Summary
A novel partial admission turbo compressor concept is proposed as an alternative to a conventional radial oil-free CO2 compressor. The concept aims at the improvement of the overall performance through the reduction of the non-stage windage and cooling losses enabled by compression at significantly reduced shaft speeds. Transient CFD analysis gives fairly optimistic prediction of more than 80% of base stage efficiency at around 1.4 total pressure ratio. The study shows potential for efficiency improvement by optimization of the shape and number of blades. The conceptual compressor may be an interesting alternative for commercial CO2 applications operating at close to critical pressures, provided that the deceleration of the gas in the diffuser is efficient.
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Details
- Original title: Novel partial admission radial compressor for CO2 applications.
- Record ID : 30009815
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 8
- Publication date: 2013/12
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Oil-free R744 systems for industrial/commercial...
- Author(s) : HAFNER A., NEKSÅ P., LADAM Y., et al.
- Date : 2012
- Languages : Russian
- Source: Kholodilnaya Tekhnika - n. 11
- Formats : PDF
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Scale limitations of gas bearing supported turb...
- Author(s) : SCHIFFMANN J., KONTOMARIS K., ARPAGAUS C., et al.
- Date : 2020/01
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 109
- Formats : PDF
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Development of one-dimensional model for initia...
- Author(s) : KUS B., NEKSÅ P.
- Date : 2013/12
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 8
- Formats : PDF
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Evaporative cooling system with natural refrige...
- Author(s) : BARROCA P., HAFNER A., PARDINAS A., VERLAAT B., ZWALINSKI L., HULEK W., PETAGNA P., HANF P., BATTISTIN M.
- Date : 2020/12/07
- Languages : English
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Formats : PDF
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Oil free turbo-compressors for CO2 refrigeratio...
- Author(s) : KUS B., NEKSÅ P.
- Date : 2013/08
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 5
- Formats : PDF
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