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Lubrication of refrigeration compressors: present and future. 2.

Lubrification des compresseurs frigorifiques : présent et avenir. 2.

Author(s) : CLAIRÉ J. Y., DELAFARGUE G.

Type of article: Article

Summary

Adequate lubricant selection associated with refrigerant fluid is of utmost Importance for the optimal performances of a compression refrigeration unit. Bearing in mind that several kinds of lubricant chemistries are available today, the authors considered useful to remind in the first article published in June 2014 release of "La RGF" the market about the basics of lubrication of different types of compressors according to their operating conditions, This included the refrigerant fluid in use, either miscible or not miscible with lubricants. In the second article, a rigorous method of lubricant selection for refrigeration compression applications when refrigerant fluid and lubricant in use are miscible is detailed. This method is based on the use of the Viscosity - Pressure -Temperature and miscibility curves. The case for refrigeration units using fluids (Ammonia-R-717) not miscible in lubricant is addressed. Furthermore the specific case of retrofits HCFC towards HFC/HFO is also studied in the document. Despite the development of promising future technologies which do not require refrigeration fluids (e.g. magnetic refrigeration), it is expected that refrigeration compression units using refrigerant fluids in compliance with forthcoming legislations, should remain for a while in the market. Accordingly it would require a full understanding of the key role of the lubricant for trouble-free and optimized operations of the refrigeration units.

Details

  • Original title: Lubrification des compresseurs frigorifiques : présent et avenir. 2.
  • Record ID : 30012074
  • Languages: French
  • Source: Revue générale du Froid & du Conditionnement d'air - vol. 103 - n. 1145
  • Publication date: 2014/07

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