Résumé
This study documents the actual performance of a large plant operating with R-744 (CO2) refrigerant and compares these results with those found on an alternative system using a more conventional refrigerant. These tests were conducted with a controlled test environment where one of two alternative refrigeration systems were used to cool a full-sized cold store. Both systems are rated at 72 kW cooling capacity at -31°C SST/35°C ambient. The first system is a single stage R-404A system and the second is a R-744/R-404A cascade system operate at the same room and ambient conditions. They have been running, week on week off for some time to enable an accurate comparison can be drawn. This study also examines the equipment, installation and operational costs for a CO2 driven plant and provides observations on system performance, service and maintenance issues.
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Détails
- Titre original : Carbon dioxide for use as a refrigerant.
- Identifiant de la fiche : 2007-0521
- Langues : Anglais
- Source : Innovative Equipment and Systems for Comfort and Food Preservation.
- Date d'édition : 16/02/2006
Liens
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Indexation
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Thèmes :
Systèmes à compression;
CO2;
Mélanges - Mots-clés : Système frigorifique; Consommation d'énergie; Comparaison; Chambre froide; R404A; Performance; Système en cascade; Congélation; Frigorigène; CO2
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Practical comparison of performance between CO2...
- Auteurs : JAPP A., WILSON I.
- Date : 21/05/2006
- Langues : Anglais
- Source : ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
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Energy comparisons between CO2 cascade systems ...
- Auteurs : KNUDSEN H. J. H., PACHAI A. C.
- Date : 01/08/2004
- Langues : Anglais
- Source : Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
- Formats : PDF
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Performance testing and comparison of liquid ov...
- Auteurs : REES B., ROHRER C., SHAPIRO D., et al.
- Date : 21/08/2007
- Langues : Anglais
- Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Energy consumption comparison of NH3/CO2 and am...
- Auteurs : LAMB R.
- Date : 25/02/2008
- Langues : Anglais
- Source : 11th European Cold Chain Education Program. Presentations [CD-ROM].
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Cascade systems: past, present, and future.
- Auteurs : BANSAL P. K., JAIN S.
- Date : 27/01/2007
- Langues : Anglais
- Source : ASHRAE Transactions. 2007 Winter Meeting. Volume 113, part 1 + CD-ROM.
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