Assortment / System Description

Central applications
Automation station for facade control
24
A6V10866237_en--_b_08 263 | 275
24.4 Automation station for facade control
Central facade control is used to protect room users in a building against glare.
The function also include thermal protection for the rooms. The measured
global radiation is analyzed together with the present HVAC values in the room
to prevent the room from overheating with the help of facade products.
WS Weather station AS Room automation station
CAS Central automation station for
facade control
Figure: Plant diagram for fassade control automation station
The present solar angle can be calculated based on a building's geographical
position as well as date and time and use a solar sensor to evaluate solar
radiation. On facade segments (i.e. windows with the same conditions with
regard to anti-glare, thermal solar radiation, and brightness), this information
can be used to deploy blinds or lighting control to a defined position to prevent
any direct solar radiation from penetrating the room.
The position data for the facade are required to determine the solar radiation
angle on the facade. This permits deployment of blinds to the optimum position
for anti-glare protection. Each facade possesses the following parameters for
determining the position.
Description Name Default value
North latitude
- 90 ... 90
Latit 47.17
East longitude
- 180 ... 180
Lngit 8.52
Facade azimuth angle
- 360 ... 360
FcdAzmth 180 (south)
Facade angle of inclination
- 90 ... 90
FcdIncl 90 (vertical)
Anti-glare protection
and solar position
tracking
Calculation of the solar
angle as per the
position of the building