Sustainable City of Zurich On the Way to the 2000-Watt Society LCM - PowerPoint PPT Presentation

Sustainable City of Zurich On the Way to the 2000-Watt Society LCM 2007 - From Analysis to Implementation Zurich, August 27 - 29, 2007 Dr. Annick Lalive d'Epinay Sustainable Construction, City of Zurich www.stadt-zuerich.ch/nachhaltiges-bauen

Building Department of Zurich "Amt für Hochbauten" 110 motivated employees are our greatest asset 4000 city-owned buildings with 8 billion US $ insured value are our sphere of activity 20 Mio. US $ we provide in services 330 Mio. US $ are our turnover Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 2

Introduction – 4000+1200 buildings are owned by the municipal City of Zurich. – 80% of the buildings were erected before 1980. – 400 million Swiss francs are invested annually by the City of Zurich. All new city-owned buildings are constructed to meet the 7 mile steps for energy and resource efficiency. Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 3

7 Mile Steps to Energy and Resource Efficient Building Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 4

MINERGIE Standard for New Building 1 Constructions School Building "Kügeliloo", Extension 2004 Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 5

MINERGIE Standard for Refurbishment 2 (>25% Energy Reference Area) Housing Development "Heumatt" 2005 Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 6

MINERGIE Standard for Lighting & 3 Efficient Appliances School Building "Apfelbaum" Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 7

Renewable Energy (>25% in New Constr) 4 Pilot & Demonstration Projects The Letzigrund stadium will be the first Zurich owned construction equipped with a wood pellet heating system. The city’s largest solar power system with 250 kW peak power will be on the roof, supplemented by 100m 2 solar collectors, providing pre-warming for hot water. New "Letzigrund" Stadium Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 8

Increased Requirements in Building 5 Ecology & Indoor Environmental Quality 91% Concrete with reused + recycled aggregate 45% Concrete aggregate in walls and ceilings 46% Aggregate from refuse dump excavated on site and processed in special soil washing plant to waterproof / prestressed concrete School Building "im Birch" Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 9

Environmental Sustainability as Decision- 6 Making Criteria in Architectural Competitions Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 10

Sustainable Facility Management 7 School Building materials 100% 90% Improvement due community operating energy 80% to refurbishment 70% 60% 50% design soil/landscape 40% 30% 20% 10% 0% utilisation location/infrastructure well being building status value operating costs Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 11

Result: 19 Architectural Competitions Amt für Hochbauten 1998 –2006 Energy Index of different housing developments, 1998 - 2006 70 2000 apartments 60 50 Minergie Index [kWh/m 2 ] MINERGIE 40 30 20 10 0 1998 2006 Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 12

City Council Program Sustainable City of Zurich – on the Way to the 2000-Watt-Society – The 2000-Watt-society is a vision: everybody in the world will be able to use the same amount of energy – High quality of life and high living standard for today‘s and future generations – A policy for the environment to reduce energy consumption and global warming in a long-term perspective (at least to 2050) Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 13

The Vision of the 2000-Watt-Society Development in energy requirements per person Watts per person Total Energy requirements Fossil energy Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 14

Legislature Goal Sustainable Zurich City – on the Way to the 2000-Watt-Society Development in energy requirements per person Crossroads for the 2000-watt-society Watts per person Reduction: Energy to 2000 W/person CO 2eq to 1 t/person Lighthouse project for 2000 Watt society Total Energy requirements Fossil energy Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 15

Buildings for the 2000-Watt-Society Energy Materials Electricity Mobility In the four aspects: Energy, Building Materials, Electricity and Mobility, increased efficiency must be achieved in building concepts. The MINERGIE standard is not good enough! Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 16

Experiences and Examples Minergie-P for new buildings Energy, Old peoples home 100 MJ/m2a embodied energy Material "Trotte" (SIA energy-efficiency-path) Energy & Material Efficiency is New patients building of the city hospital "Triemli" already predetermined in the competition project Very good products are not Electricity Office Building "Werd" always available. There is a Housing Development "Werdwies" need for innovation. Mobility This issue is rarely addressed Housing Development but has a big impact. "Sihlbogen" Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 17

Energy and Material Efficiency: Predetermined in the Architectural Competition! Architects and Planners should be able to actively improve their architectural projects during an architectural competition. We need a better understanding of the main factors which influence the energy consumption in a building. Competition-Calculation (WW-Kalkulation), using the same input data for estimates of • costs 1 Energy • embodied energy • operating energy 5 Materials Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 18

Competition Calculation "WW-Kalkulation" Method 1 Energy 5 Materials Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 19

Competition Calculation "WW-Kalkulation" Method 1 Energy 5 Materials Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 20

Competition Calculation "WW-Kalkulation" Results 1 Energy 5 Materials Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 21

Old Peoples Home "Trotte" compactness: The project will meet the best volume/ MINERGIE-P-ECO standard. surface-ratio well positioned The amount of embodied windows for optimised solar energy is actively reduced and gains calculated several times favourable during the planning process. construction and material choices Enzmann + Fischer AG 2nd place Edelmann Krell 3rd place Harder & Spreyermann Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 22

New Patients Building of City Hospital "Triemli" The project will meet the compactness: best volume/ MINERGIE-P standard surface-ratio most flexible room Renewable energy sources organisation (geothermic or wood) will be favourable used. The CO 2 reduction technical amounts to 80%. installation concept with system It will be completed in 2013. separation APH Architekten AG Atelier WW + KSP Engel und Zimmermann GmbH Weber + Hofer AG Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 23

Electricity There is a Need for Innovation! Housing Only energy efficient A class household appliances are purchased Development for municipally owned properties. "Werdwies" E.g.: Heat pump tumblers in a social housing development 4 Electricity Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 24

Electricity There is a Need for Innovation! Office Building "VZ Werd" A competition was launched to develop a highly energy efficient floor lamp for office buildings. www.topten.ch Electricity 4 Stadt Zürich LCM 2007 - From Analysis to Implementation Amt für Hochbauten August 27 - 29, 2007 Page 25