Net plus energy house, Leonberg / Germany - Warema

Even when the sun shading is active, the
views of the surroundings are completely
unobstructed, allowing occupants to fully
enjoy the panorama.
The fact that the building is oriented
towards the south optimises passive solar
yields. Add the high-quality glazing and
exterior sun shading slats and you get an
optimum utilisation of natural light.
Structural and energetic conside-
value is equivalent to 1. The value of the
losses and to achieve set targets. With
Intelligent interlinking
“The Berghalde house is a harmonious marriage of a purist architectural idiom and
rations
WAREMA products is clear: The sun
comprehensive monitoring, the current
In the net plus energy house, the energy
innovative energy technology. The aim of the planning project was to design and build
The extensive range of information and
shading system in the net plus energy
energy consumption is visible at all
system works hand in hand with the
a net plus energy house which, thanks to its photovoltaic installation on the roof, con-
advisory services from WAREMA en-
house reduces the energy input by the
times, raising awareness about how to
systems for recording, analysing, regula-
verts more solar energy into electricity in a year than it consumes. The great thermal
sure that the best sun shading solution
sun considerably and therefore helps to
act more energy-efficiently in daily life.
ting and storing power, even the use of
insulation in the building envelope and the excellent sun shading are prerequisites for
can be found for every project – in terms
achieve maximum energy efficiency
the electric vehicles is encompassed.
this concept. On the whole, we have created an environmentally friendly building of the
of heat reflection, utilising and directing
while maintaining excellent living comfort
In the Berghalde house, the available
future, which makes its occupants feel comfortable – it is a Smart Building for the
natural light, optimum comfort and sus-
in the house.
energy is used and consumed optimally.
What is more, in Leonberg, particular
planned Smart Grids.”
tainability.
The annual renewable output is enough
attention is given to the interface with
Univ. Prof. Dr.-Ing. M. N. Fisch,
In the case of the Berghalde house,
An optimised integral system
to charge and drive a small electric car
the public distribution grid. It has not
Director of EGS-Plan GmbH, Stuttgart, and Head of the Institute of Building Services
WAREMA helped making sure that the
All other system components have also
approx. 15,000 kilometres per year.
yet been adapted for the temporal
and Energy Design at the Technical University of Brunswick
strict requirements on energy use were
been selected with a view to optimising
fluctuations in load that occur when
satisfied already in the planning stage.
the use of energy. The system consists
renewable energy is input. The intelligent
The efficiency of the mounted sun
of an electric heat pump with an accu-
power load management ensures that
shading could therefore be determined
mulator tank in combination with three
as little as possible of the energy produ-
exactly through structural calculations
geothermal probes. A floor heating
ced in the house is fed to the public dis-
(as per DIN EN 13363). The WAREMA
system distributes the heat throughout
tribution grid.
external venetian blinds achieve an Fc
the house. The heat recovery ventilation
value of 0.09 to 0.15. The shading factor
system, just like all the other relevant
The Berghalde house is therefore an
FC indicates the relationship between
system functions, can be regulated as
energetic trailblazer, while providing a
the total solar energy transmittance
required by the occupants of the house
superb feel-good factor for its users.
through a window with and without sun
thanks to the building control system
shading. In other words, the smaller the
(BCS). Moreover, the innovative BCS
value, the more efficient is the sun
supports and monitors all indoor para-
shading, since less heat energy gets into
meters such as temperature, light and
the room; without sun shading, the FC
sun shading, in order to avoid energy
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