Energy saving opportunities for the boiler (Firing side)

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Energy saving opportunities for the boiler (Firing side)

  1. Preheat combustion air with waste heat (22 C reduction in flue gas temperature increases boiler efficiency by 1%).
  2. Use variable speed drives on large boiler combustion air fans with variable flows.
  3. 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%.)
  4. 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%.)

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Magdy Aly

Energy manager, Energy efficiency consultant Passionate to help others to save Energy and Environment.

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