What is a common cause of combustion inefficiency in boilers?

Inadequate air supply is a common cause of combustion inefficiency in boilers because combustion requires a specific ratio of fuel to air to operate effectively. When there is insufficient air available, the fuel cannot burn completely, leading to unburned fuel and excess carbon monoxide production. This incomplete combustion not only reduces the efficiency of the boiler but can also lead to increased emissions and potentially hazardous conditions within the boiler system.

In a boiler, an optimal mix of fuel and air is vital for achieving the highest efficiency and complete combustion. If the air supply is inadequate, the flames become weak, and the heat produced is insufficient to reach the desired steam output or temperature levels. This scenario can require additional fuel to be used to compensate, exacerbating the efficiency problems.