Www.solar-info-center.de solar info center Solar Info Center Freiburg a business development model for cities Local Renewables Freiburg 2007 Rolf C. Buschmann

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


Source: IEA/World Energy Outlook

Global energy demand


Total energy demand

Global energy demand – rates of increase

other sources of energy wind and solar


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

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



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



indoor climatisation in the construction



cooling systems:

adiabat

geothermic



thermiccoolingprocess

heat

coldwater

aircondition

solarthermic process for cooling systems in buildings

Dr. Hans-Martin Henning,

Fraunhofer ISE



proposal solar cooling for drugstore in Mantanzas, Cuba


Drugstore, Mantanzas


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



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




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



Natural Heat Sources and Heat SinksGround Utitlized by Bore-Hole Heat Exchangers

Medical Laboratory Building Renovation & Extension



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 %


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



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


energy costsmaintenance & servicecapital invest

- 40 %


Solar Info Center Freiburg

a business development model


What customers find...

technical competence

planning, consulting, project developing, product engineering

education & training

exhibition

e Lounge & Solar Casino Infotage 2007


Energy concept


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.


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


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)


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


Grünfläche/Kies



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“.


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%.


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.


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


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 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 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 GmbH offers Qualification

• Competition

• Common projects

• Centralized continuing education

• Get together –personally & electronically

• „creative corridor“ – casual meetings in the house


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


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


Thank you very much !

Documents

Www.solar-info-center.de solar info center Solar Info Center Freiburg a business development model for cities Local Renewables Freiburg 2007 Rolf C. Buschmann