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 enterprises have to 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 basis of the work of such a project is 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 emanating from the production equipment.
2. Forced - ventilation system of premises, in which specialized equipment is used to circulate air masses. Such a 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 peculiarities of installation and operation, as well as advantages and disadvantages.

For example, the installation of 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 openings, 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 provide 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 an 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 dehumidify 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 capture and remove harmful substances, hazardous gases from the air in an industrial room, and clean air masses.
6. The ability to carry out installation 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, the local equipment is used for its intended purpose, if it is necessary to remove the exhaust air at the center of the 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 in 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 a blower, 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 the rarefied pressure;
• supply and exhaust - such schemes are the most effective, since in them both the flow of air 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 facility. 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 are used 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 is 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 in 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 the design of industrial ventilation

Whatever the ventilation duct and whatever classification of supply or exhaust equipment you use, when installing an air circulation system in an industrial enterprise, it is always necessary to take into account certain points and parameters.

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. You always need 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 high enough.

The ventilation calculation should include the following data:

• cross-section of incoming and outgoing air channels;
• area of ​​ventilation openings;
• the frequency of air exchange;
• estimated capacity of the equipment;
• the amount of materials required 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.

Modern ventilation systems and accessories for them - this is our profile, and we can offer our customers almost the entire line of moving and moving air devices and mechanisms produced in the world today (ventilo in Latin - to blow, wave). They are reliable, comfortable and beautiful, allowing you to fit the fans purchased from us into the style of any room.

You only need to know which one fan required from the point of view of the tasks that he will solve and the volume of the room where it is planned to be used. And then choose the equipment that suits you best from the extensive list of items.

For simple mixing of air within the same room, so that it does not stagnate, to create the effect of a blowing wind, we have a variety of blade and bladeless fans table, floor, wall and ceiling mount. All of them have an attractive design, powerful engines that run as quiet as possible, several operating speeds and are very inexpensive.

However, the real ventilation with ventilation, that is, pumping fresh air into the room and removing contaminated air with such devices is not carried out. For this you need exactly ventilation systems different power. We have them presented in all three types of their purpose: supply, exhaust, general exchange with a full cycle of all operations: drawing out old air, ejecting it and pumping fresh air.

We offer turnkey ventilation systems

We will tell and show you which ventilation systems can offer you "Vent-style" in terms of their functional features.

Forced ventilation designed to ensure the flow of fresh air into the room. Previously, natural ventilation was mainly used - due to the difference in air temperatures inside and outside, air exchange occurred. But such a ventilation system is too dependent on climatic conditions, and artificial ventilation carried out with the help of a fan, air heater, air ducts will always work.

Exhaust ventilation removes stale air from the room, allowing clean air to naturally penetrate into it. It is advisable to install exhaust ventilation in kitchens, hallways, bathrooms, that is, not living quarters, but household premises. When designing industrial premises, the exhaust ventilation can be equipped with the design of industrial premises, then the exhaust ventilation can be equipped with an additional filtration filtration system.

General ventilation today it is used most often, because it provides for air intake, its removal and the inflow of fresh air masses.

General exchange ventilation is completed, as a rule, with a set of filters that do not allow to pollute the atmosphere and clean the air supplied to the premises from dust particles, as well as devices for its additional heating or cooling.

Here you can pick up any ventilation system"Turnkey" with its full complement with any elements: filters and air ducts for round and rectangular ducts, transformer and seven-story speed controllers, valves, additional silencers.

We will help you to pick up and deliver to your destination any fans and ventilation systems in a set for residential, public and industrial premises, including volumetric exhaust units installed on the roofs of buildings.

In addition, we have a large selection of high-temperature fans that cool electronic devices, installations and equipment used in a variety of fields of activity - from home computers to the assembly workshops of factories. There are also special high-temperature duct fans for removing air from fireplaces and other structures.

Please note that all motors of our fans for domestic and industrial purposes are mounted in soundproofed cases and are equipped with overheating protection with an automatic restart function.
You can be sure that what we offer ventilation systems have certificates of conformity to the quality established by state standards and warranty periods of operation.

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 suspended particles and toxic fumes entering the air, which can negatively affect human health. In addition, the lack of fresh air reduces performance and the ability to endure physical activity.

Our advantages:

10 years of stable and successful work

More than 500,000 m2 completed

Why do we have the best price?

Minimum terms

100% quality control

5 years warranty for work performed

1500 m2 area of ​​our own warehouse

Solution

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 set 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 good health, 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-type options are also possible.

Industrial ventilation challenge

The main task of industrial ventilation is to ensure 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 workshops and ensuring the flow of 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 accompanied by a large release 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 used mainly 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 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 with a height of up to 6 meters, 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, moreover, 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 thermal flap, 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 level of the ceiling - optimizing its outflow.

The volume of circulated air is proportional to the area of ​​open 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 elements of the upper hood 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, one should take into account all the conditions in which the system will be operated, as well as the purpose of the room itself. The choice of equipment always depends on the explosion and fire hazard of the room.

As is known, general exchange and local ventilation is used for industrial premises. The first is responsible for air exchange and air purification of the entire room. But with the help of local suction, only local problems can be solved at 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 premises 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 baggage of knowledge and experience accumulated over the years.

Classification of industrial ventilation by type of action

There are different types industrial 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);
• the 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 more heated layers of air, rising upward, displace 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- a more efficient system, including a set of equipment and utilities. However, you have to pay for efficiency, as it is associated with 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 systems providing 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 cleanliness of the air in certain areas - for example, above 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 that can meet 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;
• construction drawings of the building, including general view and sections;
• the number of employees 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 standards for one person 20-60 m³ / h);
• assimilation of heat;
• assimilation of moisture;
• 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 can 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

Automation management of ventilation systems allows you to optimize the process and reduce operating costs. This approach allows you to minimize human participation in management and reduce 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 sanitary 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 manufactured products. The most effective measures include the use of air recovery systems, recirculation air and electric motors with no "dead zones".

The recuperation principle 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 in order 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 possibility of smooth speed control and with the absence of starting currents, which saves energy during startup and during operation.

Optimal air parameters for some production facilities for the conditions of work or storage of materials

Type of production and premises	Temperature	Relative humidity
Libraries, book depositories
Museum premises 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 Plates 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 models from wood
Production of matches
Drying matches
Printing production
Sheetfed offset printing workshop
Workshop for 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
Film Developers
Film cutting department

Ventilation equipment must be installed to create and maintain an optimal environment for efficient living. A modern ventilation system will provide filtered outdoor air in summer and heated air in winter. In addition, good ventilation will maintain a constant temperature and humidity, and control the level of concentration of substances harmful to health.

Ventilation types

There are several types of ventilation systems that can be grouped:

• By the way air moves (natural, mechanical)
• By the way of organizing air exchange (local, general)
• By the principle of operation (exhaust, supply)
• By design (monoblock, type-setting)
• By the presence of air ducts (duct, ductless)

Whichever system you choose, a prerequisite must be to maintain a balance - a simultaneous inflow of outside air and exhaust exhaust. If the inflow is insufficient, then the oxygen content will decrease, and the humidity and dust content will increase. If there is not enough hood, then polluted air, unpleasant odors, moisture and harmful substances will remain in the room.

Natural

Natural ventilation is simple, does not require energy consumption and sophisticated equipment. But its effectiveness depends on temperature, wind speed, etc.

Mechanical

Mechanical ventilation moves air over long distances. Basic equipment: fans, electric motors, air heaters, automation, dust collectors.

Supply systems

Supply systems are used in apartments and small spaces. They supply air after preconditioning, which includes cleaning, cooling and heating. They can be completed in a single body or consist of various elements:

• Air intake grille
• Air valve
• Filter
• Air heater or air heater
• Silencer
• Fan
• Air ducts
• Air distributors
• Regulation and automation systems

Exhaust systems

Exhaust systems remove polluted air from the room. They can consist of one exhaust fan, but when cleaning several rooms, an intake duct network is required. Supply and exhaust combinations allow you to supply and remove air at the same time. They are developed on the basis of ventilation units or consist of different elements.

Local and general

The fight against harmful substances in the indoor air is carried out using local or general ventilation.

General exchange fights harmful substances that are contained in the air of the entire room. When installing this type of ventilation, the volume of extract air is calculated so that the same amount of air is extracted from the room as is supplied to it. But if the air flow is not equal to the exhaust hood, the missing air volume is pumped from the nearby rooms or through the openings of the fences.

Local ventilation removes harmful substances from the room where they are generated.

The combined system, which includes general exchange and local exhaust systems, solves the ventilation problem as efficiently as possible.

Channel and channelless

Ducted and channelless ventilation systems are either a ducted system with a branched network of air ducts to move air, or a system with missing ducts (air ducts), which is used when installing a fan in a ceiling or wall, with natural ventilation.

The company "NIMAL" is engaged in the design and sale of equipment for the organization of industrial ventilation systems at facilities in Moscow. We work on the terms of an official dealer of well-known brands, we have our own production facilities and a staff of highly qualified specialists.

Features and types of systems

Ventilation systems at industrial enterprises are designed to solve complex problems. They provide large exhaust air extraction.

Distinguish between natural and forced ventilation. With natural air circulation through the ventilation ducts, the system works due to the difference in temperature and pressure inside and outside the premises. Projects under this scheme are developed taking into account the heat load from machine tools and equipment.

Forced ventilation means that special devices are used to circulate air. Efficiency does not depend on the weather, exhaust and air supply are provided by fans.

General exchange industrial ventilation with forced circulation is purchased to organize air exchange throughout the entire territory of the facility. It is suitable for rooms where hazardous substances are handled. When it is necessary to remove the emission of harmful substances in a certain place, local ventilation is used. Mixed-type installations perform air exchange, ventilation of workplaces.

According to the principle of air supply, the systems are divided into:

• supply air - a blower is used for the hood, the exhaust air comes out due to an increase in pressure;
• exhaust - the fan provides an outflow of air, the inflow of fresh air occurs due to the rarefied pressure;
• supply and exhaust - the most efficient designs, inflow and outflow is provided by specialized equipment;
• recirculating - the exhaust air is cleaned by filters and returned back, the system works in a closed circuit.

NIMAL specialists design and calculate ventilation taking into account the operating conditions of the facility, its area, configuration and type of equipment used.

We offer to buy industrial ventilation equipment for organizing effective air exchange at enterprises, we provide a range of services from system design to installation and commissioning at competitive prices in Moscow.

Equipment advantages

• Large coverage - the units use powerful fans to create an intense air flow.
• Functionality - the systems filter, humidify and dry the air. With proper design, it is possible to organize the air supply to the workplace.
• Creating a safe environment - the equipment removes hazardous gases, substances and purifies the air.
• Ease of installation - the devices can be installed in already constructed buildings.

Various types of ventilation equipment are on sale for a complete set of any production facilities. We will advise you on the best choice.