Carbon dioxide: secondary coolant or refrigerant for cascade systems?

Dióxido de carbono: refrigerante secundario o refrigerante para sistemas de cascada?

Author(s) : INFANTE FERREIRA C. A., BOUKENS R. A.

Type of article: Article

Summary

Spanish translation of an article presented at an IIR Meeting at Aarhus, Denmark, September 3-6, 1996 (see IIR Bulletin, reference 97-2808). Ammonia is ecologically safe but its application in spaces with a large number of occupants is restricted. For these applications indirect systems are required. Carbon dioxide is ecologically safe too, has acceptable COP values for low temperature applications and is a perfect medium to be used as secondary coolant in low temperature applications. Ammonia-carbon dioxide systems have perspectives to fulfill the criteria superimposed to alternatives. A comparison is made between an ammonia refrigeration system coupled with a conventional secondary refrigerant loop, the same ammonia cycle cascaded with a CO2 cycle at the low operating temperature level and the same ammonia cycle coupled with a secondary CO2 refrigerant loop.

Details

Original title: Dióxido de carbono: refrigerante secundario o refrigerante para sistemas de cascada?
Record ID : 1999-1516
Languages: Spanish
Subject: Environment
Source: Téc. Frio - vol. 47 - n. 500
Publication date: 1998/02
Document available for consultation in the library of the IIR headquarters only.

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Indexing

Themes: Compression systems;
Ammonia;
CO2;
Indirect refrigeration systems;
Liquid secondary refrigerants
Keywords: Two-phase heat carrier; Refrigerating system; Calculation; Ammonia; Compression system; Simulation; Performance; Cascade system; Modelling; Refrigerating plant; Environment; Refrigerant; Secondary refrigerant; CO2