They are heaters that release heat to circulating air. The speed at which the thermal energy is transferred is greater the larger the surface that is in contact with the air, for this reason fins attached to the heaters are used.
- Operating temperature without forced ventilation below 60 ° C.
- Operating temperature with forced ventilation at the air outlet 100 ° C, with an air speed of 2m / s.
- Thermal energy transfer by convection.
- Hot air ducts.
- Room heaters with ventilation.
- Agro-industrial dryers.