Page 187 - AGC_EN_iBook

187
ThE BUILDING’S TEChNICaL FaCILITIES
INtRODuCtION
The choice and design of the building’s technical facilities were based on studies conducted on both the arrangement of space and energy ef ciency.
The building is made up of ve units, each with its own technical facilities:
– a three- oor gallery, also usable for external presentations; – the four two- oor of ce wings to the east of the gallery;
– the conference centre and its meeting rooms;
– the restaurant and kitchen to the west of the gallery;
– and, last but not least, the logistics area on the ground oor and basement level.
The energy necessary for heating and cooling the building is pro- duced on site from renewable sources in a zero-carbon manner, by means of:
– 1,392 m2 of roof-mounted photovoltaic panels;
– the seasonal storage of heat in the ground via 42 geothermal boreholes 75 m deep;
– the strict management of solar gains and arti cial lighting;
– the use of concrete’s thermal inertia for night cooling;
– energy recovery from exhaust air (the recovery rate1 is very high, exceeding 85%) and from the exhaust of the condensing boiler (whose useful output2 = 110% of LCV3);
– the sizing of the distribution networks for air, heat and cooling with a view to limiting distribution losses;
– the use of a computerized control system enabling the ef cient management of control parameters.
tHe LayOut OF tHe teCHNICaL FaCILItIeS IN tHe BuILDING
Connections to external networks
The connections to the networks of distribution companies (as well as the associated meters for water, gas, electricity, drinking water and the broadband network) and to the public sewerage network are located in service buildings and manholes in the north-east of
the site.They are linked to the basement of the main building via underground pipes and cables.
A reinforced concrete conduit 4 m2 in section and 78 m long links the fresh air intake, situated to the north-east of the building, to the ventilation equipment in the basement.
the technical rooms
The technical rooms located in the building’s basement are clus- tered around an open court on the ground- oor car park and back onto a distribution corridor linked to the north facade and to the two main vertical shafts.
The technical installations are thus clustered in the centre of the building, reducing the need for long distribution networks (as well as operating losses) and separating the technical areas from the of ce areas, thereby facilitating access and maintenance.
Distribution facilities
Electricity and water distribution from the basement technical rooms to the of ce areas occurs via the two main vertical shafts that end in the raised oor (86 cm headroom) on the rst oor of the gallery.The gallery’s lowered oor extends in the east and west wings to the vertical shafts, which are used to link up the second oor.
The shut-off (valves, motorized dampers) and control facilities for water distribution are also to be found in the vertical shafts and are accessible on each oor.The electricity and broadband distribution boards are located zone-by-zone in rooms backing onto the gallery. Distribution within the of ce areas takes place under the raised oor (60 cm removable square oor panels on 26 cm pedestals)
as well as in the drop ceilings in the toilets, the corridors between the partitioned rooms and the kitchen.
All installations are easily accessible between the pedestals holding up the oor.
In areas without drop ceilings, electricity for the lighting is distrib- uted via multi-pole conductor rails installed parallel to the north and south facades.