The atomization of oil in a rotary cup oil burner is primarily achieved through what mechanism?

• A. High-temperature steam
• B. Mechanical agitation
• C. Rotary cup and primary air
• D. Pressure-based atomization

Answer: (C)

In a rotary cup oil burner, the atomization of oil is primarily achieved through the combination of the rotary cup and the primary air. The rotary cup spins at high speeds, creating a centrifugal force that breaks the oil into fine droplets. This mechanical action is crucial for effective atomization. Additionally, primary air is introduced into the system to assist in the atomization process by further dispersing the oil droplets as they exit the cup.

The interplay between the high-speed rotation of the cup and the airflow significantly enhances the combustion efficiency of the oil, leading to better energy output and reduced emissions. This mechanism contrasts with other options, where steam or pressure might be involved but do not specifically align with the operational principle of a rotary cup oil burner.