Massachusetts Oil Burner License Practice Test

What does it mean when the fire impinges on any surface in a combustion chamber?

1. The fire is burning efficiently

2. The fire is touching the walls

3. The heat is effectively being reflected

4. The combustion chamber is properly sealed

The correct answer is: The fire is touching the walls

When the fire impinges on any surface in a combustion chamber, it indicates that the flames or combustion gases are coming into direct contact with the walls or surfaces surrounding the chamber. This contact can lead to inefficient combustion, as the flames are not contained solely in the intended area for optimal burning. Impingement can cause undesirable effects such as localized overheating, increased emissions, and potential damage to the combustion chamber itself. It suggests that the design or operation may not be ideal for maintaining efficient heat exchange and combustion processes. While reflecting heat effectively, ensuring proper sealing, or achieving efficient burning are all important aspects of combustion chamber design, the direct contact of flames with chamber surfaces highlights potential issues that warrant further investigation and remediation.