Intermittent Combustion and Boiler Efficiency

Efficiency reduction due to intermittent boiler operation

Intermittent Combustion and Boiler Efficiency

Boiler combustion efficiency is reduced by intermittent operation due to:

  • Energy loss in the flue gas - either by unburned fuel with the excess of fuel or by heating more air than necessary with the excess of air
  • Radiation and convection loss from the exterior surface of the boiler

Energy loss due to radiation and convection increases with intermittent operation and reduced combustion time.

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Inputs

Results

Daily Operating Fraction--
Daily Standby Fraction--
Effective Standby Loss-- %
Intermittent Operation Efficiency-- %
Efficiency Reduction-- %