On permittivity and density of the systems (tetraglyme+dimethyl or diethyl carbonate) and the formulation of Δε in terms of volume or mole fraction

Effects of external electric field on bubble and charged particle hydrodynamics in a gas–solid fluidized bed

“…There are several models to calculate the mixture relative permittivity in literatures [39][40][41]. Although they are different in expression, they can all be written as the function of solid volume fraction.…”

On permittivity and density of the systems {triglyme+(dimethyl or diethyl carbonate)} and formulation of Δε in terms of volume or mole fraction

“…However, for the systems {tetraglyme + (DMC or DEC)} [6] and for those in this work, the deviation of permittivity is positive over the whole range of concentrations when defined in terms of mole fractions but negative when defined in terms of volume fractions. As was done in [6], the ideal permittivity is calculated in the present work in terms of the mole fractions, as justified in Appendix.…”

“…The packing effect is opposite to that of polarization, it is greater with higher temperature and with longer alkane chains. In order to study the temperature dependence of V E m , values of oV E m oT P ;x were calculated by analytical differentiation of equation (6). Also, the pressure derivative of the molar excess enthalpy was calculated by the following expression:…”

“…This paper is a continuation of the thermodynamic study of mixtures containing (polyoxyethyleneglycol dimethyl ethers (also called glymes) + organic components) [1][2][3][4][5][6] in terms of density, dielectric permittivity, and excess magnitudes. In this work, experimental relative permittivity, e, at a frequency of 1 MHz, and density on mixing, q, of the binary mixtures {2, 5,8,11, tetraoxadodecane or triglyme + dimethyl (DMC) or diethyl carbonate (DEC)} from T = (288.15 to 328.15) K and atmospheric pressure were carried out.…”

On the definition of the excess permittivity of a fluid mixture

“…Most of the authors consider the ideal permittivity to be a sum of the permittivities of the pure components weighted either by the mole [1] or by the volume fractions (see for instance [2,3]). Sometimes they also appear weighted by the weight fractions (for example [4]).…”