What are the walls of the combustion chamber made of?

The walls of the combustion chamber are made of insulating firebrick because this material is specifically designed to withstand high temperatures while providing excellent thermal insulation. Insulating firebrick helps maintain the heat within the chamber for efficient combustion, and it protects the structural integrity of the burner by preventing heat from escaping into the surrounding areas. This feature is crucial for maximizing fuel efficiency and ensuring safe operation.

Insulating firebrick's ability to resist heat allows for a highly effective burn, which is essential in oil burning systems. In contrast, other materials like steel may not provide adequate insulation, leading to heat loss and potential safety hazards, while concrete does not have the necessary thermal resistance and could crack under extreme temperatures. Fire-resistant plaster, though useful in certain applications, does not possess the structural durability required for the intense environment of a combustion chamber. Thus, the use of insulating firebrick serves a vital role in the safe and effective operation of oil burners.