Ammonia Energy Share, Pilot-Fuel Energy Share, Dual-Fuel Efficiency, Voyage Consumption & Storage Volume
Ammonia Dual-Fuel Consumption & Pilot Fuel Tank Sizing Tool
Estimate ammonia and pilot-fuel consumption from engine output energy, brake thermal efficiency and the pilot-energy share you enter. The calculator keeps chemical energy, fuel mass and storage volume separate so a 5% pilot energy share is not mistakenly treated as 5% of fuel mass.
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Need load-by-load pilot share, annual demand, separate fuel properties and day-tank autonomy? Click Advanced above.Advanced lets brake thermal efficiency and pilot energy share change with load. It also separates usable fuel volume from gross tank volume and adds reserve/heel allowances.
Fast Ammonia / Pilot-Fuel Screen
Exactly 10 primary inputs. Simple uses fixed LHVs of 18.6 MJ/kg for ammonia and 42.7 MJ/kg for pilot oil, plus a pilot-oil density assumption of 850 kg/m³. Advanced makes these editable.
kW per engine.
% of rated power.
% mechanical output / fuel LHV input.
% of total chemical fuel energy.
days.
% added to voyage consumption.
kg/m³ at the selected storage condition.
% of gross geometric volume used for this planning screen.
Fuel & Storage Basis
kW per engine.
days.
% added to both fuel consumptions.
% added to propulsion ammonia demand for planning losses/allowance. Not a boil-off prediction.
MJ/kg.
kg/m³ at selected storage condition.
% gross geometric volume.
% of gross tank volume reserved as heel/unusable allowance.
MJ/kg.
kg/m³.
% gross volume.
hours of representative pilot-fuel consumption.
Representative Daily Load / Dual-Fuel Profile
Hours across rows must total no more than 24. Operating-mode names are excluded from Tool Data. Pilot share is entered as chemical-energy fraction, not mass fraction.
| Operating mode | Load % MCR | Hours / day | Brake thermal efficiency % | Pilot energy share % | |
|---|---|---|---|---|---|
Ammonia-Fuel System Readiness
Fuel-consumption / preliminary tank-sizing screen only: this tool does not size an approved ammonia fuel-containment system, determine pressure/temperature design, relief capacity, toxic-release consequences, bunkering rate, fuel-gas supply equipment, ventilation, hazardous zones, ammonia catch/abatement systems, SCR, NOx/N2O control, structural integration or class/flag compliance. Pilot-fuel share and engine efficiency vary by engine rating and load. Use engine-maker guaranteed data and approved tank/fuel-system documentation for design.