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Methods of Improving Boiler Efficiency

With rising fuel prices, industries that use steam boilers for heating or power generation are finding it difficult to operate at peak efficiency. While steam consumption, leakage, and other heat transfer losses can contribute to an overall energy bill, this article focuses on the boiler core. You can also get more information boiler in Australia via

By far, the most common cause of energy inefficiency in boilers can be attributed to the use of excess air during combustion in the burner. If there is more air than required for combustion, the excess air is heated and eventually discharged into the atmosphere. 

However, there are reasons to add a little extra combustion air – to compensate for imperfect conditions in mixing fuel and burner air, changes in air density, "slop" control system, burner maintenance, fuel composition and viscosity changes and imperfect spray control. for steam burners.

Adjusting the fuel to air ratio for combustion can be very tricky. If there is too much fuel compared to air, incomplete combustion will occur. This causes soot deposits in the combustion chamber or even on top of the boiler tubes.

The effect of the formation of soot on the heat transfer surface and the possible explosion of smoke inside the boiler is much worse than the loss of a small amount of energy through the exhaust pipe. For this reason, many boiler operators choose to adjust their burners so that there is little excess air.