Thursday, October 27, 2011

Stainless steel chimneys

No doubt, in this rather harsh climate is especially important to take care of the heating system. The first thing you choose zealous owners cottages - a boiler equipment with high efficiency. However, often due to lack of information neglected chimney. And it is this part of the heating system plays a huge role and it depends on the efficient operation of the system as a whole. Chimney - it is an air channel through which combustion products are ejected. It may be a common chimney, built of brick, or modern modular metal structure for abstraction of smoke from the various modifications of boilers, fireplaces, furnaces. Most importantly, he performed his functions properly, ie provides traction, has good thermal insulation, was easy to install and use, durable, aesthetically appealing and satisfy fire safety requirements. For the chimney draft is the most important indicator, since it is responsible for the cost of the boiler or furnace. Thirst is a process of exchange of hot smoke, leaving the external environment, and the cold air coming from outside, but the thrust depends on the difference in temperature furnace and the environment. In addition, the traction force can be increased by structural features chimney, ie certain ratio of height and cross section. Another important issue is the formation of condensation on the walls of the pipe. This phenomenon is observed in virtually all types of chimneys and arises again because of the difference in temperature exhaust smoke and the walls of the flue. The phenomenon of condensation is harmful to the pipe walls, especially for a brick or a metal surface without anti-corrosion coating, because the reaction occurs chemically active substances with condensation. Reduce the time of the harmful effects of corrosion can be achieved by warming the chimney. And, of course, extremely important to properly mount the chimney. Whether it is brick or metal pipe, install it requires knowledge and skill. Nowadays, modern technologies allow quite simple and technological devices to solve the problem of drainage systems smoke. For example, in the Russian market are the most popular modular chimneys made of stainless acid-proof and fire-resistant steel, which can significantly simplify and expedite installation. The modular construction principle is that the removal of the collected parts. Due to the large range of fittings can be assembled any chimneys, the most difficult, non-standard configuration, while easily solving the problem with the draining and making the cleaning process quick and efficient. The individual elements are connected into the socket and secured with clamps. Further, a closer look at structural features of chimneys, their installation and operation. There are several types of chimneys. Single-wall chimneys are designed to vent smoke from boilers and geysers. They are made of stainless steel with a mirror shine. Single-walled tubes are non-insulated chimney with a wall thickness of 0.5 mm and operating temperature to 450 ° C. Such pipes are commonly used to fit inside the building. There is a separate type of single-wall chimneys - flexible, which are used for installation of chimneys with irregular geometry, as well as protecting the inner lining of brick chimneys, ie for installation in an existing chimney. Double-walled flue-ply insulated pipes, composed of the inner welded stainless steel pipes and the outer tube (shell) of larger diameter. Inside, they placed a layer of non-combustible insulating material based on basalt rock. The inner pipe made of stainless steel, takes on the impact of combustion products and aggressive media. It is resistant to burning, corrosion and acids. Insulation - extruded mineral insulating material based on basalt rock has very low thermal conductivity and effective thermal insulation properties, which helps to minimize the formation of aggressive condensate. Material being used - environmentally friendly, contains no binder resin, and even at high temperatures, pipe insulation does not emit an unpleasant-smelling substances. The outer tube can be made of stainless steel (including decorative - the mirror, textured, colored), steel, or to reduce the cost structure - made of galvanized steel. Decorative outer tube effectively looks and mounting the chimney inside the house blend seamlessly into the interior, and exterior installation. There are options for flue channels with the outer tube made of copper. Some companies offer chimneys with outer steel tube covered with a heat-resistant enamel of different colors. Most often they are used as flues for stoves, fireplaces. Double-walled flue substantially improve the heating devices, increase the efficiency of the entire system, which contributes to more economical operation of heating units. Over the transverse dimensions of the modular chimney should be noted that most trading companies offer a choice of pipe with an optimum for a particular user's inner diameter - 80 to 500 mm. Height and diameter of the chimney are determined in accordance with the parameters of the heat source. To import boiler problem of definition is minimized because the passport is the product graph of the diameter of the chimney and its height from the power boiler. Owners of domestic gas boilers, and columns also do not have to carry out complex calculations. The inner diameter of the flue outlet pipe diameter is determined by the heating device, and the height shall be not less than 2,5 m from the top to tip the tube. In this vertical section at the exit of the boiler must be over 20 cm, and the vertical part of the chimney at the tip - not less than 50 cm Experience shows that the optimum height of the chimney fireplaces, furnaces and boilers, low-power should be 5-6 m. The installation of modular inside the brick chimney is possible when the latter is in terms of square area of ??300 cm2. In this section of the outer tube modular chimney should be about 30% less. Installation of modular chimney start from the boiler, fireplace, furnace or other heating unit, in which the combustion of gaseous, liquid or solid fuel. The first element of the chimney is an adapter (reducer) with a special clip that provides full tightness. Adapter installed on the outlet of the boiler so that the built-in clamp with fastening bolt was on the part of the heating device. Once the adapter will be dressed in a pipe clamp tightened and begin to lengthen the horizontal flue. Preferably, the length of the horizontal section was minimal and in any case not exceed 2 m. The connection between the adapter and followed by a special module strengthen steel snap clips. At the end of the horizontal section set tee with a cone-shaped drain plug, which has a small hole for draining. Loosening the clamp and removing the cap, you can check the chimney and if necessary, cleaned. Vertical mounting elements carried out without the use of plumb in front. Compound modules are Spigot method. Crimped end of the module is directed upwards. The accuracy of the factory fit items excludes the violation of tightness in the places of contact. On each such connection is established by latching collar, which protects the system from the depressurization of the thermal expansion of the elements. It is worth noting that the assembly of single-walled tubes should be performed in reverse order: corrugated ends of the upper tube is inserted into the socket bottom. This is done in order to form a condensate is not leaked to the outside of the non-insulated pipes and did not form on them divorces. One important note - do not have the butt in the place of the overlap between the floors. It must be either below or above. On the vertical sections every 2.5 m installed wall clamps on the horizontal - every 1.5 m. They also set the angle before the challenge and immediately after it. For chimney height exceeds 10 m, there should be wall-mounted triangular struts. In order to fire between the chimney and floors should do a gap (not less than 15 cm for pipes with insulation and not less than 35 cm for non-insulated pipes). Flowing through the uninsulated pipe wooden joists, the gap must be run with mineral wool, and at the top and bottom of its surface to install asbestos cement sheet with a thickness of 10 mm, with a metal collar. In places where the chimney goes through the roof, modular system provides an element such as a roof cutting. This is a conical tube with welded under roof sheets. Typically, roof cutting designed to appropriate roof angle: 0 ° C, 5-20 ° C, 35-55 ° C, etc. The specific range depends on the manufacturer. Thanks to the taper roof Cutting fix the desired angle roof, and under roof sheet is slid under the nearest top joint of roofing material or fad. Flue pipe goes through the roof Cutting, and on top (in the narrowest part of the conical tube cutting a roof) it is covered by the relevant apron-clamp. Installing a pipe on the roof, should be borne in mind that it must be inferred above the ridge by not less than 0,5 m. In this case, it be buried in snow and no problems with traction. Plan to carry out installation works for the installation of the heating unit and erection of a chimney for it, be aware that their competent performance depends not only on the reliability of the system as a whole, but also fire safety in its operation. Therefore, we strongly recommend that you contact a professional firms with appropriate licenses and is responsible for the quality of their work. Nor should we forget that the chimney in need of expert care. At least twice during the season, clean it occasionally.

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