Table 2
Parameters of the long-distance natural gas pipeline.
| Pipeline parameter | Value |
|---|---|
| Size (mm) | Φ = 1016 × 17.5 |
| Transportation capacity (Nm3/a) | 120 × 108 |
| Pipeline length (km) | 183.5 |
| Buried depth (m) | 1.5 |
| Pipeline roughness (μm) | 15 |
| Temperature of the gas source (°C) | 34 |
| Maximum soil temperature at the buried depth (°C) | 25.2 |
| Minimum soil temperature at the buried depth (°C) | 8.4 |
| Annual average soil temperature at the buried depth (°C) | 15.0 |