Radiators with fan – characteristics
Fan heaters are a design which fully corresponds to the trends in the way of heating rooms. Wide range of heating power available to the user, short time of access to heat and the possibility of complete stoppage of heating are the most suitable for adapting the dynamics of central heating system operation to the dynamics of our heating season with a huge predominance of transition periods characterized by large daily variability of ambient temperature. Higher level of matching translates into the most optimal supply of heat energy and, subsequently, into heating economics and thermal comfort. The faster and easier it is for us to reach for heat and the less we have to pay for it, the more willing we are to use it all year round.
Don’t we have many days of cold in the summer? What characterizes different radiators? The total weight, the material from which they are made and the active surface area.
REGULUS®-system wall heaters:
- low water capacity,
- the lowest weight among all radiators (4-5 times less than the same size panel radiators),
- the largest exchange surface (about 50% larger than panel radiators),
- conductivity of the materials making up the radiator – water system made of copper – the conductivity of Cu in relation to iron is 5 x higher, lamellas made of aluminium – the conductivity of Al in relation to iron is almost 2.5 x higher…
- The mass of 1 m2 of regulus is about 1 kg, for comparison the mass of a floor radiator is on average 200 times higher (150-350 kg/m2)!
When it comes to interfering with the materials that make up the radiators, nothing more can be done than what is in the regulus. The greatest thermal resistance is created at the radiator-air interface. Thermal conductivity of air is thousands of times lower than copper. The high thermal resistance of air causes its high insulating capacity, which is a well-known fact. Heated air from the radiator must be moved as quickly as possible to be replaced by cooler air.
Methods of increasing the efficiency of radiators are developing their surface, increasing the temperature difference and thus convection (accelerating the flow of air through and around the radiator) and forcing the movement of air through the interior of the radiator. In low-temperature heating, the second option, i.e. increasing the temperature difference, falls out. Further increase of the exchange surface by thickening the Al. lamellas will cause too much wall resistance of the air flow through the radiator, which will hinder free convection.
The obvious choice of route for a decisive increase in heating power, especially in low-temperature heating conditions, are radiators with a fan. For such a radiator to be economical and comfortable, the fan built into it must be very quiet, very low power, and easy to remove. With the fan, depending on its type and mode of operation, the heating power of the radiator can be increased by 30-50%. Such radiators with fan are only available in REGULUS®-system offer. These are E-VENT series (230V fan), REVERS series (24V fan) and TOWER VENT series (narrow, tall design radiators).
Ze względu na wielość wariantów wysokości i szerokości, sposobów oraz rozstawów podejścia, regulusy to także doskonałe grzejniki modernizacyjne.
W regulusach materiał pośredniczący w wymianie ciepła jest najlepszy z możliwych (miedź i aluminium). Dynamika zmian w warstwie przekazywania ciepła z czynnika grzewczego do grzejnika jest znacznie korzystniejsza niż w grzejnikach zbudowanych z innych materiałów. Po to by korzyść ta była dobrze wykorzystana, należy sprawić by ogrzane powietrze przebywało w okolicach grzejnika jak najkrócej. Odpowiedzią na to wyzwanie stanowią właśnie grzejniki z wentylatorem. Parametry pracy zastosowanych w grzejnikach wentylatorów poprzecznych (moc, głośność, sposób sterowania) są bardzo przyjazne dla użytkownika.
To recap. What distinguishes regulus from other heaters:
Low total weight and large exchange area. The first feature is necessary to undertake the heating function with a low starting energy input. The second feature is a prerequisite for efficient low-temperature heating. It is obvious that high efficiency, short time of heat access, easy control of heat emission and thus thermal comfort mean lower costs of heat management and energy saving.
Ways of using our radiators:
- Standard heating – radiation + convection, any installation, all heat sources – all ranges of REGULUS-®-system production.
- Standard heating or with assisted air circulation using a quiet, crosswise fan (230V), located at the bottom of the radiator – power increase up to about 30% – E-VENT series.
- Standard heating, with the aid of air circulation or cooling – a series of REVERS – heaters similar to fan coil units, equipped with an almost silently operating crosswise fan (24V), of the power modulating 3-10V, the heating power increase up to about 40%. The operation of a group of heaters can be managed with a zone controller from the electrical switchgear level.
Radiators with a fan allow heating with more power and thus heating faster, without changing the size of the radiator and without increasing the temperature of the heating medium.
Radiator cooling – (option reserved for heat pump owners). It is possible through reversing on the heat pump (compressor + circulation pump) or GWC (circulation pump only). Depending on the type of ground, radiator cooling enables effective regeneration (heating) of the bed. An interesting cooling method available in some regions of the country is the use of a basket exchanger immersed in a well.
If, at the stage of construction, the central heating system is to be used as the central cooling system (with the help of fan coil units or reversible heaters REVERS), the system pipes should be properly insulated against retting. The wiring should be installed from the electrical switchboard near the radiators. More (link) When using reversible radiators installed as modernization radiators in the existing system, the temperature of the factor circulating in the system should not be lower than the temperature of the cooled rooms by more than 10 oC. To improve thermal comfort during hot summer days, it is sufficient to cool a selected room or all rooms by 2-4 °C. Radiator cooling with a fan has a huge advantage over cooling with an air conditioner because it is quiet, central (we can cover the entire building or selected rooms), healthy and safe. Cooling on any surface (floor, wall, ceiling) is not only inefficient (there is no effective cooling without forced air circulation) but also requires great attention to ensure that the dew point is not exceeded. Practice shows that repeated carelessness can even lead to destruction of the house…
With the increasing popularity of heat pumps and other low-temperature heat sources, the interest in the fan heater is clearly growing.