Why must a heating furnace maintain a certain negative pressure?
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Basic knowledge of fractional distillation operations http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1202057
With positive pressure inside the furnace, it will surely turn into a flamethrower
Fuel needs a certain amount of air to burn; only by maintaining a certain negative pressure, with the pressure inside the furnace being lower than that outside, can air from outside the furnace enter it. If the negative pressure inside the furnace is too low, the amount of air drawn in is minimal, resulting in incomplete combustion of the fuel. This leads to a decrease in the furnace’s thermal efficiency, black smoke being emitted from the chimney, a dim interior of the furnace, and even flames bursting out, which can disrupt the proper operation of the system.
From a safety perspective, positive pressure is unsafe
Positive pressure can cause the flame to spill outward; you are probably referring to an open-type furnace. Some enclosed furnaces are positive-pressure
Fuel needs a certain amount of air to burn; only by maintaining a certain negative pressure, with the pressure inside the furnace being lower than that outside, can air from outside the furnace enter it. If the negative pressure inside the furnace is too low, the amount of air drawn in is minimal, resulting in incomplete combustion of the fuel. This leads to a decrease in the furnace’s thermal efficiency, black smoke being emitted from the chimney, a dim interior of the furnace, and even flames bursting out, which can disrupt the proper operation of the system.
Fuel needs a certain amount of air to burn; only by maintaining a certain negative pressure, with the pressure inside the furnace being lower than that outside, can air from outside the furnace enter it. If the negative pressure inside the furnace is too low, the amount of air drawn in is minimal, resulting in incomplete combustion of the fuel. This leads to a decrease in the furnace’s thermal efficiency, black smoke being emitted from the chimney, a dim interior of the furnace, and even flames bursting out, which can disrupt the proper operation of the system.
Combustion is possible only when there is air present. A certain negative pressure must be maintained, with the pressure inside the furnace being lower than that outside, so that air from outside can enter the furnace. If the negative pressure inside the furnace is too low, the amount of air drawn in is minimal; as a result, the fuel does not burn completely, the thermal efficiency of the furnace decreases, black smoke is emitted from the chimney, the furnace chamber is not bright enough, and in some cases flames may even shoot out, disrupting the proper operation of the system.
Is the furnace catalyzed by Cu operated at positive pressure in its furnace chamber?