4. Critical Properties¶
-
class
gasthermo.critical_constants.CriticalConstants(dippr_no: str = None, compound_name: str = None, cas_number: str = None, MW: float = None, P_c: float = None, V_c: float = None, Z_c: float = None, T_c: float = None, w: float = None)[source]¶ Get critical constants of a compound
If critical constants are not passed in, reads from DIPPR table
- Parameters
dippr_no (str, optional) – dippr_no of compound by DIPPR table, defaults to None
compound_name (str, optional) – name of chemical compound, defaults to None
cas_number (str, optional) – CAS registry number for chemical compound, defaults to None
MW – molecular weight in g/mol
T_c – critical temperature [K]
P_c – critical pressure [Pa]
V_c – critical molar volume [m^3/mol]
Z_c – critical compressibility factor [dimensionless]
w – accentric factor [dimensionless]
tol (float, hard-coded) – tolerance for percent difference in Zc calulcated and tabulated, set to 0.5