Which condition aids in moving ashes away from the burn pot during combustion?

The condition that aids in moving ashes away from the burn pot during combustion is incoming combustion air. The introduction of fresh combustion air into the burn pot is crucial because it helps to create a turbulent airflow that lifts and carries particles, including ashes, away from the burn pot area. This effective movement is essential for maintaining efficient combustion and preventing ash buildup, which can obstruct the airflow and hinder performance.

In addition, incoming combustion air ensures optimal burning conditions by supplying oxygen required for the combustion process, thus enhancing the overall efficiency of the burner. A steady and adequate supply of fresh air is vital for maximizing combustion efficiency and minimizing emissions as well.

Cold air and hot combustion gases have roles in the combustion process but do not directly assist in moving ashes. While exhaust fumes indicate what remains after combustion, they do not contribute to the movement of ash from the burn pot. Therefore, incoming combustion air stands out as the primary factor in facilitating effective ash management during combustion.