workshop The Contribution of Renewable Heating and Cooling Technologies to Smart Cities Graz

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1 Folie 1 workshop The Contribution of Renewable Heating and Cooling Technologies to Smart Cities Graz Integration of solar thermal heat New renovation concepts New planning concept Smart City City of Graz, Austria Environmental Department DI Wolfgang Götzhaber DI Dr Werner Prutsch AEE Intec

2 Folie 2 City of Graz Inhabitants: Area: 128 km² Average height: 368 m Climate: temperate zone Location: in a basin University City, UNESCO World Heritage European Cultural Capital 2003 Graz is the economic, scientific, cultural centre for Austria s south-east 2 nd largest city in Austria

3 Folie 3 City of Graz Source: Graz Tourismus, Stadt Graz

4 Folie 4 The Geography makes the climate: Basin Inversions in winter Concentration of air pollutants Higher risk of respiratory deseases

5 Folie 5 Winter 88/89: Smog as a Starter 1988/89 Smog Winter Environmental Crash Need for Action a must Wide Cooperation

6 Folie 6 Graz Landmarks of a Sustainable City I 1989 Smog starts programs and projects (Ecoprofit,Ecodrive ) 1993 Greenpeace Award for Actionplans 1995 Local Agenda 21 decided in City Council; Ökostadt Energy Plan KEK 1996 and Sustainable City Award 2000 LA21-Evaluation and EXPO in Hannover 2002 Climate Star für Ökodrive 2003 Ecocity as main component of Capital of Culture EU

7 Folie 7 Ökostadt Action Plans Private households Public institutions Companies Agriculture Water and Nature Abandoned polluted areas Traffic Noise Energy, Atmosphere and Climate

8 Folie 8 Graz Landmarks of a Sustainable City II 2005 EU Project KAPA GS 135 busses + particle filters 2008 ÖKOPROFIT-Cityrunner starts operating 2008 Sustainable Energy Europe Award for ECOPROFIT 2008 Energy Trophy Award 2008 Energy Plan KEK 2020 decided in City Council 2009 New subsidies for green fleets 2010 Graz becomes Fairtrade- & Climate Protection City

9 Folie 9 Action programme Energy & Climate KEK 2020 City Council City Govern. Mun. Environment Committee Steeering Committee Representatives of City Government Co-ordination: Dep. for the Environment / Graz Energy Ageny Public Action-Team 1: Energy efficiency in municipal buildings and facilities Action-Team 2: Expansion district heating, solar energy and other renewables Action-Team 3: Energy Efficiency of residential buildings, in households & companies Action-Team 4: Energy efficient mobility and alternative fuels Specific implementation instruments and projects

10 Folie 10 Solar roof cadastre: Is my roof suitable for Solar installation? very good good

11 Folie 11 Energy Trophy + Automatic reading of electricity and heat meters Consideration of public holidays in programming of heating control Night and weekend setback of room temperature Time switches for hot water tanks, coffee dispensers etc. Self-monitoring of light, copier, printer and windows use... Savings of district heating and electricity through user behaviour

12 Folie 12 Information + communication = Folders Infopoint Actions Exhibitions Motivation

13 Folie 13 Solar Supported District Heating City of Graz 5 grid connected plants in operation (red dots) 13,000 m² solar collectors installed 9.1 MW th ~ 5,200 MWh th /a heat produced Further projects under development to double the size (yellow dots) Source: AEE Intec, Gleisdorf

14 Folie 14 Large-scale Systems in Operation Solar supported district heating in the City of Graz UPC Arena Graz-Liebenau: 1,407 m² (2002) roof mounted AEVG Graz: 4,960 m² ( ) roof mounted Water works Graz-Andritz: 3,855 m² ( ) ground mounted Additional solar thermal plants (sub grid-connection) Residential area Berliner Ring : 2,413 m² (2006) - roof mounted Residential area Grottenhofstraße : 500 m² (2007) - roof mounted Source: AEE Intec, Gleisdorf

15 Folie 15 UPC Arena Graz-Liebenau District heating First Austrian solar ESCO Commissioning: ,407 m² No storage ~500 MWh th /a Source: AEE Intec, Gleisdorf

16 Folie 16 AEVG Graz District heating Austrian s largest solar thermal plant Commissioning: 2008/2009 4,960 m² collectors ~ 2,000 MWh th /a Additionally planned: 2,000 m² Source: AEE Intec, Gleisdorf

17 Folie 17 Water works Graz-Andritz Combined space heating and district heating Commissioning: 2009/2010 3,855 m² ~ 1,600 MWh th /a Storage: 65 m³ Attached heat pump for increased efficiency planned Source: AEE Intec, Gleisdorf

18 Source: AEE Intec, Gleisdorf Folie 18 Berlinerring District heating + domestic hot water + heating 750 solar panels on 6 roofs Commissioning: ,413 m² ~ 930 MWh th /a Storage: 2 x 30 m³

19 Folie 19 Individual Housing Projects Solarstudy Eggenbergergürtel 40 Hybrid Modell District Heating + Solar-Warmwater by Energy Utility and Departments of Graz Source: EGG-Solarstudie-Eggenbergergürtel

20 Folie 20 Photovoltaic Plants in Graz Helmut List Concert Hall: 370 m² Solarzellen (2003) facade mounted kw(peak) ca.29,000 kwh p.a. Grazer Linien Garage: 1,100 m² (2010) roof mounted 150 kw(peak) ca.140,000 kwh p.a. Energie Steiermark: 550 m² (2010) facade + roof mounted Additional planned: University of Graz Airport Graz Source: Press, Internet

21 Folie 21 Overview: Residential area Dieselweg - Graz Idea: Fossile fuels are outdated. Source: AEE Intec, Gleisdorf 204 apartments

22 Folie 22 Innovative Renovation Procedures Residential area Dieselweg - Graz Located in the south of Graz, suburban area Source aerial pictures: GIS2 Steiermark; lay out : AEE Intec, Gleisdorf

23 Folie 23 Lifted by truck-mounted crane to facade Prefabricated solar facade modules Transported to building-site by low-loader Prefabrication in fabrication hall Source: AEE Intec, Gleisdorf Source pictures: GAP-solution

24 Folie 24 1 South oriented facade 2 of the long building row Solar thermal collectors were integrated instead of solar comb 2 Assembly by means of truck-mounted crane and additional mobile cranes 3 Connection of supply- and return line pipes was done afterwards. 4 5 Substructure on the existing facade filled with mineral wool Source: AEE Intec, Gleisdorf 6 Source 2-5: GAP-solution

25 Folie 25 Solar thermal collectors integrated in prefabricated facade modules Transport to building-site and lifted to facade Source: GAP-solution Assembly by means of truck-mounted crane and additional mobile cranes South oriented facade of the long building row Source: GAP-solution Source: AEE Intec, Gleisdorf

26 Folie 26 Dieselweg Integration of RES Solar thermal technology Carport roof with solar thermal collectors 3 m 2 collector area per apartment Module integrated facade collectors Solar thermal collectors onto the flat roofs of 5 single buildings Source: AEE Intec, Gleisdorf

27 Folie 27 Renovation Dieselweg Results Heating Demand: - 90% Reduced CO 2 -Emissions: -89% 700 t/ year 80 t/ year Reduced running costs: Heating (e.g: electric heaters) per m 2 /month /net* DHW per m 2 /month /net* Higher living comfort Source: AEE Intec, Gleisdorf * Source: GIWOG, calculated

28 Source: ECR Folie 28 ECR Energy City Graz-Reininghaus ECR-Area: 110 ha One of the largest innercity green field developments

29 Source: ECR Folie 29 - Frameworkplan Energy - Basis for future city development - projects - Anchoring in development agreements - Demonstration building projects as lighthouse projects - ECR as starting point for Smart Cities

30 Source: ECR Folie 30 ECR main targets Integrated district network: with buildings as energy supplier geothermal heat best possible building repartition (microclima) solar activation of roofs and facades use of process-heat feeding of the energy surplus in communal networks

31 Source: ECR Folie 31

32 Source: ECR Folie 32

33 Folie 33 ECG Energy City Graz -vision: development of an old city towards a SMART CITY - integrating existing structures - not one large site, but many interconnected projects The future of Graz is to be SMART CITY Source: ECR

34 Folie 34 See us at

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