The purpose of the chimney is to create a natural draft, as well as in the withdrawal of combustion products in the process of using gas or stove heating. The safety of the entire heating system as a whole, as well as the efficiency of its operation, depend on the quality of its manufacture and the correct installation. Chimneys "sandwich" should be strong, durable, and also must meet the requirements of fire safety. It is worth considering their device. Chimneys "sandwich" are a heat-insulated structure. They are perfectly suitable for heating installations of varying degrees of complexity, located even in the most unfavorable buildings from the point of view of safety. It is the chimneys of the "sandwich" that are most often recommended for installation in bathhouses, wooden houses and saunas. This is due to their design features.
Chimneys "sandwich" got such a name because of the design features. As the basis is a sandwich-pipe, consisting of an inner and an outer pipe, between which there is a layer of thermal insulation. Non-combustible basalt fiber is usually used as a heat insulating material. Its thickness is 25-60 millimeters. The outer tube can be brass, and the inner steel. Chimneys "sandwich" are divided into several types, depending on the thickness of the interlayer and the diameter of the pipes, which is appropriate to use in certain temperature conditions. A separate category is made of heat-resistant steel, and they are designed for large and powerful solid fuel boilers and furnaces.
The chimney "sandwich" has a number of positive properties. Their use provides a lot of advantages. Thanks to excellent thermal insulation, the formation of condensate is almost completely eliminated in them, which makes it possible to protect them from accumulation of various acids and moisture, and this significantly extends the life of the structure. In such constructions, there is practically no accumulation of soot. The use of such chimneys in industrial plants can provide excellent noise insulation.
The installation of such chimneys is a very important process, which it is desirable to entrust to professionals of high qualification. Specialists who have extensive experience with such equipment are able to perform the task quickly, qualitatively and as clearly as possible. Installation can be performed on a heater operating on gas, solid or liquid fuels. Since such a chimney is very compact, and its weight is small enough, small fixings to the walls will be enough to secure it. Under it is not required to make a foundation, which is much more economical and more profitable. It is worth saying that the restoration of chimneys of this type is not particularly difficult.
These structures are simple and reliable. With their help, the heating system works well, functioning in all weather conditions, due to which the room is warmed as much as possible qualitatively.