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Performance analysis of a CO2/NH3 cascade refrigeration system with subcooling for low temperature freezing applicationsAnalyse des performances d'un système frigorifique en cascade au CO2/NH3 avec sous-refroidissement pour des applications de congélation à basse température

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Title Performance analysis of a CO2/NH3 cascade refrigeration system with subcooling for low temperature freezing applicationsAnalyse des performances d'un système frigorifique en cascade au CO2/NH3 avec sous-refroidissement pour des applications de congélation à basse température
Not Available
 
Creator Vaisak, S.
Prosenjit Singha
Dasgupta, M. S.
Armin Hafner
Kristina Widell
Souvik Bhattacharyya
Saini, S. K.
Arun, B. S.
Manoj P. Samuel
George Ninan
 
Subject cascade refrigeration system impact
subcooling
carbon dioxide
ammonia
total equivalent warming
natural refrigerants
 
Description Not Available
CO2/NH3 cascade refrigeration system is an all-natural refrigeration option which can be specifically designed and gainfully operated for low temperature applications in warm ambient conditions. In the present study, a novel CO2/NH3 cascade refrigeration system with subcooling is proposed and evaluated as an alternative to the HFC-404A refrigeration system, which is typically used for blast freezer applications in the seafood processing industry. The performance of the proposed system is also compared with a conventional CO2/NH3 cascade refrigeration system without any subcooling arrangement. Real compressor specific equations were used to simulate the performance of the systems under various conditions. The proposed system yields 26% higher performance ratio (COP) than the conventional HFC-404A system at the design condition. In addition, the proposed subcooling arrangement enhances COP of the conventional CO2/NH3 cascade unit by around 5%. The system performance is investigated theoretically under various condensing temperatures and subcooling degrees. The annual energy demand and total equivalent warming impact (TEWI) of the proposed system are 15% and 48% lower than for the conventional HFC-404A system which results in significant economic and environmental benefits. Overall, the proposed system exhibits superior energy efficiency and offers a climate and environmental friendly alternative to the conventional environmentally harmful systems within the seafood industry. Adoption of such energy efficient all natural and clean refrigerant technology is crucial for the future phase out of hydrofluorocarbon (HFC) fluids, as ratified in accordance with the Kigali Amendment to the Montreal Protocol in India and other tropical countries.
Not Available
 
Date 2024-04-25T17:14:42Z
2024-04-25T17:14:42Z
2023-09
 
Type Research Paper
 
Identifier Vaisak, S., Prosenjit Singha, Dasgupta, M. S., Armin Hafner, Kristina Widell, Souvik Bhattacharyya, Saini, S. K., Arun, B. S., Manoj P. Samuel and George Ninan (2023) Performance analysis of a CO2/NH3 cascade refrigeration system with subcooling for low temperature freezing applications. Int J Refrig. 153: 140-154.
0140-7007
http://krishi.icar.gov.in/jspui/handle/123456789/82405
 
Language English
 
Relation Not Available;
 
Publisher Elsevier