Controlled solar building ventilation DRY.HEAT
The DRY.HEAT system is used for ventilation and temperature control of buildings that are not occupied in winter. This enables preventing damages caused by moisture and freezing of buildings. The DRY.HEAT uses a principle of solar ventilation that reflects the current weather conditions. The ventilation runs during sunny days with an appropriate lower humidity and higher temperatures only. This ensures a higher overall temperature of the building and removes its moisture.
Air is heated either in the solar collector or in the rooms of the building (e.g. attic) and blown in the building. The controller monitors the parameters of inlet air (temperature, humidity) and the temperature of the walls inside the building. From these parameters the effectiveness of ventilation is evaluated. Ventilation is blocked under adverse conditions of temperature or humidity.
Description of the system
The DRY.HEAT system consists of two units, which communicate in the RF band 868/916MHz. A unit SOLAR is located at the entry of air. It measures the parameters of the inlet air. A unit ROOM is placed in the wettest room of the building. It measures the relevant parameters and sends the data via IQRF communication to the control unit for further processing. This unit measures and displays the temperature of the wall, dew point temperature outdoors, the temperature of supplied air, the relative humidity of the air and the supply voltage of the backup battery. The main benefit is maintaining a higher overall temperature and lower moisture in the building during the whole winter.
The most important benefit of using the IQRF technology
"We are very happy to have solved the communication without a need of cabling. We are surprised by the simplicity of implementing and using the IQRF wireless communication. Along with the cost effectiveness of this solution, IQRF turned out to be very useful for us." Jiří Brousil, DRY.HEAT
The DRY.HEAT system schematics
Unit ROOM in the wettest room of the building
Solar collector in the attic