Suction adjustment issue
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When using blast furnace gas for heating, the gas inlet at the burner throat may become blocked or partially covered by bricks. With the orifice plates and valves kept at their original settings, it is interesting to know what effect the upward gas pressure has on the measurement values. If this upward gas pressure is adjusted to be the same as the standard value, will the actual value be higher or lower? I would appreciate some guidance from experienced users.
Basically, the impact is minimal and can be ignored. But the viewing hole of that single flue is definitely under negative pressure; it can be cleaned up promptly. The furnace wall can be removed, or bricks can be pushed up to the storage roof using pliers through the viewing hole along an inclined path, and then taken out from there! When the upward airflow adjusts the suction force, by turning on the gas and air supply, the value of the suction force at the roof decreases; it is necessary to increase the suction force! Turning off the gas and turning off the air is the opposite~