Table 4
Volume flow rate and its deviation of a long-distance pipeline at different hydrogen blending ratios when the pressures at the start and the end of the pipeline are fixed.
| H2 (%) | 8.4 °C (winter) |
15 °C (average) |
25.2 °C (summer) |
|||
|---|---|---|---|---|---|---|
| Q (107 Nm3/d) | ε (%) | Q (107 Nm3/d) | ε (%) | Q (107 Nm3/d) | ε (%) | |
| 0 | 3.86 | 0.00 | 3.838 | 0.00 | 3.808 | 0.00 |
| 5 | 3.91 | 1.28 | 3.888 | 1.29 | 3.858 | 1.32 |
| 10 | 3.96 | 2.76 | 3.945 | 2.79 | 3.916 | 2.84 |
| 15 | 4.03 | 4.46 | 4.011 | 4.51 | 3.983 | 4.58 |
| 20 | 4.10 | 6.39 | 4.086 | 6.45 | 4.058 | 6.55 |
| 30 | 4.28 | 11.03 | 4.265 | 11.13 | 4.238 | 11.27 |