Air-heating unit: types, characteristics, operating principle

If it is necessary to heat the premises of an impressive area, it is not always expedient to use traditional water systems, which contain radiators. Such projects are highly material-intensive and do not allow achieving the desired effect. When convection of air in a free state, heat will rush to the top, while from below a person will feel cool.

The air-heating unit is quite another matter. It works by 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 premises is very large. The air-heating unit can be used in a private house.

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

Additionally about the features of work

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

The main varieties

The described heaters can be classified into two categories:

• Type of heating element;
• Air consumption.

If a small air flow is required, an axial fan is traditionally used . If it is a question of more powerful heating systems which should serve extensive cases 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 according to the type of heat exchangers, they can be:

• Steam;
• Water;
• Electric.

The area of use of electric heaters is very limited, this is due to several reasons. The first of these is expressed in the lack of electrical power on the line. After all, one kilowatt of electricity is needed to get one kilowatt of heat. 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 this amount of energy.

Another difficulty is expressed in the control of heating, since operation at the maximum is not always required, but electric power units of high power can not be controlled smoothly. This requires expensive electrical equipment. This suggests that manufacturers often realize three- or two-stage heating. Such units are most often used in rooms with medium or small sizes.

Technical characteristics of the KKK 3-10 air heater

Calorifer KSK 3-10 is used in air heating, ventilation and air conditioning systems. Its capacity is 6,300 m³ / h. The volume or capacity of the heater is 7.1 liters. The thermal power is 139.6 kW. The weight of the device does not exceed 64 kg.

The surface area of the heat exchange is equivalent to 29.5 m ² . The dimensions along the contour are equal to 1227х575х180 mm. The KSK is manufactured according to state standards, and after completion of the production phase, the devices undergo a hydraulic leak test and strength test. Heat-emitting elements are made of a steel electrically welded pipe, the dimensions of which are 16x1.6 mm. Sometimes for this purpose a seamless steel seamless cold-deformed pipe is used, the dimensions of which are equal to 16x1.5 m. As an alternative solution, there is a rolled aluminum finning, whose nominal diameter is 39 mm.

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

The Volcano heating and air-conditioning unit is an equipment that integrates into the system in medium and large facilities. The device works in the air, which is in the room. It has found its application in heating systems:

• Warehouses;
• Workshops;
• Shops;
• Wholesale terminals;
• Garage complexes;
• Sports and entertainment facilities;
• Car-care centers.

Description VOLCANO VR

Poultry and livestock complexes are also equipped with such units. As their main advantages, one can single out the speed and efficiency of heating, low noise level during operation, the possibility of adjusting the parameters in accordance with the needs. Heating equipment can not disturb the aesthetics of the interior, it can be combined with almost any style solution. The use of such units saves money, because they are economical and consume little power. Such air heating units, the price of which is 25,200 rubles, can be used as a thermal curtain when entering through the opening gate.

Characteristics of a thermal fan of the brand Volcano

The axial fan from the manufacturer Volcano can be used for forced ventilation of air. The equipment is running at the expense of an electric motor whose power is 0.485 kW. The equipment is fenced off with a metal mesh to comply with safety regulations. The thermal fan has a heat exchanger, through which a stream of warm air flows. It is made of a copper coil, on which a collector and a block of ribs are installed. The first of them performs the function of tapping and supplying a cooled and hot medium.

If you need an assembly of not so impressive power, you should consider a single-row heat exchanger VR1. The more powerful units are designated by the VR2 labeling, they include a two-row heat exchanger. The thermal fan has blinds, through which the user can adjust the direction and range of air supply. They are fixed at different angles.