Furnace tube of atmospheric pressure furnace
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Are the furnace tubes of an atmospheric pressure furnace horizontal or vertical, and is it a cylindrical furnace or a box-type furnace?
The furnace tubes in atmospheric-pressure furnaces are generally vertical
Most are cylindrical furnaces with vertical furnace tubes. Square box furnaces are also used in large furnaces.
This is determined depending on the circumstances; generally, it is vertical in design, with cylindrical furnaces used for smaller sizes and cubic box furnaces for larger ones
In my opinion, there is no fixed rule; it depends on the size of the device. Box-type furnaces are usually horizontal, while cylindrical furnaces tend to have vertical tubes
Small units are generally vertical cylindrical furnaces, while those with a large processing capacity use horizontal square furnaces