Chimney - a special channel for the flue gases from the furnace, furnace, boiler or fireplace, as well as to create natural draft and air Teploagregat combustion.
All heaters operate on different principles.Accordingly, all have different requirements for the arrangement of chimney systems.For some heaters used brick, for others - a metal, for the third - coaxial chimneys.All modern heating installations provided technical passports.They contain the necessary requirements to the device chimney systems, materials to be used, and recommendations of specific producers or chimney flues own production.
often in small suburban towns and villages can be found chimneys, arranged with the help of asbestos-cement pipes.They are used for different types of heating systems including heating, which is a flagrant violation of fire safety rules.When the device chimney system from asbestos cement pipes is necessary to remember that the maximum flue gas temperatu
Let's all in order.
- chimneys Classification System Requirements smoke video video video
- asbestos cement pipes for the chimney, chimney installation and insulation
Plants improved every year and modernized.Increasing the efficiency of heat generators, fuel consumption is reduced.But the flue gas remains.To effectively and, most importantly, safe flue gas chimneys using different designs and with different materials.
brick chimney - aesthetic, beautiful and durable.Well suited for oven heating coal and wood.But as it turned out, for modern heating technology is not as he was, and durable.Modern gas and gasification boilers work in automatic mode on and off.This leads to a cooling of the flue and its subsequent warming and, therefore, condensation.It saturates the masonry and brick corrodes and acidic water only accelerates the process.To avoid such an impact on masonry chimney, it must gilzirovat.As the tabs used asbestos, plastics or other refractory materials.
ceramic chimney - the most technologically advanced and the chimney, but also the most expensive.It has a large fire resistance up to 1200 ° C, wear-resistant, easy to install and maintain.A large number of such systems is made in Germany.Among them should be noted the company chimneys Schiedel.They give a guarantee on their products for 30 years.The chimney is equipped with all necessary accessories for maintenance of the chimney.It can be used for all heating appliances, including the boiler on liquid fuel.
Chimneys stainless steel .Very often the choice of the chimney - it's a game of roulette.Stainless steel undergoes irreversible change at a temperature above 500 ° C and loses its mechanical properties.Use only for boilers that run on gas, operating temperature should not exceed 400 ° C.There is a good stainless steel, which can withstand the temperature of the flue gases up to 1000 ° C, but that's another price.
Chimneys enamelled steel - used for gas heat generators with temperatures of waste gases is not bolee160 ° C.Enameled chimneys made of steel St3.wall thickness - 0.5mm.Due to its coverage reduced flue gas dynamic resistance.
Chimney of asbestos-cement pipes - used as a temporary solution.Asbestos-cement pipe is used as the end of the chimney, first using a masonry or stainless steel.Asbestos cement pipes acquired the consumer due to the low cost and ease of installation.Install two or three meters of the pipe or the same length of masonry - things are not comparable.
Coaxial chimney - or double pipe, gas boilers manufacturers often bundle their boilers podomnymi chimneys.Sometimes the chimneys used for fireplaces to warm the outside air.
metal and asbestos chimneys separated into single-walled or double-walled and insulated not - insulated.As a heater used in chimneys with basalt stone wool substrate.Insulated metal chimney is also called sandwich.
System Requirements smoke
main options when choosing a chimney - is the maximum flue gas temperature, resistance to soot fire and the cross-sectional area.Maximum temperature of exhaust gases produced in the furnace heating using coal and is about 400-500 ° C.For solid fuel boilers this parameter slightly lower at 400 ° C for gas and pyrolysis boilers - 140-250 ° C.
temperature decreases below 160 ° C there is the possibility of condensation of water vapor on the walls of the chimney.Because the combustion process allocated different oxides, they are dissolved in water vapor and in the condensation leading to the destruction of the chimney.When using chimney stainless, galvanized, enamelled steel, ceramic materials, or asbestos cement pipes must be installed condensate trap from time to time to check for condensation.Condensation chimney - black, oily liquid with a specific smell.
It should be remembered that an increase in flue gas temperature for each 20 ° C loses about 1% of energy consumed fuel.
materials used in the construction of chimneys must be fireproof.
chimney section is also important for the stable operation of the heater.For masonry and chimney height of more than 5m section size is 140h140mm for circular cross-section diameter of the pipe must be at least 150mm.For the chimney height must be less than 5 m to increase the area of the channel: for the square - 140h200mm for round - 180mm.
SNIP 41-01-2003 also indicates the size of channels for different heat output devices, respectively:
- 140x140 with a power heater to 3,5kVt .;
- 140x200 at a power of 3.5 to 5,2kVt .;
- 140h270 with a power 5,2h7kVt.
area round chimneys must comply with square rectangular ducts.
chimney design should provide good traction.It arises from the difference in temperature and pressure inside and outside the house.It can be designated as the speed of the flue gas in the chimney.Link depends on the cross section of the chimney and its design, surface roughness.When the device of the chimney to avoid horizontal sections, sharp turns narrowed areas, the use of materials that have a minimum surface roughness.The best section of the chimney is a circle or oval.Square or rectangular cross-section is undesirable.This is due to the fact that the smoky gases in the chimney of a conditional move spiral and rectangular chimneys in the corners are formed swirls that impairs traction and contributes to the accumulation of soot.
original chimney cleaning soot:
draft in the chimney must be adjusted.You can use the gate for manual adjustment.For automatic control using stop - the moderator rods.If the chimney is audible noise and buzz - this indicates excessive draft in the chimney.It is necessary to partially block the chimney.If smoke comes out of the crevices of the furnace, it indicates a lack of traction, in which case you need to increase the flow of air into the furnace heat source.
Soot - an integral component of the combustion of fuel.Its presence and amount will depend on the type and quality of fuel.But in any case the revision of the chimney should be inspected at least twice a year.
first time before the heating season to check whether there is debris and soot in the chimney, inspect the structure for damage, the second time - in February - to clean and check the entire chimney system.
soot fire - the most dangerous in case of fire.It should also be remembered that not all black lights.The combustion of soot in the chimney is not long 5-10min.But this time is enough to destroy the vertical flue and fire as a consequence of self-ignition of nearby structures.
asbestos cement pipes for the chimney, chimney installation and insulation
use of asbestos cement pipes to the chimney has become a bone of contention for the stove-makers.Some argue in all forums that you can.Other vehemently objected to them.Within a few years of disputes to an agreement did not come.Several conclusions from this discussion.
asbestos cement pipes - the cheapest in the world of the pipe, which contributes to their more widespread.
SNIP 41-01-2003 item 6.6.13 allows the use of asbestos cement pipes in a chimney flue gases at a temperature below 300 ° C.Modern heating equipment smoke a temperature in the pipe will not be disposed of otherwise worthless this equipment, but the old stove on coal and wood - calm.That is set to a chimney or gas pyrolysis boiler can, on the stove - you can not.
main technical characteristics of asbestos-cement pipes
Here asbestos opponents argue that the burning of the soot has not been canceled and, in principle, they will be right.But regular cleaning of the chimney eliminates this argument.The lower the flue gas temperature of modern boilers and almost no soot.
After thinking over the above stated and decided to install a chimney from asbestos cement pipes, consider these recommendations:
- install pipe only reinforced concrete or masonry product;
- sure to set "fuzz", when you pass through the ceiling.Size fuzz choose based on the size of the pipe + 100-150 to install non-combustible material;
- when passing through the roof, be sure to set the otter, it will protect the attic from getting into the rain;
- pipes must be docked to the special coupling with asbestnogo cord.
Thermal insulation chimney improves safety, increases the efficiency of the system, reduces warm-up time of the pipe as a consequence - reducing the number of condensate.
overlaid asbestos cement chimney bricks, we get an elegant look, while increasing lines of operation of the chimney.