Heating unit: types, technical characteristics

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

Quite another matter is the air-heating unit, which works by pumping warm air in the right direction. But in order to make the right choice, you need to consider the main types of such devices.

The principle of heating a large room

Air heating systems are used in the conditions of industrial enterprises for a rather long time. With the advent of ventilation equipment, these systems have proved themselves in office buildings, shopping centers, cinemas and other facilities where the area of premises is great. Do not ignore these units and private homes. They directly heat the air, which is the simplest version of the operation of such devices.

What else do I need to know?

The principle of operation is that the axial fan, located behind the heating element, purges the air that is drawn from the room. The air-heating unit controls the temperature with a thermostat, which stops the heating when a certain value is reached. To heat people and equipment that are in the office or shop, such devices are installed at different points at a height ranging from 3 to 4 m or under 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 by correctly tilting the body forward.

The main types of air units for heating

The electric heating unit can be classified according to two criteria: the type of heating element and the air flow rate. If averaged costs of heated air are required, which should not move around the building, 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 at the expense of centrifugal fans.

From the free side of the heat exchanger flange, an air duct is fixed, it is necessary for the distribution of heat within the whole building or one room. To ensure the heating of air inside the equipment, steam, water or electric heat exchangers are installed. The field of use of electric heaters is limited, there are several explanations for this. The first is the lack of electrical power on the line. To obtain 1 kW of heat, 1 kW of electricity is needed, this indicates that a capacity of 50 kW is required for a hall of 500 m2. There are few networks that are designed to feed this amount of energy.

For reference

Another difficulty is expressed in heating control, since operation at the maximum is not always required, while electrical assemblies large with power are not regulated smoothly. To do this, expensive equipment is needed, so usually two- or three-stage heating is present in the apparatus. Most often such devices are used in rooms of medium or small size, since the maximum capacity of the apparatus in rare cases exceeds 30 kW.

Technical characteristics of fan heaters of VR1 and VR2 grades

The fan heater Volcano is presented for sale in two varieties, which were mentioned in the subhead. In the first case, the number of rows of the heater is limited to one unit, in the second - to two. The maximum air flow per hour is 5500 and 5200 m ^3, respectively. The range of heating power 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 temperature of the coolant in both cases is 130 ° C. The fan heater Volcano is also characterized by the maximum working pressure, for both models this parameter is equal to 1.6 MPa. The maximum range of the air jet is also the same and is 25 m. In the heater, the water volume is 1.7 and 3.1 dm, respectively. The external thread has a diameter of ¾ inch. Air-heating unit Volcano VR1 weighs 29 kg without water, while the second of the described models has a mass of 32 kg. The 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 brand "Volcano"

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

• High efficiency fan heater;
• Low operating costs;
• Optimal range of the air stream;
• Reduced noise level;
• High thermal power;
• Complete regulation of technical parameters;
• Simple and quick installation and installation.

With the help of this equipment, you can heat up, and in the future maintain in the automatic mode the desired level of air temperature in the room or building. The coolant will then heat up to a mark of 90 ° C. The "Vulkan" heating unit does not use air masses in its work from outside, as it is intended for recirculation of air that is inside the building.

As an additional feature, one can distinguish that aggregates have the ability to redistribute air masses, this is provided by built-in axial fans and guiding grids in the form of a blind. With the help of the latter, flows can be sent to almost any part of the structure or room.

Why choose a heating unit brand "Volcano"

The above-described wall-mounted heating unit allows it to be used 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 can be in large enough rooms, the area of which varies from 800 to 1500 m ² . Heating of air will be carried out at a high speed, which proves efficiency and efficiency.

These fan heaters are excellent for heating large industrial and non-production premises by the type of factories, workshops, large department stores, factories and supermarkets. Here it is possible to carry auto shows, wholesale warehouses, parking places and small buildings by type of workshops.

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

Conclusion

The air-handling unit has many advantages. For example, the installation is quite fast, because the equipment requires only two pipes: feed 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, however, the convection systems are considered in more detail, then during their operation the heat rises to the top, and from below the room remains cool.