Thermal
Boiler efficiency
Calculates indicative efficiency as useful heat output divided by fuel energy input.
Related calculators
Fuel consumption from heat output
Calculates fuel mass needed for a given heat output, efficiency, and LHV.
Fuel energy from mass and LHV
Calculates fuel chemical energy from mass and user-provided lower heating value.
Thermal efficiency
Calculates thermal efficiency as useful work output divided by heat input.
Fuel mass from required heat
Calculates fuel mass from required useful heat, LHV, and efficiency provided by the user.
Air required from air-fuel ratio
Calculates air mass from user-provided air-fuel ratio and fuel mass.
Excess air percentage
Calculates excess air percentage from actual and theoretical air mass.