Why is the ventilation after the boiler is shut down?
Therefore, must be about 40% of the rated air volume, the furnace and flue ventilation 5 ~ 10min.
Resistance, heat transfer, reduce boiler efficiency, and even increase the flow resistance of flue gas.
This is because when the furnace there is combustible material, and from the precipitation of combustible gas, to a certain concentration and temperature can produce deflagration, resulting in a strong impact and damage to the equipment; when there is fouling on the heating surface, it will increase the heat
The purpose of the furnace ventilation is to discharge the flammable gases and substances that may be present in the furnace and in the flue, and to discharge part of the fouling on the heated surface.
