Methane-slip-corrected GHG footprint of an LNG DF engine using GWP_20 and GWP_100 factors - reveals the well-to-wake penalty of unburnt CH₄.
Formula
$$ \text{CO}{2,eq} = m{CO_2} + GWP \cdot m_{CH_4} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $m_{CH_4}$ | Unburnt methane | t/yr | slip × fuel |
| $m_{CO_2}$ | CO₂ from fuel combustion | t/yr | C_F × fuel |
Sources
- IPCC AR6 WG1 Chapter 7.
- MEPC.364(79).