to simulate a pipeline startup (dynamic simulation with method of characteristics) I need to calculate the Isothermal compressibility of hydrocarbon's condensate,
Prode Properties gives several options based on EOS (Peng-Robinson, Soave Redlich Kwong, CPA) and other methods as BWRS etc.
I have to solve the system for different pressures (from 0 to 120 Bar) and the values of isothermal compressibility are not constant, which is the best option: keep the value of isothermal compressibility fixed or input a table of values ?
The composition doesn't change when operating at pressures above 10 Bar while a little amount evaporates at low pressure, however the value of isothermal compressibility shows only a limited variation at low pressure.