Geothermal Cooling - Low Energy Cooling for Sustainable Buildings - page 98

Figure 4.15 Operating hours of ventilation system in SIC building in the year 2006. The night operating
times are due to heating demand
is reached in summer, when the ventilation system is switched on. If only the activated
floors are used for energy distribution, less heat is taken up from the building and the
heat delivery to the ground is reduced (see Figure 4.19).
The measured room and supply air temperatures were also used to validate a dy-
namic building simulation model of the seminar room. The main unknowns for the
simulation are the number of occupants in the room, which were estimated as a
function of the measured air volume flow, the shading factor of the external sun
Figure 4.16 Operating hours of floor cooling system in 2005