Local Renewables Freiburg 2007
Solar Info Center Freiburg
a business development model for cities
Rolf C. Buschmann
Prof.Aux.UCLV
solar info center
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Global energy demand
Source: IEA/World Energy Outlook
solar info center
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Global energy demand – rates of increase
Total energy demand
other sources of energy
solar info center
wind and solar
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Dresdner Bank, Freiburg
In the 70ies in Germany our people didn´t mind to heat all
over the whole year, and in summer time, they cooled the
buildings at the same time.
technical innovations:
• intelligent regulation systems, including an automatic
control sytem for venetian blinds
•Use of an adiabat cooling system, which works by
spraying water into the ventilation system to get a cooling
effect
•free cooling ventiliation during the night in some parts of
the building, which means to cool the building during the
summer by raising the ventilation with fresh, cool air from the
outside. To use this method you need heavy walls, ceilings
and other materials inside to have temperature stores like
cooling batteries in ice boxes.
total energy saving: about 60 % !!
solar info center
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Brauhaus Riegel
Building conception:
Reduction of the space heat requirement
Installation of a thermic protection insulating glazing in
the restaurant as well as an internal insulation in the bar
and guest area.
Improvement of the room air
Source ventilation: the fresh preheated supply air
expands within the base range into the guest area,
continues to warm up by internal heat loads and
presses up used air into the air exhaust duct.
> best air conditions with optimized change of air
Reduction of the ventilation losses
by ventilation heat recovery in the bar with a
recuperation grade of 95 %.
Reduction of the ventilation losses in the kitchen
by use of ventilation equipment with direct admission of
fresh air into the exhaust air caps:
> optimal kitchen ventilation with smallest losses of
energy over the exhaust air.
solar info center
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district heating systems in Freiburg, Germany
• cogeneration unit disposal gas
• wood-fired cogeneration plant
• fermentation of bio waste
biomass
• rape- cogeneration plant
• 14,4 Mio. kWh/Jahr production electricity
• wood-fired heating plants
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solar info center
Vortrag--EEQ
Umweltschutzamt der Stadt Freiburg
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indoor climatisation in the construction
solar info center
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cooling systems:
geothermic
adiabat
solar info center
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solarthermic process for cooling systems in buildings
cold
water
heat
thermic
cooling
process
air
condition
Dr. Hans-Martin Henning, Fraunhofer ISE
solar info center
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proposal solar cooling for drugstore in Mantanzas, Cuba
solar info center
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Drugstore, Mantanzas
solar info center
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Drugstore, Mantanzas
anual CO 2- emissions in kg
140.000
127.352
120.000
100.000
80.000
62.631
60.000
40.000
33.877
20.000
10.163
0
solar
combi-variation
solar info center
compressor
solar without
cooling tower
www.solar-info-center.de
Drugstore, Mantanzas
capital investment
600.000 €
500.000 €
80.000 €
80.000 €
400.000 €
25.000 €
28.000 €
80.000 €
25.000 €
300.000 €
270.000 €
0€ €
10.105
100.000 €
engineering
cooling
350.000 €
200.000 €
pilot costs
215.000 €
solar
187.100 €
110.000 €
110.000 €
80.000 €
0€
0€
solar
combivariation
compressor
solar info center
solar without
cooling tower
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solar info center
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Drugstore, Mantanzas
anual costs
60.000 €
50.000 €
40.000 €
30.000 €
10.750 €
7.600 €
10.291 €
9.842 €
running costs
5.324 €
20.012 €
8.600 €
energy costs
1.597 €
capital costs
20.000 €
29.641 €
33.055 €
10.000 €
20.305 €
25.427 €
0€
solar
combivariation
compressor
solar info center
solar without
cooling tower
www.solar-info-center.de
Medical Laboratory Building Renovation & Extension
Natural Heat Sources and Heat Sinks
Ground Utitlized by Bore-Hole Heat Exchangers
solar info center
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Medical Laboratory Building Renovation & Extension 2007
co² - emission [to/a]
gas
electricity
70,0
60,0
9,2
50,0
40,0
30,0
- 74 %
53,0
20,0
10,0
16,6
0,0
gas heating system
geothermal system
co²-emmissions for oil + gas based on german average, co²-
solar info center
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Medical Laboratory Building Renovation & Extension 2007
capital cost [€] - technical building equipment
400.000
350.000
300.000
250.000
200.000
352.352 €
150.000
100.000
206.869 €
50.000
0
geothermal system
gas heating system
solar info center
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Medical Laboratory Building Renovation & Extension 2007 - annual costs [€/a]
energy costs
maintenance & service
capital invest
80.000
70.000
60.000
- 40 %
50.000
40.000
49.957 €
10.631 €
30.000
20.000
10.000
7.699 €
5.274 €
22.726,7 €
13.343,1 €
0
gas heating system
geothermal system
solar info center
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Solar Info Center Freiburg
a business development model
solar info center
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What customers find...
technical competence
planning, consulting, project developing, product engineering
education & training
exhibition
Infotage 2007
e Lounge & Solar Casino
solar info center
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Energy concept
solar info center
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no Extra costs
•
The Solar Info Center is financed
on a private basis and has to
work economically independent.
•
Integral Planning saves
investment and operating costs.
•
Energy optimized building is
economic, environmentally
freindly and comfortable for the
user.
solar info center
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Day light and Shading
• Active simulation during planning
• bright office space through intelligent planning
• No overheating in summer because of systematic shading
systems
• The adjustment control of the blinds reacts on temperature as
well as individually for each office unit
Tageslichtsimulation
Verschattungsstudien
Tageslichtquotient in %
3,0
0,9
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Automatic Ventilation
• Exhaust air ventilation, in combination
with air intakes in the walls, assure
constant fresh air
• Cooling in summer through night air
cooling
• The massive walls store the cool
temperatures from night into the day
• No suspended ceilings
Abluftventilator
(2 je TH-Kern)
Büros 5.OG
Büros 4.OG
Büros 3.OG
Büros 2.OG
Büros 1.OG
solar info center
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Rainwater concept
•
•
The courtyard is full of plants. The whole rain water of the site can drain
away on the planted areas.
The draining water meets the ground and goes through pipes down
under the basement where it can drain away.
Belebte
Bodenschicht
Belebte Bodenschicht
Entwässerung UG
Grünfläche/Kies Belebte
Bodenschicht
Rigolenversickerung
solar info center
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Minimized Energy Consumption
•
20 cm thermal insulation on the
external walls and roof
•
Thermal insulating glazing,
U=1,2 W/m²K
•
The need of thermal heat of the
Solar Info Center is 29,8
kWh/m²a and about 30% below
the by law permitted need. It is a
so-called „3-Liter-House“.
solar info center
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Reduction of Emissions
•
There is a pipeline running through the site coming from the district
heating system network at the university hospital.
•
We use the pipeline and receive the heat from a newly installed heat
recovery system at this district heating system
•
The production of the thermal heat is emission-free by 100%.
solar info center
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Contracting
•
The Solar Info Center finances part of the
heat recovery system by contracting
•
The heat recovery system delivers more
energy than the Solar Info Center needs
•
No additional cost for user and investor
compared to conventional system because
of the reduced energy consumption of the
building.
solar info center
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Cooperation and competition
•
Cooperation between the different firms
in the SIC is everyday life
•
New common projects
•
Positive competition
•
Quick and efficient contact with experts
solar info center
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Innovation and established concepts
•
The building concept of the Solar Info Center combines mature
technologies with the state of the art
•
The applied concept reflects actual economic solutions but in some
parts of the building, research and development of new technologies
never stops (PV-Tec, Concentrix, PSE)
solar info center
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Solar Info Center GmbH
Center Service
•
The Center Service is the heart of the
Solar Info Center. It administers the
house, coordinates requests,
organises regular meetings and
encourages a productive coexistence
•
The Center Service takes care of
public relations and the marketing for
the center and the located firms.
solar info center
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Solar Info Center GmbH
Center Net
•
The Center Net is the communication platform at the Solar Info Center.
A place to share information about events, presentations and news.
solar info center
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Solar Info Center GmbH
offers Qualification
• Competition
• Common projects
• Centralized continuing
education
• Get together –personally &
electronically
• „creative corridor“ – casual
meetings in the house
solar info center
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Solar Info Center GmbH
networking
•
Center Service: central
marketing tool
•
Center Net: internal and external
communication
•
net-e: alliance to other national
and international Solar Info
Centers and Centers for
Renewable Energy
solar info center
www.solar-info-center.de
EnEd – International Education Center for Energy Solutions
Solar Info Center
• model for technology centers
• good connection for expertise in
renewable energies
Kasachstan
Asia east
• Südkorea
• Japan
Latin
America
• Chile
• Peru
• Brasilien
• Cuba
• DomRep
SIC
AREN
Asian Renewable Energy
Network
• Singapur
• Indonesien
• Philippinen
• Indien
solar info center
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Thank you very much !
solar info center
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