Using traditional water systems for heating rooms with a large area 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 achieving the proper result. This is due to the fact that with free convection of air, the heat immediately rises to the top, while the climate from the bottom of the room remains cool, which leads to overpayments and inefficient use of energy.
An entirely different matter is an air-heating unit that works by forcing warm air in the right direction. But in order to make the right choice, it is necessary to consider the main varieties of such devices.
The principle of heating a large room
Air heating systems have been used in industrial plants for quite some time. With the advent of ventilation equipment, these systems have proven themselves in office buildings, shopping centers, cinemas and other facilities where the area of the premises is large. These units and private houses did not pass by. They directly heat the air, which is the simplest option for such devices.
What else you need to know
The principle of operation is that an axial fan located behind the heating element blows air that is drawn from the room. The air-heating unit controls the temperature with a thermostat, which stops heating when a certain value is reached. To heat people and equipment located in the office or workshop, such devices are installed at different points at heights ranging from 3 to 4 m or under the ceiling. The jet is heated from top to bottom, which is ensured by the rotation of the blinds, they are installed in front of the heater. This effect can also be achieved thanks to the correct tilt of the case forward.
The main types of air units for heating
An electric heating unit can be classified according to two criteria: type of heating element and air flow. If average flow rates of heated air are required, which should not move throughout 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 due to centrifugal fans.
An air duct is fixed on the free side of the heat exchanger flange; it is necessary for heat distribution within the whole structure or one room. To ensure air heating, steam, water or electric heat exchangers are installed inside the equipment. The scope 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 required, this indicates that for a hall of 500 m 2, a power of 50 kW is required. 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 maximum is not always required, while large electrical units with power are not regulated smoothly. For this, expensive equipment is needed, so usually two or three-stage heating is present in the devices. Most often, such devices are used in rooms of medium or small sizes, since the maximum power of devices in rare cases exceeds 30 kW.
Technical characteristics of fan heaters of the VR1 and VR2 brands
The Volcano fan heater is available for sale in two varieties that have been mentioned in the subtitle. 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 coolant temperature in both cases is 130 ° C. The Volcano fan heater is also characterized by maximum operating pressure, for both models this parameter is 1.6 MPa. The maximum range of the air stream 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 equal to ¾ inch. The Volcano VR1 air-heating unit 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 brand "Volcano"
If you need a heating unit, then you can consider as an option one of the above models. The main advantages of these devices are:
- high efficiency fan heater;
- low operating costs;
- optimum range of a stream of air;
- reduced noise level;
- high thermal power;
- full regulation of technical parameters;
- simple and quick installation and installation.
With the help of this equipment you can heat up, and in the future, automatically maintain the required level of air temperature in the room or building. In this case, the coolant will heat up to a mark of 90 ° C. The Vulkan heating unit does not use outside air masses in its work, as it is designed to recirculate the air inside the building.
As an additional feature, it can be noted 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 the structure or room.
Why it is worth choosing heating units of the Vulkan brand
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 . You can install this equipment in large enough rooms, the area of which varies from 800 to 1500 m 2 . Air heating will be carried out at a high speed, which proves profitability 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. These include car dealerships, wholesale stores, car parks and small buildings, such as workshops.
The air-heating unit described in the article, the characteristics of which were presented above, is equipped with automation, which allows you to control the room temperature at the required level without human intervention. The use of automatic temperature control is recommended if it is necessary to heat wholesale rooms and warehouses where it is necessary to maintain the optimum temperature, including when there is no person. In this case, the volume of the room will not matter.
Conclusion
An air-type heating unit has many advantages. For example, installation is carried out quite quickly, because the equipment requires only two pipes: 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 evenly throughout the building. If we consider convection systems in more detail, then when they work, the heat rises up, and the bottom of the room remains cool.