Introduction to Integrated Design of Sustainable Buildings

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Introduction to Integrated Design of
Sustainable Buildings

• Svend Svendsen
• Department of Civil Enginering
• Technical University of Denmark
• www.byg.dtu.dk, ss_at_byg.dtu.dk

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Integrated Design of Sustainable BuildingsWhy
and why now?

• Because the society needs
• sustainable development
• improved productivity in the building industry
• Because total energy is introduced now in
• the danish building code
• the EU-directive on energy performance of
  buildings

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Integrated Design of Sustainable BuildingsEPBD
Energy Performance of Buildings Directive

• Energy performance based on total energy
  delivered to the building except equipment
• Energy performance used in building code
• EPBD implemented 2006
• EPBD revised every 5 year
• Energy requirements as strong as possible only
  limited by the technology and the economy

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Integrated Design of Sustainable BuildingsWhat
is that?

• Objects
• building envelope and buildings services
• Performances
• indoor climate and energy use
• Economy
• initial and operating cost
• Optimization
• Minimized cost or price-performance-ratio

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Integrated Design of Sustainable Buildings
Objects

• Building envelope (and room enclosure)
• Shape and orientation of building
• Walls, base floor, roof
• Windows, curtain walls
• Solar shading and daylight control devices
• Interior walls, floor, roof

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Integrated Design of Sustainable Buildings
Objects

• Building Services (Installations)
• Heating system
• Ventilation system
• Cooling system
• Lighting system
• Domestic cold and hot water
• ...

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Integrated Design of Sustainable Buildings
Performances

• Indoor climate
• Thermal comfort
• Atmospheric
• Visual comfort (dayligth, view)
• Acoustic

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Integrated Design of Sustainable Buildings
Performances

• Energy use
• Heating
• Ventilation
• Lighting
• Cooling
• Equipment

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Integrated Design of Sustainable BuildingsEconomy

• Total cost
• Initial cost plus
• Operating cost (energy, cleaning, maintenance)
• Over the service life time or
• Over a period of evaluation ( 30 years) corrected
  for scrap value

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Integrated Design of Sustainable
BuildingsOptimization

• Minimize the total cost for a solution that
  fulfills the performance requirements
• Minimize the ratio between total cost and
  performance
• Cost of conserved energy (kr/kWh)
• (DK Energispareprisen)