What is Air fuel ratio in boiler how you maintain it

Question

Accepted Answer

Air fuel ratio in boiler is the ratio of mass of air to mass of fuel. It is maintained by adjusting the fuel and air flow rates.

Air fuel ratio is critical for efficient combustion and minimizing emissions.
The ideal air fuel ratio for a boiler is typically between 1.5 and 2.5.
To maintain the air fuel ratio, the fuel and air flow rates must be adjusted based on the boiler load and combustion conditions.
Excess air can lead to energy waste and increased emissions, while insufficient air can result in incomplete combustion and the formation of harmful pollutants.
Regular monitoring and adjustment of the air fuel ratio is necessary to ensure optimal boiler performance and compliance with environmental regulations.

Accepted Answer

The air-fuel ratio which is ideal and results in 100% combustion with no harmful unburned hydrocarbon

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