The Component Data base.

The Component data base is held in a single file called Data6976.This contains all the data published in the standard with additions.

Data6976 is essentially a list of lists for each component of 21 values per component.
For each component the data held is:

FieldDescriptionUnits
Namethe IUPAC component name.
Alias 1an alias used in the Input16 form, keep this to three letters at most.
Alias 2an alias used in the Input17 and output forms, keep this to nine letters at most.
Mol Wtthe molecular weightkg/kgmol
Öb @  0b summation factor at 0C
Öb @ 15b summation factor at 15C
Öb @ 20b summation factor at 20C
z  @  0the compressibility at 0C
z  @ 15the compressibility at 15C
z  @ 20the compressibility at 20C
GHV @  0the Gross Heating Value at 0CMJ/kgmol
GHV @ 15the Gross Heating Value at 15CMJ/kgmol
GHV @ 20the Gross Heating Value at 20CMJ/kgmol
GHV @ 25the Gross Heating Value at 25CMJ/kgmol
LHV @  0the Lower Heating Value at 0CMJ/kgmol
LHV @ 15the Lower Heating Value at 15CMJ/kgmol
LHV @ 20the Lower Heating Value at 20CMJ/kgmol
LHV @ 25the Lower Heating Value at 25CMJ/kgmol
LimitsThe mole percent applicability limits:
  1.  0% ≤ x ≤   5% all except
  2. 50% ≤ x ≤ 100% methane
  3.  0% ≤ x ≤  30% nitrogen
  4.  0% ≤ x ≤  15% carbon dioxide and ethane
  5.  0% ≤ x ≤ 100% pseudo components
Carbon #the number of carbon atoms per molecule
HC?whether the molecule is classed as a hydrocarbon or not.

As distributed the component list is that given in the standard. The additions are iso-pentane, mixed C6, C7+, Inert Air and Typical Gas. These five are pseudo components which I have added. The compositions used to generate these pseudo components are held in the Cache subdirectory.


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