JTHO MODULE
The JTHO program calculates the temperature drop for an adiabatic isenthalpic change of state. This is known as the Joule-Thomson effect. Starting from an initial pressure and temperature the temperature for a given downstream pressure is calculated. Two predefined natural gas mixtures (natural gas H and natural gas L) are available.
| Natural gas compositions in mol %: | |||
| natural gas H | natural gas L | ||
| methane | (CH4) | 85.4 | 82.0 |
| ethane | (C2H6) | 8.0 | 3.3 |
| propane | (C3H8) | 2.9 | 0.6 |
| n-butane | (n-C4H10) | 1.0 | 0.3 |
| nitrogen | (N2) | 0.7 | 12.6 |
| carbon dioxide | (CO2) | 2.0 | 1.2 |