solar info center www.solar-info-center.de
Solar Info Center Freiburg
a business development model for cities
Local Renewables Freiburg 2007
Rolf C. Buschmann Prof.Aux.UCLV
solar info center www.solar-info-center.de
Source: IEA/World Energy Outlook
Global energy demand
solar info center www.solar-info-center.de
Total energy demand
Global energy demand – rates of increase
other sources of energy wind and solar
solar info center www.solar-info-center.de
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 % !!
Dresdner Bank, Freiburg
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solar info center www.solar-info-center.de
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.
Brauhaus Riegel
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solar info center www.solar-info-center.de
biomass
• cogeneration unit disposal gas
• wood-fired cogeneration plant
• fermentation of bio waste
• rape- cogeneration plant
• 14,4 Mio. kWh/Jahr production electricity
• wood-fired heating plants
Vortrag--EEQUmweltschutzamt der Stadt FreiburgUmweltschutzamt der Stadt Freiburg
district heating systems in Freiburg, Germany
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solar info center www.solar-info-center.de
indoor climatisation in the construction
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solar info center www.solar-info-center.de
cooling systems:
adiabat
geothermic
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solar info center www.solar-info-center.de
thermiccoolingprocess
heat
coldwater
aircondition
solarthermic process for cooling systems in buildings
Dr. Hans-Martin Henning,
Fraunhofer ISE
www.solar-info-center.de
solar info center www.solar-info-center.de
proposal solar cooling for drugstore in Mantanzas, Cuba
solar info center www.solar-info-center.de
Drugstore, Mantanzas
solar info center www.solar-info-center.de
anual CO 2- emissions in kg
33.877
62.631
127.352
10.163
0
20.000
40.000
60.000
80.000
100.000
120.000
140.000
solar combi-variation compressor solar withoutcooling tower
Drugstore, Mantanzas
solar info center www.solar-info-center.de
capital investment
110.000 €80.000 €
0 €
110.000 €
270.000 € 350.000 €
187.100 €
215.000 €
28.000 €
25.000 €
10.105 €
25.000 €
80.000 €
80.000 €
80.000 €
0 €
0 €
100.000 €
200.000 €
300.000 €
400.000 €
500.000 €
600.000 €
solar combi-variation
compressor solar withoutcooling tower
pilot costs
engineering
cooling
solar
Drugstore, Mantanzas
solar info center www.solar-info-center.de
solar info center www.solar-info-center.de
anual costs
29.641 €33.055 €
20.305 €25.427 €
5.324 €
9.842 €
20.012 €
1.597 €
7.600 €
10.750 €10.291 €
8.600 €
0 €
10.000 €
20.000 €
30.000 €
40.000 €
50.000 €
60.000 €
solar combi-variation
compressor solar withoutcooling tower
running costs
energy costs
capital costs
Drugstore, Mantanzas
solar info center www.solar-info-center.de
Natural Heat Sources and Heat SinksGround Utitlized by Bore-Hole Heat Exchangers
Medical Laboratory Building Renovation & Extension
www.solar-info-center.de
solar info center www.solar-info-center.de
Medical Laboratory Building Renovation & Extension 2007co² - emission [to/a]
53,0
9,2
16,6
0,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
gas heating system geothermal system
gas electricity
co²-emmissions for oil + gas based on german average, co²-
- 74 %
solar info center www.solar-info-center.de
Medical Laboratory Building Renovation & Extension 2007capital cost [€] - technical building equipment
206.869 €
352.352 €
0
50.000
100.000
150.000
200.000
250.000
300.000
350.000
400.000
gas heating system geothermal system
solar info center www.solar-info-center.de
Medical Laboratory Building Renovation & Extension 2007 - annual costs [€/a]
13.343,1 €22.726,7 €
5.274 €
7.699 €
49.957 €
10.631 €
0
10.000
20.000
30.000
40.000
50.000
60.000
70.000
80.000
gas heating system geothermal system
energy costsmaintenance & servicecapital invest
- 40 %
solar info center www.solar-info-center.de
Solar Info Center Freiburg
a business development model
solar info center www.solar-info-center.de
What customers find...
technical competence
planning, consulting, project developing, product engineering
education & training
exhibition
e Lounge & Solar Casino Infotage 2007
solar info center www.solar-info-center.de
Energy concept
solar info center www.solar-info-center.de
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 www.solar-info-center.de
Day light and Shading
Tageslicht-quotient in %
3,0
0,9
Tageslichtsimulation Verschattungsstudien
• 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
solar info center www.solar-info-center.de
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
Büros 5.OG
Büros 4.OG
Büros 3.OG
Büros 2.OG
Büros 1.OG
Abluftventilator (2 je TH-Kern)
solar info center www.solar-info-center.de
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
RigolenversickerungEntwässerung UG
Belebte Bodenschicht
Grünfläche/Kies
Belebte Bodenschicht
solar info center www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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 www.solar-info-center.de
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
Latin America
Kasachstan
Asia east
SICAREN
Asian Renewable Energy Network
Solar Info Center
• model for technology centers• good connection for expertise in
renewable energies
• Chile• Peru• Brasilien• Cuba• DomRep
• Südkorea• Japan
• Singapur• Indonesien• Philippinen• Indien
solar info center www.solar-info-center.de
Thank you very much !
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