novatlantis HarvardWS 20060427

Novatlantis • Swiss standards in practice: 

Novatlantis • Swiss standards in practice Novatlantis – sustainability at the Swiss ETH domain Harvard Vision 2020: A Bridge to Campus Sustainability WS April 28, 2006: “World’s best practice in sustainable building design” Bernd Kasemir, sustainserv Inc. Daniele Pandocchi, Novatlantis

World Average: 2000 Watt per capita: 

World Average: 2000 Watt per capita

Novatlantis • Path to the 2000-Watt Society: 

Novatlantis • Path to the 2000-Watt Society Sources: BFE, IPCC

Novatlantis • Five Project Areas: 

Novatlantis • Five Project Areas

Slide5: 

Sustainable Building Standards: US vs. CH United States: Rating system on: Sustainable sites Water efficiency Energy and atmosphere Materials and resources Indoor environmental quality Innovation and design process European example: Switzerland Performance standards on: Energy efficiency Renewable requirements Rating system on: Comfort & room air quality Light (daylight) Radiation & noise Building materials Manufacturing/treatment Pollutants Dismantling/maintenance introduced 2006

Slide6: 

Sustainable Building Standards: US vs. CH United States Four levels of LEED certification: Certified Level 26-32 points Silver Level 33-38 points Gold Level 39-51 points Platinum Level 52+ points (of 69 max.) Energy and LEED: Component focus Defined U- and R-Factors of construction components; allows comparison with reference building using components meeting mandatory standards No definition of characteristic energy values per unit area Switzerland Minergie Minergie-P Energy and Minergie (P): Performance focus Definition of characteristic energy values per unit area It is up to the architect or developer with which design and construction elements this performance is achieved

Slide7: 

Sustainable Building Standards United States LEED Commercial Buildings: Design must comply with ASHRAE (building component) standard 90.1-2004 Improvements: 1-10 points for energy performance 1-3 points for on site renewable energy Switzerland (office buildings) Minergie Requirements include: Annual heat demand ≤ 11602 Btu/ft2 (80% of mandatory Swiss SIA 380/1 standard) Airtight building envelope, controlled ventilation 20% of the hot water from renewable energy Extra costs: max. 10% Minergie-P Requirements include: Annual heat demand ≤ 3170 Btu/ft2 (20% of mandatory Swiss SIA 380/1 standard) Airtight building envelope (tested by Blower Door Test!) Controlled ventilation with heat recovery Efficient ( A labeled)* electric appliances (A+ for cooling devices) *In the EU, models are labeled A++ for the most efficient, then A+, A, B, C, D for subsequently less efficient models.

Slide8: 

Example: ROUGH Envelope Comparison Harvard Campus dorm (LEED certification planned) calculated for Swiss climate (Zurich): with the proposed U-Factors and fulfilling MINERGIE-P requirements Assumptions: climate of Zurich (yearly average: 8.5°C or 47.3°F) mechanical ventilation, heat recovery (80% efficiency) Results:

Slide9: 

ETHZ Science City - 2000 Watt Campus ETHZ Science City: university campus and urban development project at ETH Zurich University Campus and vibrant neighborhood Quality of life for 1’000 residents and 10'000 students Global knowledge and research network Strategic platform for university activities Goal: Minergie-P standard Goal: Zero CO2-emission buildings Sustainable mobility Source: ETH Zurich

Slide10: 

Triemli Hospital, Zurich first 2000 watt hospital worldwide Modernization and new bedding house MINERGIE-P for new building, MINERGIE for renovations Goal: Heat and electricity consumption reduction to 50% of current value Energy-efficient equipment, optimized daylight use, waste heat utilization Renewable energy (geothermal, biomass) Sustainable mobility aspects Other sustainability aspects (resources, building materials, green spaces, society) Triemli Hospital - 2000 Watt Campus Source: City of Zurich

Sustainable buildings: improving best practice: 

Sustainable buildings: improving best practice Standards like LEED or Minergie (-P) can help push the envelope of mainstream construction For that, the broad introduction of voluntary standards sets examples: US: LEED requirements e.g. for all buildings of UC Merced campus CH: “Sustainable Zurich” includes a city mandate for all new public construction to be by default at least Minergie compliant To mainstream sustainable construction, mutual learning is helpful. There is still a lack of comparative discussions of standards and (campus) programs.