Red Seal Oil Heat System Technician Practice Exam

What is the primary purpose of an oil burner nozzle?

1. To control fuel flow

2. To atomize the fuel for combustion

3. To maintain pressure in the system

4. To filter impurities from the oil

The correct answer is: To atomize the fuel for combustion

The primary purpose of an oil burner nozzle is to atomize the fuel for combustion. This process is crucial because, in order for the oil to burn efficiently, it needs to be converted into a fine mist or spray. Atomization increases the surface area of the fuel, allowing it to mix more readily with air and facilitating a better combustion process. The correct atomization results in a more complete burn, which not only enhances efficiency but also minimizes emissions and reduces the formation of soot and residue within the combustion chamber. In addition to this, while controlling fuel flow, maintaining pressure, and filtering impurities are important functions within an oil heating system, they are not the primary role of the nozzle. The nozzle's main function focuses specifically on the preparation of the fuel for combustion, which is essential for the effective operation of the entire system.