$J_i$	Partial flux $\left[\mathrm{k}\mathrm{g}/\left({\mathrm{m}}^2\mathrm{h}\right)\right]$
${\overline{D}}_i$	Transport coefficient of component i $\left[kmol/\left(m^{2}h\right)\right]$
Q0	Permeability coefficient of the porous support layer of the membrane $\left[kmol/\left(m^{2}hbar\right)\right]$
$p_{i0}$	Pure i component vapour pressure [bar]
$p_{i1}$	Partial pressure of component i on the vapor phase membrane side [bar]
$p_{i3}$	Partial pressure of component $i$. on the vapour phase membrane side [bar]
${\overline{\gamma }}_i$	Average activity coefficient of component i
$x_{i1}$	Concentration of component i in the feed [m⁄(m%)]
$E_i$	Activation energy of component $i$. in Equation (1) for temperature dependence of the transport coefficient $\left[\mathrm{k}\mathrm{J}/\mathrm{m}\mathrm{o}\mathrm{l}\right]$
B	Constant in pervaporation model [-]