Small Scale Model of Heating, Ventilation and Air Conditioning System

The air quality from closed spaces is very important for people or for technological processes. The heating, ventilation and air conditioning installations ensure the maintenance of the air parameters in the rooms served within pre-established limits, throughout the year, regardless of the variation of meteorological factors, the degree of occupancy of the rooms or the development of production processes.The paper presents an automatic ventilation, heating and air conditioning system made on a small scale. The control of the installation is done with a Mega 2560 development system made around the Atmega 2560 microcontroller, which processes the information received from the DHT22 temperature and humidity sensor. The system can be used both for educational purposes for engineering students, but can be adapted for real practical applications.