Fig. 1.

Fig. 2.

Energy density comparison of different fuels_
| Fuel | Energy Density [MJ/kg] | Energy Volumetric Density [MJ/liter] |
|---|---|---|
| Hydrogen (Gas at 1 bar) | 120 | 0.1 |
| Hydrogen (Gas at 300 bar) | 120 | 3.03 |
| Hydrogen (Gas at 600 bar) | 120 | 6.06 |
| Hydrogen (Liquid) | 120 | 8.49 |
| Jet-A Fuel | 45 | 34 |
| Gasoline | 44 | 31.5 |
| Diesel | 46 | 35 |
| Ethanol | 28.8 | 20 |