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 highly material intensive and do not allow to achieve the desired effect. When convection of air in a free state, the heat will rush up, while from below the person will feel cool.
The air-heating unit is a completely different matter. It works on the principle of forced air in a certain direction. In order to get acquainted with such equipment closer, it is necessary to study the characteristics and main varieties of such devices.
Principle of operation
In industrial enterprises, air heating systems have been used for quite some time. After the invention of ventilation equipment, they were able to win well-deserved places in office buildings, shopping centers, cinemas, where the floor space is very large. The air-heating unit can be used in a private home.
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 drawn in from the room.
In addition about features of 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 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. The directivity of the warm air flow can also be guaranteed by tilting the housing forward.
Main varieties
The described heaters can be classified into two categories:
- type of heating element;
- air flow rate.
If necessary, small air flow traditionally used axial fan. If we are talking about more powerful heating systems, which should serve large buildings or rooms, centrifugal fans are used. 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 divided by the type of heat exchangers , they are:
The scope of use of electric heaters is very limited, due to several reasons. The first of them is expressed in the lack of electric power on the line. Indeed, to get 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 needed. There are few networks that are designed to supply such an amount of energy.
Another difficulty is expressed in the control of heating, since operation at maximum is not always required, but electric units of high power cannot be regulated 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 KSK 3-10 air heater
The KSK 3-10 air heater is used in air heating, ventilation and air conditioning systems. Its capacity is 6300 m³ / h. The volume or capacity of the heater is 7.1 liters. Thermal power is 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. The KSK air heater is manufactured according to state standards, and after the completion of the production phase, the devices pass a 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, a seamless cold-deformed seamless steel pipe is used for this , the dimensions of which are 16x1.5 m. As an alternative solution, a rolled aluminum fins with a nominal diameter of 39 mm.
Scope of use of the VOLCANO VR brand air-heating unit
The Volcano air-heating unit is an equipment that integrates into the system in medium and large sized facilities. The device works in the air, which is located indoors. 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 during operation, the ability to adjust parameters in accordance with needs. Heating equipment is not able to violate the aesthetics of the interior, it can be combined with almost any style decision. The use of such units can 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.
Volcano brand heat fan specifications
The axial fan from the manufacturer Volcano can be used for forced ventilation. The equipment operates due to an electric motor, the power of which is 0.485 kW. The equipment is fenced off with a metal mesh to comply with safety rules. 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 ribs are mounted. The first of them performs the function of draining and supplying chilled and hot medium.
If you need an aggregate of not so impressive power, then you should consider the VR1 single-row heat exchanger. More powerful units are indicated by the VR2 marking, they include a two-row heat exchanger. The heat fan has blinds, with which the user can adjust the direction and range of the air supply. They are fixed at different angles.