Keda Holding System / Package Enhanced
LNG Fuel Gas Supply System (FGSS)
Marine LNG fuel gas supply system for newbuild and retrofit dual-fuel vessels, conditioning and delivering LNG to engines with controlled pressure, temperature and flow; for tankers, container ships, LNG carriers and Ro-Ro.
Description
Keda Holding's LNG Fuel Gas Supply System (FGSS) conditions and delivers LNG to dual-fuel engines with precise control of pressure, temperature and flow. It is designed for both newbuilds and retrofits, allowing shipowners to convert vessels to cleaner dual-fuel propulsion.
Key features
- Conditions LNG fuel with controlled pressure, temperature and flow
- For newbuild and retrofit installations
- Supports compliance with IMO NOx and SOx ECA requirements and the global sulphur cap
Fuel context
LNG is described as the mainstream alternative fuel thanks to mature infrastructure; compared with HFO, LNG offers about 28% lower CO₂ per kWh and over 90% SOx reduction, with an LHV of 49.5 MJ/kg versus 40.2 MJ/kg for HFO.
Applications
- Tankers
- Container vessels
- LNG carriers
- Ro-Ro ships
Specifications
| col1 | HFO | LNG (Methane) | Methanol | Ammonia | Hydrogen |
|---|---|---|---|---|---|
| Chemical Composition | CH4 | CH3OH | NH3 | H2 | |
| Boiling Point, deg.C 1bar | 180-360 | -161.5 | 65 | -33 | -253 |
| Density, kg/m³ liquid | 980 | 450 | 790 | 680 | 71 |
| LHV, MJ/kg | 40.2 | 49.5 | 19.9 | 18.6 | 120.2 |
| Flash point, ℃ | >60 | -188 | 11 | 132 | <-150 |
| Low Flashpoint Fuel | No | Yes | Yes | No | Yes |
| Flammable Range, % vol in air | 0.6-7.5% | 5-15% | 6-26% | 15-28% | 4-77% |
| Energy density, MJ/lt | 39.4 | 22.3 | 15.7 | 12.7 | 8.5 |
| Volume comparision HFO | 1 | 1.77 | 2.51 | 3.11 | 4.62 |
| CO2, kg CO2/kWh | 0.55 | 0.4 | 0.49 | 0 | 0 |
| CO2, kg CO2/kWh Reduction (Compared to HFO) | 0% | 28% | 11% | 100% | 100% |
| SOX Reduction (Compared to HFO) | 0% | >90% | >90% | 100% | 100% |
| NOX Reduction (Compared to HFO) | 0% | ~20% | ~10% | SCR | 100% |
| Challenge | •methane escapes •investment cost | •low energy density •corrosive & toxic •production of green methanol | • low energy density • no bunkering • corrosive & toxic •not economical advantage | • no engine •Containment explosive |
More from Keda Holding
Component
Microchannel Heat Exchangers
Fully welded, gasket-free microchannel heat exchangers for marine engines, charge air cooling, LNG/BOG systems and onboard power units; up to 99 MPa and about 1/6 the size and weight of conventional units.
Component
Shell and Tube Heat Exchanger
Shell and tube heat exchangers for HVAC, chemical and marine use, with double-tube flow separation; range includes titanium alloy intercoolers and cupronickel/titanium exchangers for ships and offshore.