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The working fluid in refrigerating or heat pump units consists of a zeotropic mixture including the refrigerant (pure or mixture) and a blend of several molecules constituting the lubricant (oil). The analysis of the actual behaviour of the mentioned oil + refrigerant mixture inside each circuit component is rather complicated, since the presence of the lubricant strongly affects the thermophysical properties of the flowing fluid and thus plays a key role in the heat transfer process. The impact of lubricant on both gas-cooling and evaporation processes is reported in this paper, with reference to research work appeared in the open literature.
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Details
- Original title: Effects of lubricant on carbon dioxide heat transfer in transcritical refrigerating cycles.
- Record ID : 2010-0029
- Languages: English
- Source: Latest technologies in refrigeration and air conditioning: energy issues and climate change, new refrigerants, new European regulations, new plants, the cold chain. XIII European Conference: June 12-13, 2009, Milan.
- Publication date: 2009/06/12
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Indexing
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Cycles CO2 transcritiques.
- Author(s) : MEUNIER F.
- Date : 2006/01/18
- Languages : French
- Source: Actualités réglementaires et techniques. Journée française du Froid : recueil des conférences.
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Scroll compressors for R744 (CO2) in refrigerat...
- Author(s) : WINANDY E.
- Date : 2008
- Languages : English
- Source: The Institute of Refrigeration: annual proceedings. Volume 105, 2008-2009.
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CO2 heat pumps: background, status and outlook.
- Author(s) : RIEBERER R., STENE J., NEKSÅ P.
- Date : 2005/11/16
- Languages : English
- Source: DKV-Tagungsbericht 2005, Würzburg./ 2005 Proceedings of the DKV Conference, Würzburg.
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Transcritical carbon dioxide heat rejection opt...
- Author(s) : PEARSON S. F., PEARSON A. B.
- Date : 2006/02/16
- Languages : English
- Source: Innovative Equipment and Systems for Comfort and Food Preservation.
- Formats : PDF
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Transcritical CO2 heat pumping systems.
- Author(s) : STENSTADVOLD K., NEKSÅ P.
- Date : 2005/05/02
- Languages : English
- Source: 8th IEA Heat Pump Conference 2005: global advances in heat pump technology, applications, and markets. Conference proceedings [CD-ROM].
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