Physical Chemistry of Aqueous Systems: Meeting the Needs of Industry

ISBN Print: 978-1-56700-034-4

ISBN Online: 978-1-56700-445-8

THE STATIC DIELECTRIC CONSTANT OF WATER AND STEAM

DOI: 10.1615/ICPWS-1994.150
pages 109-116

Résumé

All relevant static dielectric constant data for water and steam have been collected and evaluated, and will be made available in print and in computerized form. A new formulation of the static dielectric constant or relative permittivity of water and steam has been developed. It is based on the ITS-90 temperature scale, and uses a new fundamental equation for water and steam, likewise based on this scale. It also includes our recently obtained dielectric constant data in liquid water and in saturated steam. The new formulation ranges from - 45 to + 600 °C in temperature, and from 0.1 to 1189 MPa in pressure. It is based on the dipole correlation or g-factor of Alder and Harris, and formulates this factor with 10 adjustable coefficients and associated powers of reduced density and inverse reduced temperature.