Air heating units with electric heater. What is an air heating unit? What you need to know about air heating

In essence, these are the same fan heaters, but there are still some differences. So, the thermal power of these devices is much greater, in no comparison with two kilowatts of fan heaters. Also, these units are designed more for industrial premises, so the main thing in them is reliability and durability. External characteristics while being secondary.

Important! If you have time and desire, you can find a model that would look good at home or, for example, in the office. There are very attractive units made of high-strength plastic.

And now just a few words about the heat source.

Water heat exchanger

Air- heating units, using water heat exchangers, heat the air in the building as quickly as possible due to the heat carried by the circulating water. At the same time, the pipeline has fins inside, which increases heat transfer. When blowing, this heat transfer only increases. Having read all this, you can mistakenly confuse this unit with conventional fan coil units.

Electricity

Electrical devices of this kind, both structurally and functionally, are very close to household fan heaters - electricity heats the heat exchanger, to which air is adjusted by means of a fan. The shutters direct it further into desired part premises.

But there are certainly differences between them:

• Open-type spirals are practically not used. They can last for a relatively short time, and the dust will burn if it hits them.
• These units are designed to heat a large room. These are no longer household heaters, here the power is measured in tens of kilowatts.

The main advantages of air-heating units?

Indeed, in what? How are they better than, say, radiator wiring around the entire perimeter of the building or, for example, electric convectors? Let's get a look.

You may also be interested in our step-by-step instructions

Average cost of air heaters

What can be said is that their profitability significantly exceeds conventional water heating, while the power is only growing.

For example: air heating device ABO 42 models costs about 12000 rubles, while its thermal power is approximately 12 kilowatts. On the contrary, water system heating with a similar power value costs almost the same, of course, if you do not take into account the cost of installation.

But! The 104th model of the same AVO device, whose power already reaches 154 kW, costs today almost 53,000, while a hot water heating system with the same power is almost twice as expensive!

Where is this type of heating used?

Often, such heating can be found in the following places:

• In production shops.
• vegetable bases.
• Warehouses.
• Animal yards.
• Stores.
• Locations where grain is stored.

Important! Among other things, air-heating units can be installed not only indoors, but also in open spaces. This feature allows you to significantly increase the safety of employees of the enterprise.

Precautions for use

According to the safety precautions when handling such a heating system, it is strictly forbidden to use such units in rooms where flammable or explosive substances may be present in the air. In addition, this cannot be done if there is dust in the air that conducts electricity. Finally, when there is a possibility that toxic or aggressive substances will be released.

Also for correct use you need to know what a standard unit consists of.

1. Switchboard. An optional component of the system, mounted only at the request of the owner. It optimizes the temperature control procedure.
2. Radial fan.
3. Transition pipe.
4. Air blower.

As we can see, the design of the device contains a minimum of details, due to which its operation is simple. Actually, the same can be said about the installation, but about it a little later.

Recommendations for installing an air heating system?

Important! Installation should be carried out exclusively by those individuals who have received appropriate training and have documents regarding the fact that they can be allowed access to such equipment. If this is not observed, then there is a possibility of a risk to life.

And now - about the features of installation.

A short video review of the VOLCANO air unit

As a conclusion

As a result, I would like to note the fact that air-heating systems for heating a room can perform two important functions at once:

1. First of all, it is a direct "responsibility" of the system - space heating.
2. In addition, the unit can replace ventilation.

We believe that no one will argue with the fact that this prospect is more than attractive, since we can assume that a person will buy two devices for the price of one. If you are well versed in the heating equipment market, then you probably know that there are no such offers on it anymore.

An air-heating unit is, one might say, a large heater that runs on electricity. It first heats up, then distributes its heat throughout the room with the help of a fan, as well as guide blinds. An electric device is able to heat a large room in a matter of minutes. It can also be installed locally, for example, on production work in hangars or other similar premises.

The air-heating unit is made specifically to heat institutions. large sizes. It is used: in hangars, for installation in production workshops, in car repair shops, at a car wash, in garages, car dealerships, in warehouses, in shopping malls, in hypermarkets and supermarkets, various stores, meeting rooms, exhibition halls, farms, greenhouses, etc.

For such a heating system, you do not have to spend a lot Money, since air-heating units are easy to install and are (compared to other types of heating) inexpensive.

The design of electrical apparatus for heating

The air-heating unit has the following components:

• Axial fan;
• It is also provided electric heater;
• The case which has a polymeric covering.

The heater contains two thermostats that protect the machine from overheating. The first protection is an automatic restart. It will work on the air-heating unit if the temperature rises above 50 degrees. The heater control circuit is automatically closed after the thermostat has cooled down. The second protection is a manual restart. Such protection will work when the temperature rises above 90 degrees.

The fan of the air electric apparatus has asynchronous motor, which has an external rotor. Each motor has a built-in thermal protection that can automatically restart.

What must be done in order for the air-heating unit to work correctly and in safe mode:

• Heating power and temperature should be automatically adjusted;
• If the fan of the air heating system has stopped, or the air supply speed has decreased, then the power supply to the heater should be blocked. Also, the power supply should be blocked even when the built-in protection of thermostats against overheating is triggered;
• Should also be installed circuit breaker on the heater so that the voltage is supplied without problems. That operation must be selected according to the power of the heater itself;
• In order to be able to control the operating modes of an electric air vehicle, you can additionally purchase automation units (UET-14D, UET-30D).

Advantages of this heating system

Air-heating units have, of course, many advantages. And all thanks to the fact that they have great power, because of which huge rooms warm up very quickly.

So, the main advantages of these electrical devices:

• After turning on, these partings begin to work immediately with all their power, thanks to which the room warms up quickly;
• This system for heating has some inertia, due to which it is possible to use both the thermal regime and zonal space heating;
• Air-heating units have high heat output;
• This heating system is considered very economical, since when buying all necessary materials You won't spend as much as you would on standard system heating (gas, water).

Now in the market of equipment for heating there is an incredible number of electrical devices. They come in various capacities, so before buying, you should definitely consult with a professional so that he tells you which unit is better to take for a particular room. Also, some models may have modern technical indicators: touchscreen, liquid crystal display, on which you can see all the necessary information.

Electrical appliances with water heat exchanger

Devices with a water heat exchanger belong to the AOB series.

"> Air heating units with a water heat exchanger are needed in order to create recirculation of air heating in large rooms such as:

• Industrial building;
• Warehouses;
• Living spaces;
• commercial establishments.

Air heating units that have a water heat exchanger are needed only for huge rooms. The most important advantage of devices with a water heat exchanger is the rapid heating of either the entire room or part of it. In this case, the unit, which has a water heat exchanger, is installed locally.

It is also good that air units with a water heat exchanger are relatively inexpensive (compared to other heating systems that have water heat exchangers and not only), so you do not have to invest a lot of money on units with a water heat exchanger.

The air-heating unit, which has a water heat exchanger, has a high heat output. The water heat exchanger uses a powerful fan and a highly efficient heater, so the water system quickly heats the room.

Water heating units

This air-heating unit is designed to heat the room with a water heating system (the water coolant that heats the air distributes it evenly throughout the room with the help of a fan and guide blinds).

The fan speed on the air-heating unit, which has a water coolant, can be adjusted. Adjustment takes place with the help of a transformer regulator. If the speed of the fans on a water-cooled unit is reduced, then the air flow is reduced. There are also many options for how to regulate the water coolant.

How can I mount this air-heating unit:

• Air electric fan can be installed on mills (vertically);
• This hot water machine can also be installed on the ceiling (horizontally).

Advantages of an air unit that has a water coolant:

• The room warms up thanks to such an apparatus very quickly;
• Due to the low inertia of the heating system, it can be used both for heating the entire room, and for zone heating;
• The air-heating unit has a high heat output;
• This heating system will cost much less than other water heating systems for large rooms.

Heating units (manufactured by CJSC(since 16.01.2015 LLC) Т.С.Т.) are prefabricated installations that serve to transfer the thermal energy generated by them to heated residential and industrial premises. Our company specializes in the manufacture of heating units of the AO 2, AVO, STD-300 and SFOC types, the principle of operation of which is based on mechanical stimulation and air convection - the so-called air heating. According to the heat (energy) carrier used, they are divided into three types:electric, steam and water .

The principle of the device of the heating unit All of these types have much in common. Firstly Thisheater (air heater, heat exchanger). It is a conductor of heat. Represents a metal carcass with built-in heating elements. If steam is used as the primary heat transfer medium or hot water, that is metal tubes with spiral-rolled aluminum fins, inside the cavity of which the heat transfer source passes. Using electrical energy heating element a tubular electric heater finned with aluminum (heater or tenr) acts. Secondly, thisfan – axial or centrifugal (radial) depending on the typethermal installation.

Below are all models of air heating units produced by ZAO T.S.T. By clicking on the name of the installation at the beginning of the text, you can see it detailed description, drawings, specifications, overall dimensions, performance indicators, coolant flow rate, outlet air temperature and other detailed information.

Air heating units AO-2 heating recirculated, external or mixed air for heating buildings industrial and agricultural purposes, as well as in heating and ventilation systems buildings. According to the coolant, they are divided into two types. In the first case, air is heated using the heat of hot or superheated water -water heating unit , second dry (saturated) steam -steam heating unit . AO-2 units are used in areas with a temperate and cold climate and are placed in rooms with air environment containing dust and other solid impurities not more than 0.5 mg/m3 and not containing sticky substances and fibrous materials.

Water and steam air heating installations AO 2 can be used as the main or additional heat source. In rooms served central systems air conditioning, AO-2 can be used throughout the year as zone heaters. These thermal devices are sufficiently reliable and durable equipment capable of fully functioning for many years.

Our company produces 8 standard sizes of recirculation heating units AO-2(coolant water / steam, 3-x / 4-row execution - at the request of the customer), each of which differs from each other in technical and operational a tational characteristics, including thermal power and air capacity. Thanks to this, we can select for each consumer who has contacted us, equipment for heating industrial and industrial premises in strict accordance with all the requirements of future operation so that its use is as effective as possible in each specific case.

All heaters water, steam and electricheating units are divided into a certain number of sizes. Starting from a dimension of 570x570 mm and ending with 1400x1400 mm. Having chosen the heat exchanger of the required (for heating a specific area) heat output and heating surface, it remains to choose a fan suitable type, engine power and air performance. In combination with the installed components (diffuser, confuser, distribution shutters, vibration dampers, supporting welded frame), any model is assembled and takes the final form by installationair - heating installation.

Heating units STD-300(based on KSK/KPSk) are designed for air heating of industrial premises without the constant presence of people (or without a fixed working area) or with the constant presence of people with a room height of up to 6 m, as well as for emergency heating of industrial premises.
At the same time, they can be installed both on the floor of the building and hung on a column or over a ceiling.As a rule, their installation is carried out in floor version or on a solid foundation due to the fact that the weight of STD-300 heating units reaches 320-370 kg. The overall dimensions are also quite impressive - 1x1.4x1.5 m. But all these inconveniences are compensated by the high heat output and the volume of air heated per hour.

The principle of operation of the steam and water heating unit consists in the following: when the impeller of the axial fan rotates, the air is sucked from the room, heated, passing through the heaters, and directed through the blinds with rotary blades, which regulate the size and direction of the outlet section of the confuser, into the heated zone.

Recirculation thermal installations STD-300 are highly reliable and durable, they are able to work continuously for a long time. High performance and efficiency of their use are also advantages of the equipment of this category. Installation of STD-300 heating units is not difficult, and their use is quite simple and convenient. They are low maintenance and almost never fail.

Quite often we are asked to produce air- heating installation with technical specifications or overall dimensions different from those produced by our company. It could be custom sizes heater, on a previously purchased air apparatus and out of order. Or an installation with the same overall dimensions is required, but based on a centrifugal fan - for connection to air ducts. In all cases, experts technical department CJSC T.S.T. will help to calculate technical data, choose the most best option, accept order and as soon as possible execute it.

AVO air units intended for air heating and ventilation of buildings and structures in various industries, manufacturing and storage facilities. Depending on the size (air volume range from 2800 to 10500 m³/h), they have different power and, accordingly, different performance and can be used to maintain the desired temperature of the indoor air during the cold season.

Due to the increased cross-sectional area for the passage of the coolant (the carrier pipe of the heat-releasing element with a diameter of 22 mm), the AVO heating unit is more adapted to low temperatures North and Siberia, compared with other similar installations.This leads to the widespread use of such devices in regions with winter temperature from minus twenty and below degrees.

Air heaters AVO have two types of execution for the coolant. Based on TVV air heater (hot superheated water) - water heating unit and based on KP (dry saturated steam) - steam heating unit.

Wide application AVO air units are found not only in industry, but also in agriculture, for example on elevat about rax - for drying grain and in vegetable stores. In the premises of various livestock farms and poultry farms to maintain the temperature in the cold season, they are in addition to the systems central heating and supply ventilation.

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Units STD-300 (based on TVV/KP) it is recommended to use in industrial, public and administrative premises with air recirculation or combined with systems of general exchange supply ventilation and air conditioning. They are designed to create and maintain in buildings and structures the required temperature conditions. Hot water or steam can be used as a heat carrier, depending on the model of the heater.

Heating units STD-300 water and steam belong to a number of water-air and steam-air surface heat exchangers. Hot water supplied by the pump or steam flows inside the heater tubes, and with outside these finned tubes are washed by less heated air than the coolant. Air movement is continuously created axial fan. Due to the presence of a temperature difference, heat is transferred from a more heated coolant to air, which has a lower temperature and is evenly distributed overheated building.

Heating unit STD-300 (based on TVV/KP) finds the greatest application in regions with a cold climate, has an increased cross-sectional area for the passage of the coolant, which contributes to a longer period of maintaining stable thermal characteristics.

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Electric heaters for air heating SFOTS designed to create and maintain process heat in the ventilation heating systems buildings and premises for various purposes. They belong to the class of surface recirculating electric heating units. Reception and release of heat occurs by converting electrical energy into heat.

The main heating elements of electric heaters are ribbed heating elements installed in the section. Aluminum fins are used to increase the heat exchange surface.

Sections or heating modules are divided into seven standard sizes and have a digital name - from 16 to 250 (according to the installed total power of the heating elements).

It is not always effective to use traditional water systems for heating rooms with a large area, as practice shows. This is due to the fact that such projects are very, very material-intensive, and also do not allow to achieve the desired result. This is due to the fact that with free convection of air, heat immediately rushes up, while the climate below the room remains cool, which leads to overpayments and inefficient use of energy.

A completely different matter is an air-heating unit that works by pumping warm air in the right direction. But in order to do right choice, it is necessary to consider the main types of such devices.

The principle of heating a large room

Air heating systems are used in conditions industrial enterprises quite a long time ago. With the advent ventilation equipment These systems have performed well in office buildings, shopping malls, cinemas and other facilities where the floor area is large. These units and private houses did not bypass. They directly heat the air, which is the most simple option operation of such devices.

What else you need to know

The principle of operation is that, located behind the heating element, it blows the air that is taken in from the room. The air heater controls the temperature with a thermostat that stops heating when a certain value is reached. To heat people and equipment that are in the office or workshop, such devices are installed in different points at a height ranging from 3 to or below the ceiling. The jet is heated from top to bottom, which is provided by turning the blinds, they are installed in front of the heater. This effect can also be achieved due to the correct tilt of the body forward.

The main types of air units for heating

An electric heating unit can be classified according to two criteria: the type of heating element and the air flow. If average flow rates of heated air are needed, which should not move throughout the building, then axial fans are used. If we are talking about more powerful systems that are designed to serve entire buildings or several rooms, then they work due to

An air duct is fixed on the free side of the heat exchanger flange; it is necessary for heat distribution within the entire building or one room. To provide air heating inside the equipment, steam, water or electric heat exchangers are installed. The scope of use of electric heaters is limited, there are several explanations for this. The first is the lack electrical power on line. To obtain 1 kW of heat, 1 kW of electricity is required, which indicates that a hall of 500 m 2 will require a power equal to 50 kW. There are few networks that are designed to supply such an amount of energy.

For reference

Another difficulty is expressed in the control of heating, since operation at the maximum is not always required, while electrical units of large power are not smoothly regulated. This requires expensive equipment, so usually the devices have two or three stages of heating. Most often, such devices are used in rooms of medium or small sizes, since the maximum power of the devices in rare cases exceeds 30 kW.

Technical characteristics of VR1 and VR2 fan heaters

The Volcano fan heater is available for sale in two varieties, which were mentioned in the subheading. In the first case, the number of rows of the heater is limited to one unit, in the second - to two. Max Flow air per hour is 5500 and 5200 m 3, respectively. The heating power range in the first case varies from 10 to 30, in the second - from 30 to 60 kW.

The increase in air temperature is 18 and 33 °C, respectively. The maximum coolant temperature in both cases is 130 °C. The Volcano fan heater is also characterized by a maximum working pressure, for both models this parameter is 1.6 MPa. The maximum range of the air jet is also the same and is 25 m. In the heater, the volume of water is 1.7 and 3.1 dm, respectively. External thread has a diameter of ¾ inch. The air-heating unit Volcano VR1 weighs 29 kg without water, while the second of the described models has a mass of 32 kg. Engine power in both cases is 0.61 kW. The engine speed remains unchanged at 1310 rpm. The second model has a motor protection class within 54 IP.

The main advantages of air-heating units of the Vulkan brand

If you need a heating unit, then you can consider one of the above models as an option. The main advantages of these devices are:

• high efficiency of the fan heater;
• low operating costs;
• optimal range of air jet;
• reduced noise level;
• high thermal power;
• full regulation of technical parameters;
• simple and quick installation and installation.

With the help of this equipment you will be able to heat up, and further maintain in automatic mode desired level of air temperature in the room or building. In this case, the coolant will heat up to a mark of 90 ° C. The heating unit "Volcano" does not use air masses from the outside in its work, since it is designed to recirculate the air that is inside the building.

As additional feature it can be distinguished that the units have the ability to redistribute air masses, this is ensured by built-in axial fans and guide grilles in the form of blinds. With the help of the latter, flows can be directed to almost any part of a building or room.

Why choose heating units of the brand "Volcano"

The above-described wall-mounted heating unit allows you to use it for heating small and medium-sized rooms. This parameter can vary from 100 to 300 and from 300 to 500 m 2 . Install this equipment it is also possible in fairly large rooms, the area of ​​\u200b\u200bwhich varies from 800 to 1500 m 2. In this case, air heating will be carried out at a high speed, which proves cost-effectiveness and efficiency.

These fan heaters are excellent for heating large industrial and non-industrial premises such as factories, workshops, large department stores, factories and supermarkets. This includes car dealerships, wholesale warehouses, parking lots and small workshop-type buildings.

The air-heating unit described in the article, the characteristics of which were presented above, is equipped with automation that allows you to control the temperature in the room at the required level without human intervention. The use of automatic temperature control is recommended when it is necessary to heat wholesale rooms and warehouses where it is necessary to maintain optimal temperature, including in the absence of a person. In this case, the volume of the room will not matter.

Conclusion

The air type heating unit has many advantages. For example, installation is carried out quite quickly, because the equipment requires only two pipes to be connected: supply and return. These units are very economical, which is especially noticeable when compared with convection heating. The thing is that the heated air is distributed throughout the building as evenly as possible. If we consider convection systems in more detail, then during their operation the heat rises up, and the room remains cool from below.

If it is necessary to heat rooms of an impressive area, it is not always advisable to use traditional water systems, which include radiators. Such projects are characterized by high material consumption and do not allow achieving desired effect. With air convection in a free state, heat will rush upward, while from below a person will feel cool.

The air-heating unit is a completely different matter. It works on the principle of forced air injection in a certain direction. In order to become more familiar with such equipment, it is necessary to study the characteristics and main varieties of such devices.

Principle of operation

In the conditions of industrial enterprises, air heating systems have been used for a long time. After the invention of ventilation equipment, they were able to win well-deserved places in office buildings, shopping centers, cinemas, where the area of ​​\u200b\u200bthe premises is very large. The air-heating unit can be used in a private house.

Such devices directly heat the air, this principle of operation is the simplest option. The air-heating unit (AO) can be represented by an axial fan, which is located behind the heating element, blowing through it the air sucked in from the room.

More about the features of the work

The thermostat in the design controls the temperature, it turns off the heating if the value reaches a certain level. To heat the space, the described devices are installed at different points, it can be a space under the ceiling at a height of up to 4 m. During operation, the air-heating unit directs the air stream down, which is ensured by the position of the blinds. They are located in front of the heater. Flow direction warm air can also be guaranteed by tilting the body forward.

Main varieties

The described heaters can be classified into two categories:

• type of heating element;
• air consumption.

If low air consumption is required, it is traditionally used. If we are talking about more powerful heating systems that must serve large buildings or rooms, they are used centrifugal fans. In this case, an air duct is fixed to the heat exchanger flange on the free side, which distributes heat in one room or the whole structure.

The air-heating unit, as mentioned above, can be subdivided according to, they are:

• steam;
• water;
• electric.

The scope of use of electric heaters is very limited, this is due to several reasons. The first of them is expressed in the lack of electric power on the line. Indeed, to obtain one kilowatt of heat, one kilowatt of electricity is needed. Thus, for a room with an area of ​​​​500 m 2, a power of 50 kW will be required. There are few networks that are designed to supply such an amount of energy.

Another difficulty is expressed in the management of heating, since work at the maximum is not always required, but electrical units high power cannot be adjusted smoothly. This requires expensive electrical equipment. This suggests that manufacturers quite often implement three- or two-stage heating. Such units are most often used in rooms with medium or small sizes.

Technical characteristics of the heater KSK 3-10

KSK 3-10 heater is used in air heating, ventilation and air conditioning systems. Its capacity is 6300 m³/h. The volume or capacity of the air heater is 7.1 liters. Thermal power equal to 139.6 kW. The mass of the device does not exceed 64 kg.

The heat exchange surface area is equivalent to 29.5 m 2 . Dimensions along the contour are 1227x575x180 mm. KSK heater is manufactured according to state standards, and after the completion of the production stage, the devices are hydraulic test for tightness and strength. The heat-releasing elements are made of a steel electric-welded pipe, the dimensions of which are 16x1.6 mm. Sometimes, for this purpose, seamless seamless steel is used, the dimensions of which are 16x1.5 m. An alternative solution is rolled aluminum finning, nominal diameter which is 39 mm.

Scope of use of the air-heating unit brand VOLCANO VR

Volcano is an equipment that is integrated into the system in medium and large facilities. The device works on the air that is in the room. It has found its application in heating systems:

• storage facilities;
• workshops;
• shops;
• wholesale terminals;
• garage complexes;
• sports and entertainment facilities;
• car services.

Description of VOLCANO VR

Poultry and livestock complexes are also equipped with such units. Their main advantages are the speed and efficiency of heating, low noise level during operation, the ability to adjust the parameters in accordance with the needs. heating equipment not able to violate the aesthetics of the interior, it can be combined with almost any style decision. The use of such units allows you to save money, because they are economical and consume little electricity. Such air heating units, the price of which is 25,200 rubles, can be used as a thermal curtain at the entrance through the opening gate.

Characteristics of Volcano Brand Fan Heater

An axial fan from the manufacturer Volcano can be used for forced air ventilation. The equipment is operated by electric motor, whose power is 0.485 kW. Equipment fenced off metal mesh to comply with safety regulations. The heat fan has a heat exchanger through which a stream of warm air enters. It is made of a copper coil, on which a collector and a block of fins are installed. The first of them performs the function of removal and supply of cooled and hot medium.

If you need a unit of not so impressive power, then you should consider a single-row VR1 heat exchanger. More powerful units are marked VR2, they include a two-row heat exchanger. The heat fan has blinds, with which the user can adjust the direction and range of air supply. They are fixed at different angles.