What is the percentage of excess air needed for complete combustion when using a fuel oil burner?

The percentage of excess air required for complete combustion in a fuel oil burner typically falls in the range of 3-15%. This excess air is essential to ensure that all of the fuel is burned completely and to minimize the production of hazardous emissions.

When burning fuel oil, an adequate amount of air must be available to react with the fuel. However, too much air can reduce the combustion efficiency, as it takes away from the heat generated during the burning process. Maintaining a balance in the amount of excess air is crucial for optimal operation, which is why the 3-15% range is generally accepted.

In practical terms, operating a burner with this appropriate level of excess air helps to achieve complete combustion, resulting in more efficient heat production while reducing the emission of pollutants. Efficiency and environmental safety are both enhanced at this range compared to operating with either too little excess air, which could lead to incomplete combustion and hazardous emissions, or too much excess air, which could cool the burner and waste energy.