Speed of sound and phase equilibria for (CO2 + C3H8) mixtures

被引：4

作者：

Lozano-Martin, Daniel ^{[1
]}

Susial, Rodrigo ^{[1
]}

Hernandez, Pedro ^{[1
,2
]}

Fernandez-Vicente, Teresa E. ^{[3
]}

Carmen Martin, M. ^{[1
]}

Segovia, Jose J. ^{[1
]}

机构：

[1] Univ Valladolid, TERMOCAL Res Grp, Res Inst Bioecon, Escuela Ingn Ind, Paseo Cauce 59, Valladolid 47011, Spain

[2] Inst Nacl Tecn Aerosp INTA, Madrid 28850, Spain

[3] Ctr Espanol Metrol CEM, Alfar 2, Madrid 2876, Spain

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2021年 / 158卷

关键词：

Speed of sound; Phase equilibria; Carbon dioxide; Propane; Heat capacities as perfect-gas; Acoustic virial coefficients; Density virial coefficients; VAPOR-LIQUID-EQUILIBRIA; DIOXIDE PLUS PROPANE; 2ND VIRIAL-COEFFICIENT; CARBON-DIOXIDE; THERMODYNAMIC PROPERTIES; SUPERCRITICAL CO2; BINARY-MIXTURES; PRESSURES; TEMPERATURES; EXTRACTION;

D O I：

10.1016/j.jct.2021.106464

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work presents phase envelope and speed of sound data for the (0.60 CO2 + 0.40 C3H8) and (0.80 CO2 + 0.20 C3H8) binary mixtures. Phase equilibria was measured using a cylindrical resonator working in the microwave band whereas an acoustic resonator was used for speed of sound measurements. The experimental results were compared with GERG-2008 equation of state, obtaining average absolute deviations by 0.24% in pressure for phase equilibria data and 0.025% for speed of sound data. Speed of sound values were used to derive perfect-gas heat capacities, acoustic virial coefficients, and second density virial coefficients. In addition, AGA8-DC92 equation of state performance was checked for the results derived from speeds of sound. (C) 2021 Elsevier Ltd.

引用

页数：15

共 64 条

[1] LOW-TEMPERATURE PHASE EQUILIBRIA - CARBON DIOXIDE-PROPANE SYSTEM [J].