Table 5
Outlet pressure and its deviation of a long-distance pipeline at different hydrogen blending ratios when the energy flow rate and the end pressure of the pipeline are fixed.
| H2 (%) | Q (107 Nm3/d) | 8.4 °C (winter) |
15 °C (average) |
25.2°C (summer) |
|||
|---|---|---|---|---|---|---|---|
| pout (MPa) | ε (%) | pout (MPa) | ε (%) | pout (MPa) | ε (%) | ||
| 0 | 3.84 | 9.58 | 0.00 | 9.60 | 0.00 | 9.63 | 0.00 |
| 5 | 3.97 | 9.67 | 0.89 | 9.68 | 0.88 | 9.71 | 0.88 |
| 10 | 4.12 | 9.75 | 1.78 | 9.77 | 1.78 | 9.80 | 1.76 |
| 15 | 4.27 | 9.84 | 2.69 | 9.86 | 2.68 | 9.89 | 2.66 |
| 20 | 4.44 | 9.93 | 3.60 | 9.94 | 3.59 | 9.97 | 3.56 |
| 30 | 4.82 | 10.10 | 5.46 | 10.12 | 5.43 | 10.15 | 5.39 |