FE-ISO20765-2

FE-ISO20765-1

FE-ISO12213-2

FE-ISO12213-3

FE-ISO6976

FE-AGA8-Part2

FE-AGA8-2017-1

FE-AGA8-1992

FE-ISO20765-2, Ver. 1.00 is a program for MS Windows. FE-ISO20765-2 calculates the properties of a natural gas in accordance with International standards ISO 20765-2:2015 and ISO 14912:2003

FE-ISO20765-2 calculates the properties of a natural gas mixture in accordance with:

- ISO-20765-2:2015:
*Natural gas - Calculation of thermodynamic properties -*

Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application - 2. ISO-14912:2003:
*Gas analysis - Conversion of gas mixture composition data*

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-ISO20765-2 software.

select 'Print' from FE-ISO20765-2 'File' menu.

Parameter | Ranges | ||
---|---|---|---|

Range of application (RAP) | R1 | R2 | R3 |

Absolute Pressure in MPa | >0 to 35 | >0 to 70 | >0 to 70 |

Temperature in K | 90 to 450 | 60 to 700 | 60 to 700 |

Mole fractions: | |||

Methane | 0.7 to 1 | 0.3 to 1 | 0 to 1 |

Nitrogen | 0 to 0.2 | 0 to 0.55 | 0 to 1 |

Carbon dioxide | 0 to 0.2 | 0 to 0.3 | 0 to 1 |

Ethane | 0 to 0.1 | 0 to 0.25 | 0 to 1 |

Propane | 0 to 0.035 | 0 to 0.14 | 0 to 1 |

n-Butane+Isobutane | 0 to 0.015 | 0 to 0.06 | 0 to 1 |

n-Pentane+Isopentane | 0 to 0.005 | 0 to 0.005 | 0 to 1 |

n-Hexane | 0 to 0.001 | 0 to 0.002 | 0 to 1 |

n-Heptane | 0 to 0.0005 | 0 to 0.001 | 0 to 1 |

n-Octane+n-Nonane+n-Decane | 0 to 0.0005 | 0 to 0.0005 | 0 to 1 |

Hydrogen | 0 to 0.1 | 0 to 0.40 | 0 to 1 |

Oxigen | 0 to 0.0002 | 0 to 0.02 | 0 to 1 |

Carbon Monoxide | 0 to 0.03 | 0 to 0.13 | 0 to 1 |

Water | 0 to 0.00015 | 0 to 0.0002 | 0 to 1 |

Hydrogen Sulfide | 0 to 0.0002 | 0 to 0.27 | 0 to 1 |

Helium | 0 to 0.005 | 0 to 0.005 | 0 to 1 |

Argon | 0 to 0.0002 | 0 to 0.0005 | 0 to 1 |

The ranges of applications defined by R1 and R2 are completely in accordance with ISO-20765-2:2015.

Mole fraction ranges defined by R3 are not in accordance with ISO-20765-2:2015. It can be used only for software testing purposes, like the examples given in Annex G of ISO-20765-2:2015, which do not satisfy the mole fraction ranges defined by R1 or R2.

In FE-ISO20765-2 a gas mixture analysis may be given in form of:

- Mole fractions

- Mass fractions

- Volume fractions at 100 kPa, 288.15 K

Note that mass or volume fractions may differ significantly from mole

fractions for the same gas mixture.

A sum of fractions of gas components must be between 0.99999 and 1.00001. If mass- or volume-fractions are given they will be internally converted to mole fractions during program execution, according to ISO-14912:2003, which then must satisfy the above mole fractions ranges.

We recommend the use of mole-, rather than mass- or volume-fractions, as the ISO-20765-2:2015 calculation procedures are based on mole-fractions exclusively.

A) Calculation based on: P, T and gas components fractions

B) Calculation based on: density, T and gas components fractions

C) Calculation based on: reduced density, T and gas components fractions

Regardless of the selected calculation method A), B) or C), the following input variables to FE-ISO20765-2 are common to all calculation methods:

- Temperature [K]
- Fractions of natural gas components

- Error status
- Molar mass [kg/kmol]
- Molar density [kmol/m3]
- Compression []
- Molar Gibbs free energy [kJ/kmol]
- Molar internal energy [kJ/kmol]
- Specific internal energy [kJ/kg]
- Molar enthalpy [kJ/kmol]
- Specific enthalpy [kJ/kg]
- Molar entropy [kJ/(kmol⋅K)]
- Specific entropy [kJ/(kg⋅K)]
- Molar isochoric heat capacity [kJ/(kmol⋅K)]
- Specific isochoric heat capacity [kJ/(kg⋅K)]
- Molar isobaric heat capacity [kJ/(kmol⋅K)]
- Specific isobaric heat capacity [kJ/(kg⋅K)]
- Joule-Thomson coefficient [K/MPa]
- Isentropic exponent []
- Speed of sound [m/s]

- Absolute pressure [MPa]
- Density [kg/m3]
- Reduced density []

Before starting the calculation choose the corresponding calculation method, the ranges of application, the type of gas mixture analysis, and enter the input variables.

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-ISO20765-2 as

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