The Operating Principle of Suntherm Infrared Heating System
Heating with infrared panels is based radiation, and the panels must be placed on the ceiling. The infrared panels must be placed on the ceiling evenly, using the type and quantity selected taking the size, the clear height and features of the rooms into account in such a way that the 45° spread angle of the heating panels can be kept in all directions.
The panels placed on the ceiling emit radiation into the space, they warm up the walls and the objects in the room, which store heat, and secondarily they reradiate it toward the room. The temperature difference between the floor and the ceiling is 1 or maximum 2 °C; there is not any air motion in the rooms. Since the panels are light, they are not capable of storing heat, still the entire heating system have heat accumulation feature due to the fact that it warms up walls and objects. The thicker the walls are and the more furniture is in the rooms, the larger heat capacity and heat storage capacity the building has. Due to their small surface, the infrared panels are not suitable for convection heating, therefore it is not recommended to place them on sidewalls.
Convection heating means heat flow or convection heat transfer. It is a type of heat transfer when the heat transfer takes place as a result of changing in the place of the material carrying heat. Convection heaters must be placed on the sidewalls. The cold air is warmed up between the plates of the radiators placed on the sidewalls, then the warm air flows toward the ceiling due to its weight, inducing a convection air flow within the room. In the case of convection heating, it is only the air and not the objects that warm up. The temperature difference between the ceiling and the floor can be 7 to 8 °C.
|Convection heating||Radiation-based heating|
From the aspect of their use, buildings can be divided into two categories.
Buildings used as dwelling /houses, office rooms, flats etc./; buildings used seasonally /cottages, summer houses etc./.
- Buildings used permanently needs external insulation; such insulation increases the heat capacity / heat storage capacity/ of the buildings. The heat-up period will be long, because the surfaces storing heat must warm up. As soon as the surfaces storing heat have warmed up, they radiate heat toward the room. The heat-up period and the cool-down period are both long.
- Buildings used only rarely or for a short period of time require rapid heat-up; only the air is heated up and the heat is not stored, therefore such buildings need internal insulation. Rapid heat-up, quick cool-down.
The temperatures in the rooms can be controlled depending on their use, by means of a temperature controller. Thus it can be achieved that only the room you need consumes energy, and only when you need it.
Thanks to the heat storage feature of the heating system, programming of the temperature controller and the use of controlled current, the operation of the Suntherm infrared heating system can be characterized by exceptional energy efficiency. In the case of walls with heat loss of 0.6 to 0.7 W/m2K, and an external temperature of 0 to 5°C and an internal temperature of+ 20/+ 22/°C, the operating time is approx. 8 hours a day. The heat loss for a 30 cm brick wall with 1.5 cm plaster and with 5 cm dryvit layer is approx. 0.6 W/m2K .