urban energy transition research topics, methods and aims in architecture and urban planning

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1 urban energy transition research topics, methods and aims in architecture and urban planning Steffen Wurzbacher (Dipl. Ing. / M.Sc. Architect) Technische Universität Darmstadt

2

3 Department of design and energy efficiency (ee), Technische Universität Darmstadt Head: Prof. Manfred Hegger staff: 1 Professor 7 Reseachers & Teachers 6 student assistants > 266 projects

4 Content for today Background: transforming urban energy Practical application: 4 representative projects Outlook: what could it mean

5 Background: transforming urban energy

6 Status quo: Fossil energy systems still dominating.. Source: Wurzbacher

7 global warming up...however, dramatic change expected in the European energy mix en 100,00% 90,00% 80,00% 70,00% 60,00% 50,00% 40,00% 30,00% 20,00% 10,00% 0,00% share of renewable energies in the final energy consumption Zieldefinitionen zum Anteil erneuerbarer Energien am Endenergieverbrauch EU - Deutschland europäisches Klimaziel ( Maßnahme) Ziel 2050 (BRD) / 110,00% 100,00% 90,00% 80,00% 70,00% 60,00% EU 50,00% 40,00% Energiekonzept 30,00% BRD (2010) 20,00% 10,00% 0,00% Reductions of CO2 Emissions Zieldefinitionen der Reduktion von CO 2-Emissionen Bezugsjahr des Kyoto-Protokolls EU - Deutschland europäisches Klimaziel ( Maßnahme) Ziel 2050 (BRD) / EU Ziel 2050 (BRD) / Energiekonzept BRD (2010) Haushalte Source: FG ee / Greiner, Wurzbacher

8 Current energy demand in Germany Industry 28% Transportation 28% Residential 28% Commercial 15% >> 43% influenced by architecture >>> 72% influenced by the city Source: AG Energiebilanzen; URL: access:

9 Fossil vs. Renewable city Source: FG ee / Greiner, Wurzbacher

10 basis source in urban areas: solar energy Source: Renewable Energy Concepts: URL: access: 25th April 2015

11 Development of solar systems in Germany anually new installed capacity [MWp] cumulated installed capacity [GWp] Photovoltaics (all) Photovoltaics (0-40 kwp) Solar thermal Photovoltaics (all) Photovoltaics (0-40 kwp) Solar thermal Source: FG ee / BenefitE

12 Examples of building added photovoltaics First step: additive systems Technology drives architecture Source: FG ee

13 First step: simple solutions for existing buildings Current strategies polarise Source (right): Bauwelt.de; URL: access: Quelle (links): Faz.net; URL: access:

14 Focus on urban morphologies solar energy biomass Active roofs Heat demand networks synergies Source: FG ee / UrbanReNet

15 Project: UrbanReNet

16 Challenge: Heterogenic existing structures Source: Wurzbacher

17 Definition of energetic city types (EST) EST 1 small freestanding housing structures EST 2 row houses structures EST 3 line like structures with low density EST 4 line like structures with high density EST 5 block structures Source: FG ee / UrbanReNet

18 Definition of energetic city types (EST) EST 6 village like structures EST 7 inner city structures EST 8 historic city structures EST 9 office- and commercial structures EST 10 trading structures Source: FG ee / UrbanReNet

19 Definition of energetic city types (EST) EST 12 parks EST 13 cementeries EST 14 allotments Source: FG ee / UrbanReNet

20 Definition of typical EST -profiles Source: FG ee / UrbanReNet

21 Project: IBA Hamburg, Wilhelmsburg

22 Wilhelmsburg, Hamburg Source: IBA Hamburg GmbH, Energieatlas Zukunftskonzept Erneuerbares Wilhelmburg, S.201f

23 Classification of building types Source: IBA Hamburg GmbH, Energieatlas Zukunftskonzept Erneuerbares Wilhelmburg, S.51f

24 Calculation of demands & potentials for different clusters Source: IBA Hamburg GmbH, Energieatlas Zukunftskonzept Erneuerbares Wilhelmburg, S.65f

25 Development of energy concepts for each cluster Source: IBA Hamburg GmbH, Energieatlas Zukunftskonzept Erneuerbares Wilhelmburg, S.200ff

26 Project: Urban Energy Model - U.E.M.

27 Basis: 3D- model + solar simulation Source: p.a. / Wurzbacher

28 method Source: p.a. / Wurzbacher

29 Calculation of energy demands & potentials Source: p.a. / Wurzbacher

30 Project: Neckarbogen, Heilbronn

31 Development Neckarbogen, Heilbronn Source: Machleidt GmbH

32 Development Neckarbogen, Heilbronn Source: Machleidt GmbH

33 Analysis of all renewable potentials and demands Source: p.a. / Wurzbacher

34 Result: Integrated water & energy concept Source: p.a. / Wurzbacher

35 Result: Combined heat-power + photovoltaics Quartier Neckarbogen - Heilbronn PV Strom Wärme Biomasse aus Bioabfällen, Gartenabfällen und g Landschaftspflee E-Mobilität/ Carsharing als Stromspeicher BZ 670kW el regionale regenerative Stromerzeugung gebietsinterne Biomasseverwertung vorh. öffentliches Stromnetz vorh. öffentliches Gasnetz Source: p.a. / Wurzbacher

36 Result: Anticyclical electric power supply [MWh] u Strombereitstellung Stromertrag prodction - photovoltaics as PV Stromertrag production an s fuel BZ cells Strombed. demand ( utz+aux) Source: p.a. / Wurzbacher

37 Outlook

38 Main opportunities Energy providers & developers: Transition from fossil (centralized) to renewable (decentralized / semi centralized) energy systems. Use of local renewable sources. Technology companies: Improvement of energy efficiency in transformation, storage and transportation, development of new technical systems Urban planners & architects / Construction industry: creatively integrate renewable energy systems into architecture and urban planning, find innovative solutions for new and existing structures Transportation sector: develop new urban mobility concepts

39 Contact: Steffen Wurzbacher

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