Energy content hydrogen at various conditions
| Pressure | kWh/m3 | Compared to gasoline (%) |
|---|---|---|
| Atmospheric | 3 | 0,03 |
| 200 bar | 592 | 6,51 |
| 350 bar | 1036 | 11,38 |
| 500 bar | 1480 | 16,26 |
| 750 bar | 2220 | 24,4 |
Hydrogen storage comparison
| Tecnology | Volume (L) | Weight (kg) | Density (%H 2 by weigth) |
|---|---|---|---|
| 35 MPa (350 bar) compressed H2 | 145 | 45 | 6,7 |
| 70 MPa (700 bar) compressed H2 | 100 | 50 | 6,0 |
| Cryogenic liquid H2 | 90 | 40 | 7,5 |
| Low-temperature metal hydride | 55 | 215 | 1,4 |