Prefabricated industrial chimneys
Introduction
A chimney is a cannon or conduit for the smoke resulting from combustion to come out.[1] The term also has other meanings "Chimney (disambiguation)"), many in fact, since in general it is known as almost any hole or conduit, generally vertical, in which, naturally or provoked, what is known as the chimney effect occurs, consisting of the vertical upward movement of a fluid, frequently a gas, due to the difference in its density along its height.
Metonymy is also very widespread, whereby the group formed by an open hearth "Home (fire)") and a chimney is known by the exclusive name of chimney, which in the event that it is covered, or has some decorative intention, or some other reason not well determined, the name French is added.
In the term chimney it is necessary to distinguish between the smoke duct, which is the internal duct through which the gases from combustion circulate and whose characteristics are what are of interest, and the rest, enclosure or isolated and resistant structure that can take a multitude of forms. The vertical part of the chimney from the crown to the base is called the shaft of the chimney. There may be other non-vertical sections, which are connection ducts between the chimney itself and the smoke box, which is the meeting point of the generator with the chimney.[2].
History
The fireplace is an architectural solution that appeared relatively late. The most the Greeks did was to make a hole in the roof to release smoke from the home, an opening that in Ancient Greece was called kapnodeia. Although it has been translated as a chimney, it was a mere vent in the roof that used to be closed by a valve. Generally, as the ancient theater shows, if smoke accumulated it was let out through the windows.
The use of industrial chimneys dates back to the Romans, who removed smoke from their bakeries with tubes embedded in the walls. However, domestic fireplaces first appeared in the large homes of northern Europe in the 19th century. What can be considered the oldest chimney in history was found in Pompeii and dates back to the century: it is a square construction made up of five tubes that join together into a single one that goes outside above the house.[3].