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

Journal Article · Thu Dec 31 23:00:00 EST 1998 · Journal of Chemical and Engineering Data

DOI:https://doi.org/10.1021/je980130b· OSTI ID:321152

Abbott, A P; Eardley, C A; Tooth, R ^[1]

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1. Leicester Univ. (United Kingdom). Chemistry Dept.

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}{sub r} using the function ({epsilon} {minus} 1)/(2{epsilon} + 1). The dipole moment of HFC 134 a in the liquid phase has been calculated.

• OSTI ID: 321152
• Journal Information: Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 1 Vol. 44; ISSN JCEAAX; ISSN 0021-9568
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
40 CHEMISTRY
CHLOROFLUOROCARBONS
FLUORINATED ALIPHATIC HYDROCARBONS
MATERIAL SUBSTITUTION
PERMITTIVITY
PRESSURE DEPENDENCE
REFRIGERANTS
TEMPERATURE DEPENDENCE