Traditional Culture Encyclopedia - Traditional festivals - Why is the temperature rising fast when the furnace is turned on and slow when it is turned off?

Why is the temperature rising fast when the furnace is turned on and slow when it is turned off?

Coal needs oxygen to burn in the furnace. When the furnace is turned on to ensure that a large amount of oxygen in the air enters the furnace, the coal in the furnace will burn rapidly and the temperature will rise rapidly. Turning off the furnace is equivalent to turning off the oxygen channel. The coal almost stopped burning, and the temperature no longer rose, but the coal was still burning and not extinguished. Turning off the furnace will not reduce the temperature quickly.