What should be regularly checked to maintain combustion efficiency in boilers?

To maintain combustion efficiency in boilers, it is crucial to monitor the air-to-fuel ratio. This ratio is critical because it determines how effectively the fuel burns within the combustion chamber. An optimal air-to-fuel ratio ensures that there is enough air (oxygen) to completely combust the fuel without producing excess carbon monoxide or unburned hydrocarbons. When the ratio is balanced, the burning process is more efficient, resulting in improved energy output and reduced emissions.

If the air-to-fuel ratio is too low, incomplete combustion can occur, leading to the production of undesirable pollutants and a waste of fuel. Conversely, too much air can cool the combustion process, also leading to inefficiencies. Therefore, regularly checking and adjusting the air-to-fuel ratio is essential for maximizing the performance, safety, and cleanliness of boiler operations.

While other factors like fuel type, water level, and condenser temperature are important in overall boiler operation and maintenance, they do not specifically target combustion efficiency in the same direct manner as the air-to-fuel ratio does.