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Thermodynamic Properties of 3,3,3-Trifluoropropene and Polyol Ester Lubricant Mixtures.

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Title: Thermodynamic Properties of 3,3,3-Trifluoropropene and Polyol Ester Lubricant Mixtures.
Authors: Sun, Yanjun1 (AUTHOR) sunyanjun@xjtu.edu.cn, Zheng, Haiqi1 (AUTHOR), Guo, Daoyi1 (AUTHOR), Qin, Gengguang1 (AUTHOR), Xin, Dianbo2 (AUTHOR), Gao, Rongkun2 (AUTHOR), Liu, Xinyi2 (AUTHOR), Gang, Chang3 (AUTHOR), Wang, Xiaopo4 (AUTHOR), He, Maogang4 (AUTHOR)
Source: International Journal of Thermophysics. Mar2026, Vol. 47 Issue 3, p1-27. 27p.
Subjects: Solubility, Dynamic viscosity, Thermodynamics, Refrigerants, Phase equilibrium, Synthetic lubricants, Liquid density, Refrigeration & refrigerating machinery
Abstract: This study investigates the thermophysical characteristics of binary mixtures involving the low-global warming potential refrigerant 3,3,3-trifluoropropene (R-1243zf) and two polyol ester (POE) lubricants (RL 32 and RL 68). Experimental measurements of solubility, liquid density, and dynamic viscosity were conducted over a temperature range of 298–353 K. These outcomes imply that R-1243zf exhibits complete miscibility with both POE oils across the studied conditions, with higher solubility observed in POE RL 32 compared to POE RL 68. The dissolution of R-1243zf significantly reduces the flow characteristics of the lubricants, particularly in the oil-rich phase, while its effect on liquid density is relatively minor. A satisfactory correlation of the phase equilibrium data was achieved with the non-random two-liquid model, and mixture densities and viscosities were accurately represented using an excess-property approach combined with Redlich–Kister expansions. Additionally, Daniel charts were constructed to illustrate the viscosity–pressure–temperature–concentration relationships for both mixtures, providing practical guidance for the selection of lubricating oils in R-1243zf-based refrigeration systems. The findings suggest that POE RL 68 offers better viscosity retention under high-temperature conditions, making it more suitable for severe operating environments. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Thermophysics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 192431095
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  Label: Title
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  Data: Thermodynamic Properties of 3,3,3-Trifluoropropene and Polyol Ester Lubricant Mixtures.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Sun%2C+Yanjun%22">Sun, Yanjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sunyanjun@xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zheng%2C+Haiqi%22">Zheng, Haiqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guo%2C+Daoyi%22">Guo, Daoyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qin%2C+Gengguang%22">Qin, Gengguang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xin%2C+Dianbo%22">Xin, Dianbo</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Rongkun%22">Gao, Rongkun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Xinyi%22">Liu, Xinyi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gang%2C+Chang%22">Gang, Chang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xiaopo%22">Wang, Xiaopo</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Maogang%22">He, Maogang</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Thermophysics%22">International Journal of Thermophysics</searchLink>. Mar2026, Vol. 47 Issue 3, p1-27. 27p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Solubility%22">Solubility</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamic+viscosity%22">Dynamic viscosity</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamics%22">Thermodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Refrigerants%22">Refrigerants</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+equilibrium%22">Phase equilibrium</searchLink><br /><searchLink fieldCode="DE" term="%22Synthetic+lubricants%22">Synthetic lubricants</searchLink><br /><searchLink fieldCode="DE" term="%22Liquid+density%22">Liquid density</searchLink><br /><searchLink fieldCode="DE" term="%22Refrigeration+%26+refrigerating+machinery%22">Refrigeration & refrigerating machinery</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates the thermophysical characteristics of binary mixtures involving the low-global warming potential refrigerant 3,3,3-trifluoropropene (R-1243zf) and two polyol ester (POE) lubricants (RL 32 and RL 68). Experimental measurements of solubility, liquid density, and dynamic viscosity were conducted over a temperature range of 298–353 K. These outcomes imply that R-1243zf exhibits complete miscibility with both POE oils across the studied conditions, with higher solubility observed in POE RL 32 compared to POE RL 68. The dissolution of R-1243zf significantly reduces the flow characteristics of the lubricants, particularly in the oil-rich phase, while its effect on liquid density is relatively minor. A satisfactory correlation of the phase equilibrium data was achieved with the non-random two-liquid model, and mixture densities and viscosities were accurately represented using an excess-property approach combined with Redlich–Kister expansions. Additionally, Daniel charts were constructed to illustrate the viscosity–pressure–temperature–concentration relationships for both mixtures, providing practical guidance for the selection of lubricating oils in R-1243zf-based refrigeration systems. The findings suggest that POE RL 68 offers better viscosity retention under high-temperature conditions, making it more suitable for severe operating environments. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Thermophysics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10765-026-03708-8
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      – Code: eng
        Text: English
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        PageCount: 27
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    Subjects:
      – SubjectFull: Solubility
        Type: general
      – SubjectFull: Dynamic viscosity
        Type: general
      – SubjectFull: Thermodynamics
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      – SubjectFull: Refrigerants
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      – SubjectFull: Phase equilibrium
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      – SubjectFull: Synthetic lubricants
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      – SubjectFull: Liquid density
        Type: general
      – SubjectFull: Refrigeration & refrigerating machinery
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      – TitleFull: Thermodynamic Properties of 3,3,3-Trifluoropropene and Polyol Ester Lubricant Mixtures.
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              Text: Mar2026
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