, secondary refrigerants: general information;
Compression systems;
Low-temperature physics;
Small-scale cryogenic applications, cryocoolers;
Blends - Keywords: Cryotemperature; Design; Compression system; Performance; Optimization; Cascade system; Zeotropic mixture; History; Equation of state; Cryocooler; Cryogenics; Refrigerant
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