Measurements of the internal environment parameters
The measurement of the internal environment parameters includes measurements of temperatures and relative humidity (Figure Temperature and humidity sensors for measuring of the indoor environment parameters). The indoor air temperature is monitored by two sensors – temperature sensor Pt1000 and temperature-humidity sensor HC2-S RH / T Rotronic. The sensors are placed in all rooms on the 2nd floor at the height of about 1.8 m above the floor (the height can be changed).
The data from the measuring sensors that are part of the measurement and control systém – for example the concentration of CO2 in individual rooms, lighting in individual rooms, data from the weather station located on the roof of the building, the air temperature in the ground heat exchanger, etc. – are used for research purposes as well.
A number of factors, such as external air temperature, heating, cooling, ventilation, blinds, etc., contribute to the temperature and relative humidity of the indoor air. Figure Effect of window shading on the progress of the internal air temperature shows the course of the internal air temperature in the same two rooms on the 1st floor, which vary according to different settings of shading blinds on the windows facing the south. The windows in room M204 were fully shaded (windows shaded from 100%), shading blinds were in horizontal position in room M203 (windows shaded from 0.4%). The effect of the shading led to a decrease of the internal temperature in the room by 2.5°C. The room was not provided with either forced or natural air exchange during the measurement.