How much combustion air is required to burn one cubic foot of natural gas completely?

The correct amount of combustion air required to completely burn one cubic foot of natural gas is 10 cubic feet. For natural gas combustion, the stoichiometric air-fuel ratio indicates that about 10 cubic feet of air are necessary to completely combust one cubic foot of natural gas. This ratio is derived from the chemical composition of natural gas, which is primarily methane (CH4), and reflects the amount of oxygen needed for the reaction to occur efficiently.

When sufficient air is provided, it ensures that the gas burns cleanly, producing carbon dioxide and water. Insufficient air can lead to incomplete combustion, resulting in the formation of carbon monoxide and other harmful byproducts. Therefore, understanding the correct air requirements is essential for maintaining safe and efficient operation of gas heating systems.