CFC/HCFC and alternative refrigeration in large retail and transport applications.

Type of article: Periodical article

Summary

An analysis of the food chain from manufacturer, through transport and retail to consumer, lists the refrigerants presently used with possible substitutes for the future. Ammonia is still the main choice for food manufacturers and should remain so. The author suggests that ammonia should be considered also for large retail outlets. Packaged ammonia systems, using small refrigerant volume heat exchangers to limit the charge, could be installed on rooftops where any leakage would disperse quickly. Such units would cool a secondary fluid, a brine, and circulate it to display cabinets, etc. Low temperatures could be served using small local R134a systems discharging condenser heat to the brine circuit. Domestic refrigerators will be served by R134a, though a higher cost is expected due to an increased efficiency requirement. Transport, particularly by road, causes the greatest problem. R134a is not suitable for temperatures below -20 deg C. R22 condensing temperature will be too high in Southern Europe. Zeotropes and blends may prove possible, but another alternative is a more efficient use of liquid nitrogen. D.W.H.

Details

Original title: CFC/HCFC and alternative refrigeration in large retail and transport applications.
Record ID : 1993-3237(idem93-2503)
Languages: English
Source: CIES Environ. Module 1, Brussels - 9 p.; 1 fig.; 1 tabl.; 5 ref.; append.
Publication date: 1993/02/09
Document available for consultation in the library of the IIR headquarters only.

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