The height of the chimney

height of the chimney, its importance and functionality

chimney height significantly affects the draft.This parameter depends removal from the premises of the combustion products, and prevention of their sedimentation on the inner walls of pipes.In addition, the height of the chimney, and the material depends on the quality of combustion and rapid heating of the pipe wall that prevents the accumulation of condensate.

Kohl mentioned the material, it should be said that the installation of a brick chimney, pay special attention to the treatment of internal walls of brick, in order to avoid sedimentation of soot.Walls made as smooth as possible, without using muds (clay is a poor conductor of heat, so there is a great chance to reduce condensation and traction).

As you know, during the installation of the chimney is required to pay attention to many factors, because everything is interconnected.Particular attention should be paid to the design and calculations of height.

There is a paradox.It would seem that the higher the pipe, the better traction.But in practice it goes otherwise.Low chimney - bad, high chimney - too bad.And the answer lies in the aerodynamic drag experienced by leaving products of combustion.Thus, the longer they are rising up the chimney, which causes them to heat and slowly cooling walls.All this increases the mass of combustion products and reduces the traction.

Design chimney.Highlights of the design

Fitting the chimney depends on the layout of the room, the building structure and roof.Chimney for the furnace, most often adopted installed in the kitchen.Also, the variant of the installation in the hallway or utility room, if they are compatible with a kitchen wall.

If the boiler is installed in the house and a fireplace, the roof is necessary to bring more and chimney.However, with new technology it is possible to combine several chimneys in a chimney, but it should be remembered regulations and established standards.You have to calculate the total volume of gas output from all sources and on the basis of the obtained data, define the internal size of the chimney.

when designing should take into account all aspects.In addition to the height, you must know the type of heating device, type of fuel, the chimney material, its internal section and shape.Also, you need to calculate the appropriate position relative to the ridge of the chimney and the surrounding buildings, as well as the direction of the winds in a particular locality.

When conducting qualitative calculations, you can save money on fuel costs and improve the efficiency of most units.

produce correct calculation of stack height according to SNIP

Document 2.04.05-9 SNIP states that:

• Optimum chimney height can be slightly above 6 meters, but not less than 5m.Consider need from the grate and to the top.
• When the flat roof, the chimney height above its plane should be above 0.5m.
• When it is located at a distance of 1.5m.from the ridge or high parapet, its top edge make up 0.5m.relative to the structure.
• When it is located at a distance 1,5-3m.from the ridge or parapet, its top edge flush with doing them.
• When it is located at a distance of more than 3m.ridge or parapet, its top edge is positioned so that the lines between the "horse-pipe" and "upper-edge ridge" was created in the angle of 10 degrees.

For a good and stable traction note section.If the flue has a rectangular shape, the rectangular cross-section should be 1: 1.5, and the sectional inner corners should be rounded.

Rectangular chimney should not exceed the cross-sectional area in 10sm.kv, but the diameter of the round can not be less than 15cm (at least 18cm. For the fireplace).

With regard to the calculation of the height of the chimney boiler, when 6-8m., Construction should be strengthened stretch marks.

Before self-installing a chimney, check the fire safety norms.If you are not sure of your calculations, consult a specialist in addition, to protect their lives and save finances.