When designing an indoor ventilation system, many technical issues arise. Various guidelines for design approaches are contained in many methodologies and manuals. Fire safety issues are central to the installation of a ventilation system. It is necessary that the air lock, ventilation, smoke protection are designed in accordance with all the rules.
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Private house ventilation system.
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Accommodation and ventilation
Basically, in residential premises, a ventilation system is installed with natural removal and air flow. The inflow is carried out due to open vents and windows, and the installed ventilation grilles and valves contribute to the outflow. Exhaust ducts with grilles are installed in the kitchen, bathroom and toilet rooms, that is, where the outflow of air is most necessary to improve its quality. Sometimes it is necessary to install additional household fans.
Air shutter operation diagram.
Any ventilation should be designed taking into account the installation of air locks - vertical sections of the air outlet, changing its direction by 180 °. In the event of smoke or combustion products entering the house, the shutter will ensure that smoke cannot penetrate into other rooms.
Ventilation: natural or mechanical ventilation?
When installing natural ventilation, in order to ensure air movement at a speed of 300 m3 / h, the section of the ventilation duct should be 350 mm in diameter. With mechanical drawing, a channel cross-section with a diameter of 200 mm is established. The choice of ventilation system will depend on the individual layout of the housing under construction. For large enough areas of the house, it is advisable to think about mechanical or combined ventilation.
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Vacuum valve for sewerage device and main structural elements
The vacuum valve consists of the following structural elements:
- body (usually made of plastic), on the surface of which there is a hole located on the side;
- stem - an internal part with which the side opening can be easily opened and closed;
- rubber gasket - located above the stem, prevents it from rising above the set level;
- rod assembly protective cover, connected to the valve body.
Devices of this very design are distinguished by their reliability and durability. When choosing a vacuum valve for the sewage system, you should not ignore the reviews left by buyers, since it is this information that will allow you to purchase a product of good quality and is ideal for installation in a specific sewage system.
It is not difficult to install a vacuum valve for the sewage system yourself; you do not even need helpers and special tools. Installation is carried out in the same way as the installation of a conventional shaped part (tee, adapter, branch). The only thing that is important to consider is that the installation should be carried out only on the horizontal section of the system.
Find out more about the sewage system in a private house with your own hands here.
How to calculate indoor air exchange
Air exchange is calculated using different methods:
Ventilation device diagram.
In addition, there are certain standards and norms given in specialized documents and GOSTs. The simplest calculation is based on the area of the room. The standards provide for an air supply at the rate of 3 m3 / h per 1 square meter of the room.The number of people in the room does not matter.
Sanitary and hygienic standards assume the provision of air exchange per person in the room, equal to 60 m3 / h.
The calculation by frequency assumes an indicator of how many times per hour a complete air exchange should take place in the room. For example, in the bedroom, study or dining room - 1 time, in the bathroom and toilet - 25 times. All norms for multiplicities are given in regulatory documents and GOSTs. A more detailed calculation is carried out according to the formula: L = n * V (m3 / h), where n is the normalized rate of air exchange, hour-1, V is the volume of the room, m3.
To calculate the multiplicity, you need:
After the air exchange is calculated, you need to choose the scheme according to which the ventilation system will be laid. The general requirements are imposed on the ventilation system:
The scheme of ventilation in the event of a fire.
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Check valve working principle
The design of the damper is a protective device to prevent the appearance of back draft ventilation in the apartment. By allowing the flow of fresh air to flow in the desired direction, the valve inhibits the reverse flow.
The main advantage of the design is its automatic triggering.
The absence of a check valve will not only lead to contamination of the room with exhaust air, dust and insects getting inside, but also lead to drafts.
In ventilation systems, the valve prevents air from entering the common ventilation duct into individual rooms. Such designs work in systems with both natural and mechanical traction.
Such situations may arise due to the appearance of the following problems:
- incorrect installation of the chimney;
- insufficient supply of fresh air to the system;
- installation of forced ventilation in one of the apartments;
- check valve malfunction.
The main structural element of the check valve is the gate. When the valve is correctly installed, the valve should open under air pressure in one direction only.
When air moves not from the room, but into it, the shutter automatically closes.
Fire safety ventilation
To ensure indoor safety, the following requirements must be met:
Fire-fighting measures to prevent the spread of fire through ventilation
To ensure fire safety, you need:
Ventilation: installation materials
When installing ventilation, it is necessary to use fire-retardant and heat-protective non-combustible materials. Typically, sheet steel is used for venting.The thickness of the steel must be 1 mm or more.
Properly installed ventilation will help make your stay in the room more comfortable and safe for your health.
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Why install an air valve?
The main task of any ventilation and air conditioning system is to fully ensure the supply of fresh air and the removal of already "spent" air. It should be remembered that the circulation of air masses must be directed in accordance with the layout of the room. Otherwise, the efficiency of the device is reduced to zero.
Air valves are indispensable elements of the ventilation system, which allow automatic control of air masses in the pipeline. This function is extremely useful and convenient in the autumn-winter period.
The air valves presented on the site are designed for the following functionality:
- Regulation of transported air flows;
- Regulation and control of the amount of impurities and gases that are not safe for human health;
- Possibility of partial or complete overlap of the ventilation network.
Important:
Choosing the right air valve is an incredibly important task. The efficiency of ventilation and the comfort of people who will be in the room will depend on this. The use of air valves gained widespread popularity in the era of air conditioners and plastic windows. The use of these elements helps to prevent fogging of windows, the occurrence of allergic reactions, and oxygen deficiency.
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In addition to fast and high-quality repair of heating pipes, we provide professional installation of turnkey heating systems. On our page by topic heating > resant.ru/otoplenie-doma.html For communication, use the contact phone number of DESIGN PRESTIGE LLC 8(495) 744-67-74, which you can call around the clock. note Our company DESIGN PRESTIGE LLC is a part of the non-profit organization ANO INTERREGIONAL COLLEGE OF JUDICIAL EXPERTS. We also provide services for an independent construction technical expertise. Calculating the cost of heating Heating system repair cost Water supply installation cost Previous post Pipe box: decorative plastic Next post Couplings for polyethylene pipes and connection The product is only available in a rectangular box with different side dimensions. In addition, the valve can be used in explosive and aggressive working environments, but this requires ordering a product of the corresponding design.Heating from DESIGN PRESTIGE LLC Type: hot water here> /otoplenie-dachi.html
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