Experimental study

The experiment carried out in the building from April 25th till May 19th 2003 is analysed.

Various weather data are measured by a local weather station situated close to th< building: global and diffuse horizontal radiation (W/m2), ambient temperature (°C), ai relative humidity (%) and wind velocity (m/s) and direction (°).

The variables recorded inside the building are: air temperature (°C) at different height and locations, air relative humidity (%), heat flux density leaving the room through th< ceiling, south, north and west wall (W/m2K). Description of the monitoring instruments used are summarised in Table 2.

The data-acquisition system sampling rate is 1 second for each channel. Then the dat are integrated over 10 minutes preceding the time of storage in file on the workstation har disk. During the monitoring period, the lighting, heating and cooling systems have beer turned off. During working hours the north window was 1 cm opened. Before use fo analysis the data has been cleaned and filtered by detecting outliers, missing observation and values with not physical signification (commonly due to noise). These data have been repair.