FE-ISO12213-2, Ver. 2.10 is a program for MS Windows. FE-ISO12213-2 calculates compression factor, mass density and molar density of natural gas mixture, at both base and operating conditions, completely in accordance with: ISO 12213-2:2006. It calculates also natural gas supercompressibility factor, gas mixture molar mass, superior calorific value and the relative density at three standard pressure/temperature conditions. FE-ISO12213-2 also complies with with ISO 12213-1:2006 and ISO 6976:1995/Cor 1:1997

FE-ISO12213-2 user interface

FE-ISO12213-2 screenshot

FE-ISO12213-2 ReadMe
Ver. 2.10, Apr 15, 2005

FE-ISO12213-2 calculates the properties of a natural gas mixture completely in accordance with:
  • ISO 12213-2:2006: Natural gas - Calculation of Compression factor -
    Part1: Introduction and guidelines
    Part2: Calculation using molar-composition analysis
  • Starling, K.E., Savidge, J.L.: Compressibility Factors for Natural Gas and Other Hydrocarbon Gases", American Gas Association (AGA) Transmission Measurement Committee Report No. 8, American Petroleum Institute (API) MpMS, chapter 14.2, 2nd edition November 1992, 2nd printing July 1994.
The calculation of relative density, superior calorific value and the conversion of volume and mass fractions into mole fractions are in accordance with:
  • ISO 6976:1995: Natural gas - calculation of calorific values, density, relative density and Wobbe index from composition.
The following are the wider ranges of application for compression factor calculation with the FE-ISO12213-2 (see ISO 12213-2:2005):

Parameter Range of application
Absolute Pressure [MPa] 10-7 to 65 MPa
Temperature [K] 225 to 350 K
Relative Density [] 0.55 to 0.90
Superior Calorific Value [MJ/m3] 20 to 48 MJ/m3
Mole percent ranges:
Methane [%] 50 to 100%
Nitrogen [%] 0 to 50%
Carbon dioxide [%] 0 to 30%
Ethane [%] 0 to 20%
Propane [%] 0 to 5
Water [%] 0 to 0.015%
Hydrogen Sulfide [%] 0 to 0.02%
Hydrogen [%] 0 to 10%
Carbon Monoxide [%] 0 to 3%
Oxigen [%] 0 to 0.02%
i-Butane + n-Butane [%] 0 to 1.5%
i-Pentane + n-Pentane [%] 0 to 0.5%
n-Hexane [%] 0 t0 0.1%
n-Heptane [%] 0 to 0.05%
n-Octane + n-Nonane + n-Decane [%] 0 to 0.05%
Helium [%] 0 to 0.5%
Argon [%] 0 to 0.02%

Download "fe_12213x2.exe", the latest version of self-extracting and self-installing demo program. Run "fe_12213x2.exe" and follow the on-screen instructions. The default folder for installation is C:\Program Files (x86)\FE_ISO12213_2.

Note: The text box for Methane is locked in unregistered version and can not be changed but you can still verify all the possibilities and options of registered FE_ISO12213_2 software.
RUN FE-ISO12213-2
After completing the installation run the program using the 'Start' menu of your task bar or double click the fe_iso12213_2.exe from your Windows Explorer.
To enter the parameter just click on the corresponding textbox and type in the value. Before entering the values for pressure and temperature select the corresponding unit at the right side of the parameter.
Note: In a demo version the Methane fraction textbox can not be changed.
To start the calculation select 'Run' from 'Start' menu of your FE-ISO12213-2 menu bar.
To save the file select 'Save As' from FE-ISO12213-2 'File' menu. The default file extension is '.a92'
To open the existing file select 'Open' from FE-ISO12213-2 'File' menu.
To print the results of the calculation to your system printer select 'Print' from FE-ISO12213-2 'File' menu.
To print the calculation results into ASCII file select 'Print ASCII to File' from FE-ISO12213-2 'File' menu.
FE-ISO12213-2 calculates the parameters of a natural gas mixture at base and operating conditions (pressure & temperature). The range of base and operating pressure varies from 0 MPa to 65 MPa (0 to 650 bar). The range of base and operating temperature varies from 225 K to 350 K (-48.15°C to 76.85°C). You can select the proper unit for pressure (among 24 available units) and for temperature (among 4 available units). The units of output parameters can also be changed. The following parameters are calculated:
  • Compression factor at base conditions
  • Mass density at base conditions
  • Molar density at base conditions
  • Compression factor at operating conditions
  • Mass density at operating conditions
  • Molar density at operating conditions
  • Supercompressibility factor
  • Mixture molar mass
  • Relative density at 0°C and 1.01325 bar
  • Relative density at 15°C and 1.01325 bar
  • Relative density at 20°C and 1.01325 bar
  • Superior calorific value (25°C/0°C/1.01325bar)
From the right side of the parameter select the preferable unit.
To convert your FE-ISO12213-2 demo program into fully functional version you need to buy the corresponding license. After buying the license you will receive email with registration data, which will enable you to unlock your demo and convert it into the fully functional registered version.
To register the program, Run FE-ISO12213-2 as administrator! Select'Register' from 'Help' menu of your FE-ISO12213-2 menu bar and enter data exactly as described in the corresponding e-mail message.
This program is furnished under the license agreement and is protected by copyright law and international treaties.

You can download and try FELIB demonstration programs. Each demo-software is prepared as self-extracting and self-installing program for MS Windows environments.