LNG - NCV / Density / Tankage
LNG fuel: energy content, liquid density, and equivalent tank size compared to VLSFO - the tank-sizing step for DF conversions.
LNG mass needed
3,061,224kg
LNG liquid volume
6,802.7m³
VLSFO-equivalent
3,658,537kg
Formula, assumptions, and limits
$$m_{LNG} = \frac{E}{\text{NCV}_{LNG}}, \quad V_{LNG} = \frac{m_{LNG}}{\rho_L}$$
LNG mass per GJ ~20 kg (vs 24 kg VLSFO). Volume roughly 1.7× VLSFO due to low density. Also need BOG handling, cryogenic insulation, IGF Code safety equipment.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $NCV_LNG$ | LNG NCV | MJ/kg | ISO 6976 |
| $\rho_L$ | LNG liquid density | kg/m³ | Klosek-McKinley |
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