What is the function of the tangential slots in an oil nozzle?

The function of tangential slots in an oil nozzle is to create a swirling motion of the oil as it exits the nozzle. This swirling action is crucial for proper combustion in an oil burner system. When the oil is forced through the tangential slots, it is directed in a circular pattern, which helps to mix the oil with air efficiently. This mixing is critical because a well-mixed air-oil mixture enhances the combustion process, leading to more efficient energy output and better overall performance of the burner.

In contrast to creating a straight flow or simply atomizing the oil, the swirling motion facilitates improved atomization by breaking the oil into fine droplets more effectively. This finer mist is essential for achieving the right combustion characteristics, which in turn affects the heat output and emissions from the burner. The tangential design therefore plays a vital role in ensuring that the fuel is optimally prepared for combustion.