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Flooded compression in CO2 scroll compressors.

Compresión inundada en compresores scroll de CO2.

Author(s) : BELL I., GROLL E., BRAUN J., et al.

Type of article: Article

Summary

With the recent rediscovery of CO2 as a working fluid, there has been a great interest in optimizing the efficiency of the CO2 cooling cycle. One possible means of improving the CO2 cycle efficiency is to flood the compressor with oil in order to absorb the heat of compression of the vapour refrigerant. In order to gain significant benefit with compressor flooding it is critical to provide regeneration. The addition of oil flooding and regeneration for subcritical operation can increase the system COP by over 20% for source and sink temperatures of -30 and 20°C respectively. For transcritical operation, the increase in COP from flooding and regeneration can be nearly 20% for source and sink temperatures of 5 and 40°C respectively. In addition, results from a detailed model of a CO2 oil-flooded scroll compressor are presented which suggest that a properly designed scroll compressor should be able to handle the large amount of oil necessary.

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Format PDF

Pages: 16-24 (7 p.)

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Details

  • Original title: Compresión inundada en compresores scroll de CO2.
  • Record ID : 30003137
  • Languages: Spanish
  • Source: Frío Calor Aire acondicionado - vol. 39 - n. 439
  • Publication date: 2011/09

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