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Oil-free R744 systems for industrial/commercial applications.

Number: pap. ID: 342

Author(s) : HAFNER A., NEKSÅ P., LADAM Y., et al.

Summary

Today’s refrigeration systems have to use a defined portion of oil in order to provide lubrication of mechanical moving parts in the compressors. This oil is mainly added into the compressor but is transported with the working fluid into the system, so a not negligible amount is pumped around in the system. The benefits of oil-free R744 systems compared to conventional system are evaluated for different application like: commercial refrigeration, transport refrigeration, onboard refrigerated sea water (RSW) production and industrial heat pumping systems. In general the installation costs are reduced, due to much simpler oil-free system architecture. The life cycle costs (LCC) of an oil-free system are reduced compared to conventional systems due to a reduction in servicing and maintenance efforts and the improved system performance which leads to more energy efficient operation. The development of a hermetic oil-free compressor is part of the CREATIV project. A pilot compressor is developed, installed in the laboratory in 2011 and will be applied later on in some pilot applications.

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Pages: 8 p.

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Details

  • Original title: Oil-free R744 systems for industrial/commercial applications.
  • Record ID : 30001104
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

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