Most embedded in the floor convectors can detect so-called tangential fan (in the number of 1-4, depending on the length of the instrument). The design – a electric motor, to which one or both sides were attached long “pin” – the impeller. The device is installed parallel to the heat exchanger. Tangential fans create a flat uniform airflow large width, thus ensuring uniform air cooling heat exchanger.
Design enables clothe them in protective casing, which harbors from foreign objects, and set the input filter for air cleaning from coarse dust. The impeller, usually well-balanced and mounted on rubber amortizes.
Axial (axial) fans apparently do not differ from those used in personal computers. These devices have good moisture protection, in pairs (opposite each other) next to the heat exchanger and implement its local airflow and the intensification of heat exchange process. The lack of axial fans is that they are not able to provide even airflow heating element.
Centrifugal fans (one or two) installed in the face of the convector. Their advantage is the ability to create a powerful stream of air that allows you to organize intensive heating of the room. Externally, the radial fan is like a snail shell. With the help of air is blown into the base of the gutter and through the structural elements of the shell, served with a heat exchanger. The widespread use of radial fans, perhaps hampered by a sufficiently high level of aerodynamic noise generated by them (blades strongly “hit” on the air).
Note that the noise generated by fan convectors, for some customers is of paramount importance, especially when selecting devices for living rooms. For auditory stimuli have a negative, often depressing effect on the human nervous system. It must be borne in mind that the relationship between fan speed, heating power and the noise is not linear – noise equipment is growing much more sharply than the heating power. Therefore, manufacturing companies usually recommend pick up coil on the power developed by them in part (from 50 to 80%) performance fan.
At the maximum fan speed embedded convectors should be included only in cases where the need is really very quickly raise the temperature of air in the room.
Canada PEX Plumbing Supply Company does not recommend any place convectors with fans in the living room.
Unfortunately, the data cited by the manufacturer of noise for the average buyer is usually enough. In addition, the reported information is not always reliable, especially in the brochures. Everyone perceives the noise in their own way and in addition there are two identical convector (due to individual design features) may vary significantly from the noise.
Convectors for dry and wet rooms are equipped with fans at 24 V.
Office space heating. Adjustment convector with fan, usually carried out by changing the air supply fan in the housing unit (“adjustment of the air”). As a result, able to maintain the temperature of the air at a given level, depending on the method of flow control.
The easiest way to implement this method, including turning off the fan. In this case, a thermostat, located in the control point of the room and, depending on the temperature requirements, on and off the fan (fans) in the case of the convector.
Of course, “cut in” the fan on full power (for example, in the bedroom at night) can not always.
If the requirements on noise are critical, it is proposed to use a more advanced stage system regulation, allowing manually set the flow rate, and hence the intensity of heating the room. Such a system allows the inclusion of convection on the rate of pre-specified user (chosen by a shift lever). The structure of a three-stage regulator, in addition to the thermostat, located on the wall, are still auto-transformer and switch.
The third level – speed automatic regulation of speed. The system itself determines when a sufficiently low speed, and when an operating heating facilities must use increased. The most important advantage of this method of regulation is a significant decrease in temperature fluctuations, due to thermal inertia of the heating system.
Finally, the highest level of comfort system provides smooth control. The microprocessor control unit allows very precise to maintain the temperature of air in the room, avoiding over-heat and electrical energy. This microprocessor can keep track of not only the temperature of the air at the moment, but the temperature on the street, and many other parameters.
Such regulatory systems, the possibilities which could easily have written a separate article, supplied convectors companies MOHLENHOFF, KERMI and KAMPMANN.