ASSESSMENT OF THERMAL COMFORT IN A SCHOOL WITH AN AIR HEATING SYSTEM

The thermal comfort in a school with an air heating system was assessed experimentally.During representative coldest days in winter, the following microclimate parameters were measured: indoor and outdoor air temperature, supply air temperature, and the temperature of the inner surface of the outer wall.It was found that the air heating system allows maintaining the specified indoor air parameters in acceptable ranges comfortable for humans.The accuracy of maintaining the specified parameters is ensured by the quality of the ventilation system settings and automation.Even with a significantly large glazing area of the outer wall, with an air heating system, it is possible to maintain the temperature of the inner surface not only above the point and dew point temperature, but also at such a level that students sitting 0.5 m from the outer wall during classes do not feel the cold downward air flow.The occupancy of a room by people does not affect its thermal comfort, but a properly adjusted and configured air heating system is able to remove excess heat input by lowering the temperature of the supply air.