Thermal
Excess air percentage
Calculates excess air percentage from actual and theoretical air mass.
Related calculators
Air required from air-fuel ratio
Calculates air mass from user-provided air-fuel ratio and fuel mass.
Fuel energy from mass and LHV
Calculates fuel chemical energy from mass and user-provided lower heating value.
Simplified CO2 emission from fuel
Simplified CO2 emissions calculator: the result depends on fuel used and the selected emission factor in kg/L.
Boiler efficiency
Calculates indicative efficiency as useful heat output divided by fuel energy input.
Fuel CO2 emission
Simple estimate calculator for CO2 emission from fuel mass and a user-provided emission factor.
Fuel consumption from heat output
Calculates fuel mass needed for a given heat output, efficiency, and LHV.