draftcontrol
Draft control refers to the management of the draft, the flow of air or flue gases through a system, to achieve stable combustion, efficient heat transfer, and safe venting. In fireplaces and wood- or coal-fired furnaces, draft is created by the buoyancy of hot gases in the chimney. Excess draft can cause increased fuel consumption and heat loss, while insufficient draft leads to poor combustion and smoke backflow. Draft control devices include manually operated dampers, barometric dampers that regulate pressure differences between indoors and the flue, and automatic or powered dampers and fans that adjust draw in response to sensors or control signals.
Control systems may use simple hysteresis or more advanced feedback loops with draft pressure sensors, combustion
Applications span residential heating appliances, industrial furnaces and boilers, and larger power plant settings where stable