Flue pipe: what is it and how does it work?

The flue pipe is a building element that allows to direct the fumes emanating from the combustion of materials or fuels that occurred inside the combustion chamber. Installing a chimney where there is a heating system that generates fumes is essential if you want to protect your health.

For the escape of fumes, the operation of the chimney of a chimney is based on the principle of communicating vessels , or an application of a principle of gravity which requires that a fluid contained in two (or more) in communication with each other, it tends to assume and maintain the same level, provided it has the same density, in each vase.
This also applies to air because it too is a fluid that has a mass and its weight depends on its density; that is, the quantity of matter per unit of volume.
The density of a fluid is also given by its temperature: the higher the temperature, the lower its density.
Thanks to this principle, the smoke manages to exit directly from the outlet.

Flue pipess: main elements and materials

The most recent realizations of flues are made of metal or in plastic . The difference in material also changes according to the need and where the flue system must be installed.

For example, if you need a chimney for chimneys, smoke evacuation at low temperatures from condensing boilers or you only need flexible flues, what you need are plastic ones.
If, on the other hand, you are dealing with high temperatures, we recommend choosing metal as the material.

 What is and how a chimney works and the main elements and materials of chimneys

Regulations for the flue and the flue system

In a heating system, the fume exhaust system is responsible for the expulsion of combustion residues which must always come in an optimal way so that it can guarantee maximum efficiency of the system itself. These important elements are fireplaces and flues which together make up a significant part of the entire flue system. Like any system, this is also subject to regulations and adjustments to ensure greater safety and effectiveness.

First of all, the chimney and the chimney must be suitable for the type and power of the generator. This generator can be of three types depending on whether or not they are connected to a duct or to a smoke evacuation device.
The typologies in question are the following: type A, type B and type C.
These generators are also divided by their thermal capacity and based on the number of appliances that the chimney will have to serve.

Let’s move on to fuel: the choice of material is important because each type (solid, liquid or gaseous) requires different fume exhaust characteristics.

Other regulatory information

For a correct development of the ducts, it will be necessary to calculate that during the flow of the fumes towards the chimney, the temperature of the latter gradually drops, giving rise to flow losses. To avoid this and the formation of deposits, the regulations prescribe that the flues must have a mainly vertical course without bottlenecks.

Even the chimney has its importance and must be installed in any system where combustion fumes are conducted to the roof by means of flues. This terminal is placed at the outlet of the chimney and its task is to disperse the fumes into the atmosphere.

The flue maintenance operations are important not only to maintain the energy efficiency of the energy system but also to maintain the safety of the building where it is installed in order to foresee situations of danger and potential risk.

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