Energy saving opportunities for the boiler (Firing side)

  • Preheat combustion air with waste heat (22 C reduction in flue gas temperature increases boiler efficiency by 1%).
  • Use variable speed drives on large boiler combustion air fans with variable flows.
  • Improve oxygen trim control (e.g. — limit excess air to less than 10% on clean fuels). 5% reduction in excess air increases boiler efficiency by 1% or: 1% reduction of residual oxygen in stack gas increases boiler efficiency by 1%.)
  • Inspect for soot* flyash* and slag on the fire side (A 3 mm thick soot deposition on the heat transfer surface can cause an increase in fuel consumption to the tune of 2.5%.)


to see the description video (Arabic and English versions) and download the slide please check the below link

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For more energy saving tips* please visit

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