Net plus energy house, Leonberg / Germany - Warema

Net plus energy house, Leonberg / Germany
Dok.-Nr. 999578.07.2011en
Sun. Light. WAREMA.

A living concept for the future with a plus of energy
Object
Berghalde house, Leonberg-
Warmbronn / Germany
Principle
Univ. Prof. Dr.-Ing. M. N. Fisch, Karin Fisch
Architects
Berschneider + Berschneider GmbH
Architekten BDA + Innenarchitekten BDIA,
Pilsach, Neumarkt i.d.OPf. / Germany
Supporting structure
PG Kuhn & Löffelhardt, Sindelfingen /
Germany
Construction site management
W. Munz, Warmbronn / Germany
Monitoring energy management
Institute of Building Services and Energy
Design at the Technical University of
Brunswick / Germany
Living space
260 m 2
Completion
October 2010
From the outside, the Berghalde house looks pleasantly simple and
straightforward. The home was completed at the end of October 2010.
In contrast, the views of the surroundings from its exposed location on
a hillside near Stuttgart are breathtaking. However, the most particular
feature of the house is the integral planning concept. The result is a home
with visionary, integral energy design and excellent user comfort.
The first net plus energy house with
power load management and futureproof
electric vehicle system, the Berghalde
house sets standards for sustainable
building − combining energy-efficient
living and sophisticated architecture in a
perfectly executed overall structure.
From the outset, the architectonic considerations
for the position and shape of
the building, house automation and
energy management were carefully
attuned, so that they work very efficiently
together.
2
3

The pent roof slanted southwards,
following the 17° incline that the house is
built on, is covered by a photovoltaic
installation.
selective paint
Selective slats reflect radiation: only the
visible light is directed into the house; UV
and IR rays are absorbed by the slats and
emitted out of the building as long-wave
heat radiation.
black absorbent
paint
aluminium
slat
The architects and interior designers
Energy and house automation
household appliances and lighting. It is
Effective sun shading system
upper selective paint layer directs the
Sun shading system
Berschneider + Berschneider have or-
Important elements of the integral ener-
also used for storage in a stationary
The fact that the building is oriented to-
visible light of the solar spectrum deep
1 dim-out venetian blind E 73 A6 in
ganised the living space of 260 m 2 in a
gy design are, besides innovative auto-
battery unit and for charging the electric
wards the south is already one way of
into the building. In contrast to a stan-
the sleeping quarters
compact, two-storey structure, which
mation technology, the use of solar ener-
vehicles. Coordinated house automation
optimising passive solar yields and helps
dard coating, the selective slats not only
3 external venetian blinds E 80 A6
was integrated horizontally in the slope.
gy and a consistent reduction of the
and intelligent power load management
reduce the amount of power needed for
protect against overheating, but also
with selective slats
The natural incline is therefore used to
electricity and heating consumption. The
ensure that the renewable energy pro-
heating. It also means an optimal day-
allow more natural light to enter the
4 external venetian blinds E 100 AF
orient all living and common areas
structurally supreme building envelope
duced can be used immediately when it
light utilisation can further cut the energy
interior environment – approx. 30 %
with selective slats
southwards, with generous windows
in combination with a thermally effective
is produced. For instance, the heat pump
consumption. The WAREMA external
more daylight and 50 % less heat is
offering spectacular panoramic views.
interior mass and an electric heat pump
is only in use during the day and is
venetian blinds mounted on the large-
reflected into the house. The room thus
Effective sun shading and glare
All secondary areas, work areas and
make for very low end energy consump-
switched off at night. Some domestic
pane windows facing south are
becomes lighter but remains pleasantly
protection.
areas for home automation have been
tion.
appliances, such as the washing machi-
equipped with aluminium flat slats,
cool. Together with the automatic slat
Optimal utilisation of natural light
placed on the more closed northern
ne, dryer and dishwasher are also only
which reduce the incidence of light and
tracking based on the position of the sun,
deep into the room.
side of the structure. The seemingly
The power required for operating the
used in the day, when possible. Howe-
provide effective sun shading and glare
these blinds ensure excellent user com-
Reflection of visible light into the
frameless windows facing south create
building and for household uses is
ver, these are just a few of the measures
control. Thanks to the adjustable slat
fort and energy efficiency.
building, UV and IR rays are
an almost seamless transition between
produced by a photovoltaic installation
introduced in the building to save energy.
angle, views of the outside are not
absorbed.
the outdoor and indoor spaces and
on the pent roof which is slanted
obstructed in any way by the blinds.
Higher energy efficiency thanks
translate the clear architectural idiom of
southwards.
to lower cooling loads and less
the exterior to the indoor environment.
Builder and energy designer Prof. Dr. M.
Selective slats
use of artificial light.
The house can be entered either via a
Norbert Fisch placed particular impor-
The selective slats used in the Berghal-
More comfort through use of
direct staircase from the garage or stone
tance on achieving a high consumption
de house offer great advantages for the
natural light.
stairs in the garden, rising from the street
of self-produced power, with minimum
energy optimisation of a building: Their
below.
surpluses from the photovoltaic installa-
special coating is almost fully trans-
tion being fed into the public distribution
parent to infrared and UV rays, which are
For more information, please visit
grid. In the house, the system directly
absorbed by the black absorbent paint
www.warema.de
powers the heat pump, air conditioning,
layer underneath. At the same time, the
4
5

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
6
7

WAREMA Renkhoff SE · Hans-Wilhelm-Renkhoff-Straße 2 · 97828 Marktheidenfeld
www.warema.de · info@warema.de
Art.-Nr. 875834