Production ventilation is a set of measures aimed at organizing and maintaining a stable air exchange in production facilities. Operating equipment and production processes are often a source of airborne particles and toxic fumes, which can adversely affect human health. In addition, the lack of fresh air reduces performance and ability to endure physical activity.

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Ventilation of industrial facilities is essentially the provision of fresh air and the removal of waste air. And it includes a number of solutions.

The first step is planning. And for this it is necessary to take into account several important conditions: the presence of harmful fumes in the premises, gas pollution and temperature regime.

To solve the tasks, you need to take into account the necessary working conditions, as well as build on the parameters of the room and its technical characteristics.

Most often, in large rooms, supply and exhaust ventilation with cooling or heating of air is used.

Currently, there are many ventilation systems that differ in functionality and cost. This is often a specific solution for each individual room. It is thanks to this that we get an effective, economical, and ideally coping with the tasks set. It should be understood that the ventilation system is a very complex mechanism that not only provides clean and fresh air in the room, and therefore high productivity not only of equipment, but also of employees, as well as their well-being, and also allows you to control many parameters to create optimal climatic conditions depending on the time or part of the room. The ventilation system can be controlled mechanically or electronically, but mixed versions are also possible.

Industrial ventilation challenge

the main task industrial ventilation - ensuring the constant presence of clean air in the premises (without impurities, odors and harmful components). This is ensured in 2 ways: by removing contaminated air masses from the shops and providing fresh air. The second task is to maintain a certain microclimate. This includes requirements for temperature and air humidity. These requirements are especially relevant for industries that generate a lot of heat, moisture and harmful fumes.

A professionally designed ventilation system contributes to the following benefits:

• staff get sick less
• labor productivity increases
• a favorable microclimate is maintained
• the equipment does not accumulate moisture, the metal does not oxidize or corrode
• the requirements for production processes are met.

Exhaust aeration in production

Air ducts are mainly used for ventilation of local spaces that are inaccessible for infiltration flows. Air movement and distribution occurs without external coercion, only under the influence of temperature differences and atmospheric pressure outside and inside the premises. To increase the efficiency of aeration, deflectors are installed at the outlet, special expansion nozzles that draw exhaust air from the room. This is also facilitated by window transoms and ajar skylights.

In summer, open gates, openings in the outer walls and doors play the role of supply air ducts. In the cold season, in warehouses up to 6 meters high, only openings are opened that are at a height of at least 3 meters from the zero mark. At a height of more than 6 meters, the bottom of the ventilation openings is designed at a distance of 4 meters from the floor level. All openings are equipped with water-repellent canopies, which also deflect the supply air jets upward.

Supply and exhaust aeration

Exhaust of polluted air takes place at the expense of transoms and ventilation shafts. The transoms play the role of a kind of heat damper, opening and closing of which regulates the air pressure in the ventilation flows. As an additional pressure regulator, special openings equipped with louvered flaps are designed:

• slightly above floor level - stimulating air flow,
• just below the ceiling level - optimizing its outflow.

The volume of circulated air is proportional to the area of \u200b\u200bopen transoms, openings and ventilation openings.

Note

1. If the concentration of harmful substances in the outdoor air is 30% higher than the maximum permissible standards, natural ventilation is not used.
2. The upper hood elements are installed approximately 10-15 degrees below the roof ridge. This reduces the risk of their destruction.

Design and installation

To ensure the highest quality ventilation, it is necessary to design and install it already at the construction stage. This is the only way to take into account all safety measures, to correctly design the exhaust zones.

But it also happens that it is necessary to install a ventilation system in an already constructed building. In this case, all the conditions in which the system will be operated, as well as the purpose of the room itself, should be taken into account. The choice of equipment always depends on the explosion and fire hazard of the room.

As is known for industrial premises, general exchange and local ventilation is used. The first is responsible for air exchange and air purification of the entire room. But with the help of local suction, it is possible to solve only local problems in the place of formation of those very harmful substances. But it is not possible to keep and neutralize such air flows completely, preventing their spread throughout the room. Additional elements are needed here, such as umbrellas.

The choice of equipment for the installation of ventilation in industrial premises is influenced by the type of production and the amount of harmful substances emitted, the parameters of the room itself, and the design temperature for the cold and warm seasons.

Summing up, I would like to say that such a difficult task as the calculation, design and subsequent installation of ventilation should be performed by qualified specialists who have a wealth of knowledge and experience accumulated over the years.

Classification of industrial ventilation by type of action

There are different typesindustrial ventilation. They are classified according to the following parameters:

• the way of organizing the inflow and outflow of air masses (natural, forced);
• by functionality (supply, exhaust, supply and exhaust);
• way of organization (local, general exchange);
• design features (channelless, channel).

The simplest and most cost-effective is natural ventilation... It is based on the laws of physics, when the warmer layers of air, rising upward, displace the cold ones. The main disadvantage of such systems is the dependence of the season, weather conditions and a limited scope (suitable for a limited range of industries). To organize natural ventilation in production workshops, 3 levels of adjustable openings (vents) are arranged. The first 2 are arranged at a height of 1-4 m from the floor, level 3 - under the stream or in a light-aeration lantern. Fresh air enters through the lower openings, and dirty air is forced out through the upper ones. The intensity of air exchange is regulated by opening / closing the vents. Natural ventilation can only be used for single-storey buildings.

Forced ventilation - more efficient system, including a set of equipment and utilities. However, there is a price to be paid for efficiency, as it involves the purchase of expensive equipment and the consumption of large amounts of electricity.

Only supply or exhaust ventilation is used extremely rarely (mainly in industries where air pollution is low). Much more common supply and exhaust systemsproviding a more uniform air exchange.

General ventilation organized in large industries. Depending on production processes and air composition, it can be used in combination with other systems. Local ventilation, in contrast to the general exchange, monitors the purity of the air in certain areas - for example, over the welding or painting area. This type is chosen if the general exchange does not cope with ventilation in all rooms.

What does the combination of local exhaust and supply general exchange systems give? Taking in the polluted air, the exhaust system does not allow it to spread throughout the room, and the supply system provides an inflow of fresh air (it can be equipped with filters and a heating system).

Duct ventilation implies the organization of boxes or pipes of large cross-section, designed to transport air. Channelless systems are a set of fans and air conditioners built into the openings of walls or ceilings.

Ventilation design for production halls

Design industrial ventilation systems has its own specifics. There is no universal equipment capable of meeting the needs of all types of industries. When designing, a lot of data is taken into account. The algorithm for solving the problem is as follows:

1. Calculation of the required air exchange.
2. Selection of equipment that supports the design parameters.
3. Calculation of air ducts.

At the first stage of design, a technical assignment (TOR) is developed. It is drawn up by the customer and includes requirements for air parameters, features of technological processes, system tasks.

• the architectural plan of the object with reference to the terrain;
• building construction drawings, including general view and sections;
• the number of working personnel in one shift;
• operating mode of the facility (one-shift, two-shift, round-the-clock);
• features of technological processes;
• potentially dangerous zones with reference to the plan;
• required air parameters (temperature, humidity) in winter and summer.

The calculation of the required air exchange is carried out in the following areas:

• supply of fresh air according to sanitary standards (according to the norms for one person 20-60 m³ / h);
• heat assimilation;
• moisture assimilation;
• dilution of air to the maximum permissible concentration of harmful substances.

The largest air exchange obtained as a result of the calculations described above is taken as a basis.

Using an emergency ventilation system

According to SNiP ("Ventilation of special and industrial buildings") in hazardous industries, it is necessary to provide emergency ventilation system... An emergency situation may arise in the event of an emergency release of explosive or poisonous gases, fire. It is a completely independent unit of the exhaust type and is calculated in such a way that, when working with a conventional system, an 8-fold air change in 1 hour is provided.

Ventilation control

Automationmanagement of ventilation systems allows you to optimize the process and reduce operating costs. This approach allows minimizing human participation in management and reducing the risk of "human factor". Automatic control implies the installation of sensors that register air temperature / humidity, concentration of harmful substances, degree of smoke or gas pollution. All sensors are connected to a control unit, which, thanks to the specified settings, turns on or off the equipment. Thus, automation helps to comply with health requirements, respond quickly to emergencies and save significant money.

Ventilation systems are one of the main consumers of electrical and thermal energy, therefore, the introduction of energy saving measures can reduce the cost of products. The most effective measures include the use of air recovery systems, recirculation air and electric motors with no "dead zones".

The principle of recuperation is based on the transfer of heat from the displaced air to a heat exchanger, which results in lower heating costs. The most widespread are plate and rotary recuperators, as well as installations with an intermediate heat carrier. The efficiency of this equipment reaches 60-85%.

The principle of recirculation is based on the reuse of air after it has been filtered. At the same time, part of the air from the outside is added to it. This technology is used during the cold season to save heating costs. It is not used in hazardous industries, in the air of which harmful substances of 1, 2 and 3 hazard classes, pathogens, unpleasant odors can be present and where there is a high probability of emergencies associated with a sharp increase in the concentration of fire and explosive substances in the air ...

Considering that most electric motors have a so-called "dead zone", their correct selection allows you to save energy. As a rule, "dead zones" appear during start-up, when the fan is idling or when the mains resistance is much less than what is required for its correct operation. In order to avoid this phenomenon, motors are used with the ability to smoothly adjust the speed and with the absence of starting currents, which saves energy at startup and during operation.

Optimal air parameters for some industrial premises for working conditions or storage of materials

Type of production and premises	Temperature	Relative humidity
Libraries, book depositories
Rooms of museums with exhibits made of wood, paper, parchment, leather
Artists' studios with paintings on easels
Warehouses of paintings in museums
Storage rooms for furs
Storage rooms for leather
Mechanical engineering enterprises
Metals Laboratories
Thermo-constant rooms for precision work of various groups
Extra clean rooms for precision work:
Precision engineering workshop
Workshop for winding transformers and coils, assembling radio tubes
Workshop for the manufacture of electrical measuring instruments
Selenium and copper oxide plate processing workshop
Optical glass melting shop
Lens grinding workshop
Computer rooms with built-in fans:
Parameters of the air supplied to the inside of the machines
Air parameters at the exit from the machines
Room air parameters
Hospitals
Surgical
Operating
Woodworking industry
Workshop for mechanical processing of wood
Joiner's and procurement department
Workshop for making wood models
Production of matches
Drying matches
Printing production
Sheetfed offset printing workshop
Workshop of rotary printing on roll paper
Offset paper warehouse
Warehouse of coated paper in sheets
Roll paper warehouse for rotation
Workshops: bookbinding, drying, cutting, gluing paper
Photographic production
Development for photographic film
Film cutting department

Ventilation of industrial premises is one of the main components, which is included in the complex of measures to create favorable air conditions for humans in the room. The ventilation system must not only meet all sanitary standards, but also fully comply with the building's construction requirements. It must also support the meteorological parameters of different rooms - this must be taken into account when installing industrial ventilation. Proper ventilation is the main prerequisite for creating a comfortable indoor atmosphere.

The requirements for different ventilation systems are also different. For example, in a country house and in a city apartment, they will be completely different. In an apartment, the main factor is high-quality cleaning of the outside air, while for a country house, the noise level is more important. Therefore, cottage owners choose ventilation systems that emit as little noise as possible during operation. The air outside the city is much cleaner than the city air, so the requirements for the quality of filters in the city are stricter. Therefore, it is better to design a ventilation system even at the construction stage.

Each ventilation system must take into account the flow of air from the street and its return. For its balance in the house, they must be carried out simultaneously.

Classification of ventilation systems

Many different types of ventilation systems are known today. This diversity is due to differences in the purpose of the premises, the nature and type of the technological process. Based on this, a classification of ventilation systems was developed by:

• the way air moves - artificial and natural;
• purpose - exhaust and supply;
• design - channel and channelless;
• service area - local and general exchange.

Natural ventilation of industrial facilities

Natural ventilation in the room is the most common. It does not require additional equipment or power supply. With this type of ventilation, air movement occurs due to temperature and pressure differences.

In buildings where you can observe a large amount of excess heat, the air will be warmer than the outside. Cold air will displace warm air from the room, thereby creating its circulation.

Industrial ventilation systems based on natural ventilation function due to different air pressures. It should be noted that this difference should not be less than 3 m, the length of the air ducts should not be more than 3 m, and the speed of the air in them should not exceed 1 m / s.

The design of such ventilation is not complicated and does not require the use of additional equipment and electricity. Its effectiveness depends on factors such as temperature and air velocity. In some cases, natural ventilation does not make it possible to solve the problem of effective ventilation, therefore additional equipment and installation of ventilation for industrial premises is required.

Mechanical ventilation of industrial facilities

Mechanical ventilation in the system requires air movement equipment. This equipment includes electric motors, fans, air heaters, etc. With its help, ventilation systems ensure the supply and removal of air. If necessary, they can heat the air, humidify and purify it. This distinguishes them from natural ventilation systems. To create comfortable conditions, ventilation of industrial premises can simultaneously combine both natural and mechanical ventilation types. It depends on the choice which, in the end, the installation of ventilation of industrial premises will be carried out.

In the case when it is required to install and install ventilation at the facility, its design, installation depends on the facility, its location and purpose.

Supply ventilation of industrial facilities

Such ventilation is used to supply fresh air from the street and return air from the room instead. In this case, the supply air can be additionally processed, for example humidified or heated.

Exhaust ventilation of industrial facilities

This type of ventilation system is used to remove polluted air from industrial premises. They are used where air must not get from one room to another. For example, in bathrooms, laboratories, catering establishments, warehouses.

As a rule, it is combined with an air supply system, because without it, the exhaust ventilation of an industrial facility will be ineffective. Although, such ventilation can be installed independently. Two systems can be installed both on all premises, and on its separate areas.

In the case when the amount of extracted air turns out to be more than the supply air, there is a high probability of occurrence of such negative phenomena as drafts. The exhaust ventilation system of the room removes polluted, warm air from certain places, in certain quantities - this is all taken into account when the ventilation of industrial facilities is installed. If necessary, this air can be additionally cleaned from impurities that should not enter the environment.

Local ventilation of industrial premises

Such ventilation is designed to provide room air through flow ventilation. The exhaust air is then removed by a local exhaust ventilation. Usually this type is used in manufacturing workshops. In residential premises, it can be used when part of it is used as a workplace, where there is significant heating of the air or the release of harmful substances.

Local supply ventilation for industrial production

Such ventilation is suitable for open production with the emission of harmful substances, if it is not possible to install a local exhaust system.

When is the installation of local exhaust ventilation in industrial premises used?

It is used in rooms where harmful substances are localized and their further spread is preventable. Its use is also possible in residential premises. In rooms where harmful emissions are present, the local exhaust ventilation system is very important, because it guarantees the removal of harmful substances (gases, smoke, dust) that heat devices emit. Local suction systems are used to remove them.

With this type of ventilation, the air that is removed from the workshop must be cleaned before it enters the atmosphere. The complexity of the device and its design depends on what degree of cleaning is required. For optimal cleaning, as a rule, several filters (two or three) are installed during installation.

This type of ventilation system can be called the most effective, since the removal of harmful substances occurs immediately when they are released, preventing their spread in the room.

However, local exhaust ventilation cannot fully solve all the tasks assigned to it. It is unable to localize the substances released during production if they are distributed over a large area. A similar situation occurs when the activity is carried out over the entire area or the work with these substances is directly related to their movement. Here general exchange ventilation systems will be more effective. They are able to remove polluted air evenly throughout the room.

General exchange forced ventilation of industrial facilities

Such ventilation is used to assimilate excess moisture and heat, dilute vapors that have not been removed by other types of ventilation. If there is a lack of heat, then the general exchange supply ventilation is combined with heating the supply air or its mechanical stimulation. During its operation, the supply air in full compensates for the air removed from the room, which has harmful substances.

General exchange exhaust ventilation in workshops and industrial buildings

Such a ventilation system is an installation that evenly removes air from the room and carries out general air exchange. It is suitable for installation in apartments and offices, cottages and country houses. In workshops and industrial buildings with harmful emissions, more complex installations of such a ventilation system are used. In this case, the laying of air ducts is carried out on the floor or in the form of underground channels. If there is a need for general exchange exhaust ventilation, then its design is carried out taking into account all the characteristics of this room.

There are times when an installation can contain an extended exhaust duct. If the length of such an air duct is more than 30-40 meters, a centrifugal fan is installed instead of an axial one.

In the case when various harmful substances, such as dust, moisture, etc., are dispersed in the room, then it is not possible to do with any one ventilation system. Here, general exchange exhaust ventilation, which removes harmful substances from the air, has proven itself well in the installation of ventilation in industrial premises.

Duct and ductless ventilation

The ductless ventilation system does not contain air ducts. In it, air exchange is carried out through vents, windows, etc.

It is quite simple and therefore cheap, but ineffective in comparison with the channel system. In the duct system, there must be special channels where air moves to certain places. Both systems are used in apartments, cottages, industrial facilities.

Industrial ventilation differs from residential ventilation not only in scale, but also in the equipment used, requirements and a number of other parameters.

Ventilation of industrial premises must cope with a number of complex tasks

Ventilation systems in industrial plants must cope with a number of difficult tasks: with the extraction of a large volume of exhaust air from the premises, therefore, their design and installation must be approached with special attention.

Types of industrial ventilation

Like household ventilation, industrial ventilation is of two main types.

1. Natural - exhaust ventilation, in which air circulation in the object is carried out due to the natural flow of air masses through the ventilation ducts. The work of such a project is based on the difference in temperatures and pressures inside and outside the premises. The design of industrial ventilation of natural type should be carried out taking into account the amount of heat emitted from the production equipment.
2. Forced - ventilation system of premises, in which specialized equipment is used to circulate air masses. This scheme is good in that its performance and efficiency does not depend at all on weather conditions, and air inflow and exhaust are provided by fans and other equipment.

Each of these industrial ventilation systems has its own installation and operation features, as well as advantages and disadvantages.

For example, installing industrial ventilation of a natural type will allow you to significantly save on ventilation of premises, but mechanical supply ventilation will cope with the removal and flow of air, regardless of the air temperature outside and other factors.

Features and principle of operation of industrial ventilation of natural type

If for your enterprise you have chosen the installation of industrial ventilation, which works exclusively due to the difference in temperature and pressure in the room and outside, then in this case the industrial equipment during operation should not emit harmful substances into the environment. Otherwise, it is impossible to do without supply and exhaust ventilation with air filtration.

In order for the exhaust air to leave the production premises in a natural way, it is necessary to calculate and install special ventilation holes, which must be located at different heights.

The principle of operation of natural air exchange in a room looks like this:

• heated air rises and leaves the premises through holes made in advance;
• heavier clean cold air descends through the same holes down;
• air flows are mixed, exhaust air goes outside, clean air enters inside.

Ventilation of industrial buildings in this way is rarely used, since its efficiency is not enough to provide a large industrial area with fresh air. Even the most accurate calculation will not help where the equipment works with the release of harmful substances into the air.

Benefits of forced industrial ventilation

Industrial ventilation systems that use specialized ventilation equipment to ensure efficient air exchange are much more efficient and boast their own advantages.

1. Large coverage area - industrial air handling units use special powerful fans that provide intense air flow.
2. Efficiency - the operation of an industrial ventilation system does not depend on any external conditions.
3. Additional capabilities - this includes the ability of supply and exhaust systems to filter air at facilities, humidify or dry it.
4. Targeted air supply - with proper design and installation, it is possible to supply fresh air directly to the workplace.
5. Increased work safety - ventilation of forced-type industrial facilities can trap and remove harmful substances, hazardous gases from the air in an industrial room, and clean air masses.
6. Possibility of carrying out assembly work in buildings after their construction is completed. This favorably distinguishes forced ventilation from natural ventilation, the design of which must be done at the design stage of the entire building.

The disadvantages of a forced ventilation system include the high cost of equipment that the system needs to fulfill its purpose.

The main disadvantage of forced ventilation is the high cost.

In addition, the equipment for the circulation of air masses during operation makes a lot of noise, therefore, when installing such installations at the enterprise, it will also be necessary to calculate the sound insulation.

Types of industrial forced ventilation systems

The purpose and classification of supply and exhaust ventilation can be different. There are five types of forced ventilation.

1. General ventilation - such ventilation provides air exchange throughout the entire territory of the facility. Most often, such a hood is installed in rooms where work is carried out with toxic and harmful substances for the environment, as well as where there are no fixed workplaces.
2. Local ventilation of industrial enterprises - such ventilation is used where it is necessary to provide effective air extraction in a specific area. For example, local equipment is used for its intended purpose, if it is necessary to remove exhaust air at the center of emission of harmful substances.
3. Mixed type - by installing such exhaust equipment, you guarantee the ability not only to carry out general air exchange, but also to carry out ventilation in the workplace.

Regardless of the type, the design of ventilation for an industrial building involves a complex calculation. In ventilation systems, different principles of air supply are distinguished:

• supply air - the exhaust scheme implies the presence of an injection fan, and the exhaust air is released due to the fact that the pressure in the room increases;
• exhaust - when such a system is installed in a room, the fan operates to drain air masses, but their entry from the outside occurs due to rarefied pressure;
• supply and exhaust - such schemes are the most effective, since in them both the air flow into the building and the outflow are carried out using specialized equipment;
• recirculation - the calculation of such a system is made in such a way that the exhaust air is cleaned with the help of special filters, and then returns to the room again, representing a closed supply and exhaust circuit.

When installing the required system, it is necessary to take into account the working conditions at the facility, as well as the needs of the production.

Industrial ventilation equipment

Installation of industrial ventilation systems involves the use of specialized equipment. During calculations, some of its characteristics may change, but the main components remain unchanged.

1. Ventilation ducts are special pipes, the cross-section and size of which depends on the amount of air that must be driven out per unit of time. The efficiency of the entire system depends on the correct design of the channels, it is through them that air is transported through the object. Channels can be made of plastic, aluminum, metal and other materials.
2. Fans are the main component of any air circulation system, provide the necessary power, and also set the direction of movement of air flows.
3. Shaped parts - like pipes, can be made of plastic; they serve to connect channels, create their turns and forks.
4. Filters - an industrial filter can trap large and small impurities that are inevitably found in the air of any industrial facility. To calculate the required type of filter, you need to know how dirty the air is at the facility.
5. Recuperators - the difference between an industrial ventilation recuperator and a household one lies in the fact that it is able to heat more air per unit of time.
6. Air conditioning systems - such systems must be equipped with ventilation if you want the air at the enterprise to be not only clean, but also fresh.

Recuperator - equipment for the ventilation system required for air heating

Typically, additional components can be used with basic ventilation equipment to increase the efficiency of the overall system.

Features of industrial ventilation design

Whatever the ventilation duct and whatever classification of the supply or exhaust equipment you use, certain points and parameters must always be taken into account when installing an air circulation system in an industrial enterprise.

Before proceeding with the calculation of ventilation, it is necessary to determine the basic conditions of the room, that is, its area, the type of equipment used, the configuration of the space and much more.

It is worth considering the climatic features of the area in which the manufacturing enterprise is located. It is always necessary to take into account the purpose of the premises: if it is a plastics production workshop, then the capacity of the exhaust equipment must be sufficiently high.

The ventilation calculation should include the following data:

• section of the incoming and outgoing air channels;
• ventilation openings area;
• the frequency of air exchange;
• estimated capacity of the equipment;
• the amount of materials needed to build the system.

Calculation, design and installation of ventilation systems for industrial premises is a very complex and responsible process, which must be approached very carefully.

If you do not have the necessary skills and tools for this, then it is better to entrust this work to qualified professionals who will cope with it much better, and the system itself will last as long as possible and will effectively cope with the tasks set.

During operation, the air inside the premises changes its parameters - temperature, humidity and composition under the influence of various factors: changes in the parameters of the outside air, the release of heat, moisture and carbon dioxide from people, dust and other harmful substances from operating equipment, machines, installations. In this regard, it is necessary to make air exchange, i.e. remove polluted indoor air and supply cleaned fresh (outdoor) air instead. The task of ventilation is to ensure air exchange in industrial premises to maintain the design parameters of the air in them.

Air parameters can be:

• comfortable and they are provided by ventilation systems of residential and administrative facilities;
• permissible, achieved through the operation of ventilation of industrial buildings.

Other tasks are often set for ventilation systems of industrial premises: removal of smoke (in case of fire), dust and harmful substances (during the operation of machines, units and equipment). Ventilation of industrial premises is a set of devices and measures that ensure the calculated air exchange. Depending on the processed air flow, a distinction is made between domestic (up to 10,000 m³ / h) and industrial ventilation (over 10,000 m³ / h). Ventilation of industrial buildings is a mandatory measure in production halls, hangars and other premises where technological equipment is used, people or mechanisms work.

Ventilation of industrial buildings

Due to the large amounts of transported air, industrial ventilation equipment is distinguished by its weight and size characteristics, energy consumption and increased requirements for its reliability and safety. Any operation, including industrial ventilation, is provided by several engineering systems called ventilation systems. They consist of devices of various design, each of which performs its own function:

• air circulation - fans;
• air purification - filters of various purification classes;
• air flow control - air valves and dampers;
• heating and cooling of air - air heaters and air coolers;
• air distribution in the room - diffusers, diffusers and grilles;
• air supply and removal - air ducts;
• vibration reduction - flexible connectors and vibration isolators;
• noise reduction - silencers.

Ventilation of industrial premises

The measures include the correct control of industrial ventilation, compliance with the standard air velocities in the ducts to reduce the level of aerodynamic noise, adherence to manufacturing technology, installation, and sealing of air ducts to reduce leaks to a minimum. At present, industrial ventilation units are used for ventilation of industrial premises and the simultaneous organization of inflow and exhaust, allowing most of these functions to be performed using one unit - a supply and exhaust unit. The peculiarity of these units lies in the fact that their design combines the supply and exhaust units, which in turn allows you to get a more favorable price, use various recuperation systems and make the ventilation process of industrial premises more efficient.

Features:

By design, ventilation units are divided into:

• supply air;
• exhaust;
• supply and exhaust;
• recuperative (supply and exhaust with a recuperator).