The Gamba Acoustique(1) office headquarters
fully complies with the concept of Positive Energy Building-activity included (BEPOS-AC), as it produces
more energy than it consumes. The activity energy of
this office building added to the energy consumed by
the building equals a total energy of 50 to 55
kWh/m².year. With photovoltaic production (+/- 55
kWh/m².year) offsetting the total energy consumed, the
final BEPOS-AC objective is reached.
The contracting authority, René Gamba, architects
Philippe Vigneu and Gilles Fauré, and the manager of
the thermal design office Technisphère, intentionally
played the thermal inertia card: North-South facing, absence
of thermal break in the exterior cellular concrete
envelope insulated by the exterior, large glass surfaces,
bare concrete floor slabs, etc.
An optimum compromise was obtained between
good insulation, good ventilation and limited consumption.
All services are top-of-the-range yet are obtained
using standard solutions, as shown by the example of
SOLEAL aluminium joinery with double glazing that provides
low emissivity and a good light transmission index.
The building's scenario study, consideration of user
requirements and research into passive performance,
also have an impact on user comfort, with in particular
optimum air and light quality.
(1) Gamba Acoustique is an engineering, research and development and
acoustic and vibration training office.
|
SOLEAL motorised Apparent opening
sashes. The one on the left is equipped with
a timer to provide ventilation at night. |
The constant underground temperature of 19° is
obtained by a heat pump connected to 8 x 100m
boreholes and diffused in floating floors. Sloping
roof panels and brise-soleils support 355m² of
photovoltaic cells. |