IIR document
Comparative analysis of R134a subcritical cycle vs CO2 transcritical cycle: numerical study and experimental comparison.
Author(s) : RIGOLA J., RAUSH G., ABLANQUE N., et al.
Summary
The article is a numerical and experimental comparative study of the whole refrigerating cycle in general, and the hermetic reciprocating compressors in particular, between an R134a conventional refrigerating cycle and a carbon dioxide transcritical refrigerating system. The comparative case presented has been specially designed for small cooling capacities and an evaporation temperature around 0 °C. A detailed numerical simulation model for hermetic reciprocating compressors performance has been used to numerically compare both a conventional R134a hermetic compressor and a first carbon dioxide compressor prototype. In order to validate this laboratory setup, a detailed numerical simulation of the thermal and fluid-dynamic behaviour of a single-stage vapour compression refrigerating unit has been developed and used. The numerical and experimental results obtained show a good agreement, while the comparative global values show very similar efficiencies under the same working conditions.
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Details
- Original title: Comparative analysis of R134a subcritical cycle vs CO2 transcritical cycle: numerical study and experimental comparison.
- Record ID : 2005-1796
- Languages: English
- Source: Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
- Publication date: 2004/08/01
Links
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Indexing
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Themes:
Compressors;
HFCs;
CO2 - Keywords: R134a; Comparison; Performance; Modelling; Expérimentation; Transcritical cycle; COP; Refrigerant; Hermetic compressor; CO2
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Numerical analysis and experimental validation ...
- Author(s) : RIGOLA J., RAUSH G., PÉREZ-SEGARRA C. D., et al.
- Date : 2006/05/29
- Languages : English
- Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
- Formats : PDF
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Considerations on transcritical CO2 systems wit...
- Author(s) : TIEDEMANN T., SÜSS J., VEJE C.
- Date : 2004/09/01
- Languages : English
- Source: Compressors 2004: 5th International Conference on Compressors and Coolants
- Formats : PDF
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- Author(s) : APREA C., MAIORINO A.
- Date : 2009
- Languages : English
- Source: Int. J. Energy Res. - vol. 33 - n. 12
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Characterization of the reciprocating compresso...
- Author(s) : HMEL'NÛK M., VOZNY V., MAZUR V.
- Date : 2004/09/01
- Languages : English
- Source: Compressors 2004: 5th International Conference on Compressors and Coolants
- Formats : PDF
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Numerical study and experimental comparison of ...
- Author(s) : PRODAN M. M.
- Date : 2001/09/26
- Languages : English
- Source: Compressors 2001: 4th international conference on compressors and coolants. The almanac of proceedings of the conference.
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