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Comuñas MJP, Boned C, Baylaucq A, López ER, Fernández J. Thermodynamic properties of 1,1,1,2-tetrafluoroethane + polyether mixtures up to 60 MPa. CAN J CHEM 2004. [DOI: 10.1139/v04-087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this work we report several derived thermodynamic properties, the isothermal compressibility (κT), the isobaric thermal expansion coefficient (αp), and the internal pressure (π), and their excess functions (κTE, αpE, and πE) for the refrigerant + lubricant mixtures HFC-134a + triethylene glycol dimethyl ether and HFC-134a + tetraethylene glycol dimethyl ether. These properties have been determined in wide temperature (293.15373.15 K) and pressure (1060 MPa) ranges in an effort to better understand the behaviour of these kinds of mixtures and their thermophysical properties as functions of temperature, pressure, and composition. The analysis of the thermodynamic excess properties (negative values for κTE and αpE, positive values for πE) for both systems shows a high degree of interaction between the refrigerant and the synthetic lubricant molecules. Key words: HFC-134a, high pressure, internal pressure, isobaric thermal expansion coefficient, isothermal compressibility, polyglycol ethers, refrigerantlubricant mixtures.
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Domínguez A, Tardajos G, Aicart E, Pérez-Casas S, Trejo LM, Costas M, Patterson D, van Tra H. Van der Waals liquids, Flory theory and mixing functions for chlorobenzene with linear and branched alkanes. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/ft9938900089] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Matilla AD, Tardajos G, Junquera E, Aicart E. Thermodynamic properties for binary liquid mixtures of 1-chlorobutane+n-alkanes. J SOLUTION CHEM 1991. [DOI: 10.1007/bf00675112] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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