Control methods and means for various parameters and indicators of vertical heating furnaces
Thread Content
I would like to ask those of you who are experienced with vertical heating furnaces: 1. How is the excess air coefficient controlled in a heating furnace? What is the impact of controlling the excess air coefficient on the operation of the entire heating furnace? I have some basic knowledge, but it’s not comprehensive. 2. What is the typical range of opening degree for the flue dampers in your installations? What about the negative pressure value in the furnace? Could you talk about your usual operational experience? 3. I checked, and the material grades of the furnace tubes in our heating furnace are TP347 and TP321. Could those of you who are experts in materials please advise me: what materials are these respectively? By the way, regarding the performance features. For these three questions, those who know even partial answers will definitely be rewarded handsomely! Thanks!
1. The ratio of the actual amount of air required for complete combustion of fuel to the theoretical amount of air is called the excess air coefficient. The excess air coefficient can be indirectly determined using a zirconia air sensor located above the convection chamber of the heating furnace. 2. According to experienced technicians, the negative pressure in the furnace chamber should generally be maintained between -30 pa and -70 pa. The opening degree of the flue dampers is primarily used to regulate the negative pressure in the furnace within this range. 3. That’s just my personal opinion; what about you?