Relative permittivity measurements of 1,1,1,2-tetrafluoroethane (HFC 134a), pentafluoroethane (HFC 125), and difluoromethane (HFC 32)

被引：26

作者：

Abbott, AP ^{[1
]}

Eardley, CA ^{[1
]}

Tooth, R ^{[1
]}

机构：

[1] Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1999年 / 44卷 / 01期

关键词：

D O I：

10.1021/je980130b

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The relative permittivity of HFC 134a, HFC 32, and HFC 125 was measured as a function of temperature and pressure, to cover the liquid and gaseous states. The temperature range studied was 303 to 403 K, and the pressure range was 4.0 to 30.0 MPa. The relative permittivity, epsilon, could be fitted to the reduced density rho(r) using the function (epsilon - 1)/(2 epsilon + 1). The dipole moment of HFC 134a in the liquid phase has been calculated.

引用

页码：112 / 115

页数：4

共 9 条

[1] Solvent properties of liquid and supercritical 1,1,1,2-tetrafluoroethane [J].

Abbott, AP ;

Eardley, CA .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (43) :8574-8578

[2] DIELECTRIC-CONSTANT, DIELECTRIC VIRIAL-COEFFICIENTS, AND DIPOLE-MOMENTS OF 1,1,1,2-TETRAFLUOROETHANE [J].

BARAO, T ;

DECASTRO, CAN ;

MARDOLCAR, UV ;

OKAMBAWA, R ;

STARNAUD, JM .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1995, 40 (06) :1242-1248

[3] The dielectric polarization of polar liquids [J].

Kirkwood, JG .

JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (10) :911-919

[4] DIPOLE-MOMENTS OF 7 REFRIGERANTS [J].

MEYER, CW ;

MORRISON, G .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1991, 36 (04) :409-413

[5] DIPOLE-MOMENTS OF 7 PARTIALLY HALOGENATED ETHANE REFRIGERANTS [J].

MEYER, CW ;

MORRISON, G .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (09) :3860-3866

[6] Electric moments of molecules in liquids [J].

Onsager, L .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1936, 58 :1486-1493

[7] EQUATIONS OF STATE FOR THE THERMODYNAMIC PROPERTIES OF R32 (DIFLUOROMETHANE) AND R125 (PENTAFLUOROETHANE) [J].

OUTCALT, SL ;

MCLINDEN, MO .

INTERNATIONAL JOURNAL OF THERMOPHYSICS, 1995, 16 (01) :79-89

[8] An international standard equation of state for difluoromethane (R-32) for temperatures from the triple point at 136.34 K to 435 K and pressures up to 70 MPa [J].

TillnerRoth, R ;

Yokozeki, A .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1997, 26 (06) :1273-1328

[9] AN INTERNATIONAL STANDARD FORMULATION FOR THE THERMODYNAMIC PROPERTIES OF 1,1,1,2-TETRAFLUROETHANE (HFC-134A) FOR TEMPERATURES FROM 170-K TO 455-K AND PRESSURES UP TO 70-MPA [J].

TILLNERROTH, R ;

BAEHR, HD .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1994, 23 (05) :657-729

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