The maps on the
right-hand side show the energetic
illuminance in Kwh/m²
received on the exterior envelop of building. Information about the
radiative climate (energy arriving on the site) is taken from climate database for
meteorological stations close to the site under study. Illuminances are
calculated using all the elements
of the site (trees, other facades, ground, etc.). The quantity of energy
receivde is the cumulated per period (day, season, year).
The images show
energetic illuminance on a site and on 2 facades (facade 3 west
oriented and facade 2 south oriented).
These maps allow to
visualise rapidly the energy situation and to answer the energy savings
questions like:
- Which zone of the
facade require a good thermal
insulation to avoid large losses (blue zones)?
-
Which zone of the facade may be considered as
an
energy captor (active or passive solar) and for which it may be
interesting to study protecting devices against summer overheat (red
zones) : to benefit but also avoir greenhouse effect?
These maps are also used in the security field via:
- the
highlighting of dark / unsecure zones.
In urban studies, these maps also allow:
-
scenarios comparisons.
- prospects optimisations.
As openings transmit both the energetic and luminous flux,
in urban
projects we simultaneously work on these 2 flux, as they impact
together the decisions for the definition of openings.
