What type of air is essential for ensuring a complete burn of oil in a combustion system?

In a combustion system, the type of air that is essential for ensuring a complete burn of oil is primary air. Primary air is mixed with the oil before it enters the combustion chamber, where the initial combustion occurs. This air is crucial because it provides the necessary oxygen to allow the fuel to ignite and burn efficiently.

Secondary air, on the other hand, is introduced after the initial combustion and helps to complete the burning process by ensuring any unburned fuel is fully combusted. While secondary air contributes to the overall efficiency and effectiveness of the combustion, it is the primary air that is fundamental for starting the combustion reaction itself.

Tertiary air refers to the additional air supplied in more advanced combustion systems, but it is not primarily responsible for the initial combustion of oil. Excess air is the additional air supplied beyond what is theoretically needed for complete combustion, which can lead to inefficiencies and should be minimized for optimal performance.

Understanding the roles of primary, secondary, tertiary, and excess air is essential for achieving efficient combustion and maintaining a well-functioning heating system.