Net ZEB Case Studies - Modeling, Design, and Optimization of Net-Zero Energy Buildings - page 461

the roof to the building's interior) of the roof is 0.003 whereas the
PERENE 6) building performance standard requirement is 0.02.
The PV panels used are polycrystalline silicon. The installation is composed
of 14 inverters (each 3300 W). Table 7.20 summarizes the main
characteristics of the BIPV roof as well as the expected PV production as
it was calculated during the design using the PVsyst software. The roof is
rented by the university to an independent company who invested in the PV
panels.

Table 7.20 Characteristics of the BIPV roofs

South
Wing

North
Wing

Total

219 m 2 146 m 2 365 m 2 Area

Peak power 30,240 W 20,160 W 50,400 W

Azimuth 166°SW −14°NE

Tilt 9° 9°

Expected production (PVsyst
simulation)

44,612
kWh/yr

32,391
kWh/yr

77,003
kWh/yr

7.5.8 Description of the Design Process

This section provides a brief summary of the design process that was
followed on ENERPOS, which was started in 2004. New methods and tools
were tested during this design process.

7.5.8.1 Design Objectives and Importance of the Design Brief
The primary design objective of ENERPOS was to demonstrate the use of
passive design principles for hot climates and the use of simulation tools
and that it is feasible to reduce the energy use of the building by two-thirds,
compared to other office and university buildings on Reunion Island.
Designing a passive building also meant that a careful consideration was
paid to the thermal comfort of the occupants. Buildings in the French
tropical regions are often poorly designed where the active systems, such as
theair-conditioningandtheartificiallighting,tendstobelow-efficiencyand