What is the correct air-fuel mixture ratio for complete combustion using natural gas?

The correct air-fuel mixture ratio for complete combustion using natural gas is typically around 1 part fuel to 10 parts air. This ratio is essential for efficient combustion, ensuring that the fuel burns completely and effectively, producing the maximum amount of heat while minimizing the production of harmful emissions. When natural gas combusts completely, its primary byproducts are carbon dioxide and water vapor, which is environmentally favorable.

Maintaining the proper air-fuel ratio is critical in heating applications to optimize efficiency and safety. An incorrect ratio can lead to incomplete combustion, resulting in the formation of carbon monoxide—a potentially dangerous gas—and other pollutants. Therefore, the 1:10 ratio strikes a balance that aids in achieving the best combustion performance for natural gas.