Experimental investigations and modeling of Propylene and DME solubility in PAG oil

Matteo Caramaschi*, Jonathan Notturno, Guglielmo Vaccaro, Lorenzo Talluri, Wiebke Meesenburg, Jonas Jensen, Brian Elmegaard, Pascal Tobaly

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This work experimentally investigated the solubility and miscibility of Propylene (R-1270) and Dimethyl Ether (R-E170) in polyalkylene glycol (PAG) oil. The solubility experimental data were used to fit different local composition models from the literature, the Wilson and Heil equations, and the Non-Random Two-Liquid (NRTL) model. A new empirical correlation decreased the average deviation between experiments and the models. Furthermore, the developed correlation was used to compare the solubility of Propylene and Dimethyl Ether (DME) with the solubility of Propane (R-290). At the same conditions, Propane showed the lowest solubility while DME was the highest. The relative difference between the solubility of refrigerants increases at higher pressures. While the solubility values between Propane and Propylene are similar, DME has a discrepant behavior when compared to Propane, reaching a difference in solubility of more than 50 % at a saturation temperature of 60 ◦C.
Original languageEnglish
Title of host publicationProceedings of the 26th IIR International Congress of Refrigeration
PublisherInternational Institute of Refrigeration
Publication date2023
Article number0412
ISBN (Electronic)978-2-36215-056-2
Publication statusPublished - 2023
Event26th International Congress of Refrigeration - Paris Congress Center, Paris, France
Duration: 21 Aug 202325 Aug 2023


Conference26th International Congress of Refrigeration
LocationParis Congress Center
SeriesScience et Technique du Froid


  • Heat pump
  • Compressors
  • Refrigerants
  • Oil
  • Solubility
  • Charge


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