Energy Forum 2013
Conference on Advanced building skins
6th November 2013, Bressanone (Italy)

Solar potential in urban ar...
Outlines

Introduction
Open questions and objectives

IEA Task 41 “Solar Energy and Architecture”
Aims and results of the ...
European directive on the energy
performance of buildings (EPBD)

20-20-20 plan - EU-27 2020:

In Europe the buildings pro...
The cities are responsible for…

75%

Energy consumed

80%

Emissions
…why not using the façades for producing the energy
From Urban sprawl…

Rio de janeiro
To Dense Urban City

Masdar City
IEA - SHC International research activities
The total solar energy
absorbed from the earth is equal:
3,850,000 EJ
The use ...
IEA - SHC International research activities
May 2013 - Apr 2017

http://task41.iea-shc.org/
May 2009 - Apr 2012

http://ta...
IEA Task 41 “Solar Energy and Architecture”

CAAD
Tools
Autocad
Google SketchUp
Revit Architecture
Archicad
Vectorworks

S...
Objectives of the research

1 – Solar optimization process of the building shape

2 – Solar optimized design: evaluation o...
Methodology of the solar optimization process
Applicability and the results in the use of the methods and tools for solar ...
Case study - Milan (Italy)

Source: Google Earth

Initial Scenario

?

Current Design Scenario

Does exist a solar optimiz...
Generative parametric solar optimization process
Generative parametric solar optimization process
Solar irradiation simulations – Building A isolated

Irrg = 2,881,181 kWh/yr

+ 18%
Solar irradiation simulations – Building B isolated

Irrg = 1,270,337 kWh/yr

+ 22%
Solar irradiation simulations - District analyses
Considering the surrounding (mutual reflections)

A

A

B

B

Design Sce...
Development a new urban design & simulation tool
A beta version of urban design and analysis tool controlled by devices
Conclusion

METHOD
A New Urban Planning approach for planners, architects and engineers
UTILITY
Use of the tool for suppor...
Gabriele Lobaccaro
NTNU - Norwegian of Science and Technology
gabriele.lobaccaro@ntnu.no
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Solar Potential in Urban Areas: a New Approach to Solar and Sustainable Urban Planning

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Solar Potential in Urban Areas: a New Approach to Solar and Sustainable Urban Planning

  1. 1. Energy Forum 2013 Conference on Advanced building skins 6th November 2013, Bressanone (Italy) Solar potential in urban areas: A new approach to solar and sustainable urban planning Gabriele Lobaccaro Postdoctoral Research Fellow
  2. 2. Outlines Introduction Open questions and objectives IEA Task 41 “Solar Energy and Architecture” Aims and results of the research conducted in Subtask B Theory, calculation and results on the case study Applicability and the results in the use of the methods and tools for solar design Development a new urban design & simulation tool A beta version of urban design and analysis tool controlled by devices Conclusion
  3. 3. European directive on the energy performance of buildings (EPBD) 20-20-20 plan - EU-27 2020: In Europe the buildings produce: 36% emissions CO2 40% energy consumptions Renewable Energy Sources
  4. 4. The cities are responsible for… 75% Energy consumed 80% Emissions
  5. 5. …why not using the façades for producing the energy
  6. 6. From Urban sprawl… Rio de janeiro
  7. 7. To Dense Urban City Masdar City
  8. 8. IEA - SHC International research activities The total solar energy absorbed from the earth is equal: 3,850,000 EJ The use of primary energy in 2009 was equal to: 510 EJ Electricity: 62EJ Energy Unused
  9. 9. IEA - SHC International research activities May 2013 - Apr 2017 http://task41.iea-shc.org/ May 2009 - Apr 2012 http://task51.iea-shc.org//
  10. 10. IEA Task 41 “Solar Energy and Architecture” CAAD Tools Autocad Google SketchUp Revit Architecture Archicad Vectorworks Simulation Tools Ecotect RETScreen Radiance Polysun PVsyst Conceptual phase 28% 25% 10% 10% 5% Preliminary design phase 35% 16% 12% 11% 6% Detailed design phase 45% 8% 14% 12% 7% Construction drawings phase 50% 5% 13% 13% 8% Conceptual phase 26% 16% 8% 7% 8% Preliminary design phase 33% 12% 9% 8% 4% Detailed design phase 22% 7% 10% 12% 7% Construction drawings phase 19% 5% 9% 19% 9%
  11. 11. Objectives of the research 1 – Solar optimization process of the building shape 2 – Solar optimized design: evaluation of solar irradiation in the isolated scenario 3 – Validation of the process: evaluation of solar irradiation in the district analysis
  12. 12. Methodology of the solar optimization process Applicability and the results in the use of the methods and tools for solar design
  13. 13. Case study - Milan (Italy) Source: Google Earth Initial Scenario ? Current Design Scenario Does exist a solar optimized scenario maintaining the constant volume
  14. 14. Generative parametric solar optimization process
  15. 15. Generative parametric solar optimization process
  16. 16. Solar irradiation simulations – Building A isolated Irrg = 2,881,181 kWh/yr + 18%
  17. 17. Solar irradiation simulations – Building B isolated Irrg = 1,270,337 kWh/yr + 22%
  18. 18. Solar irradiation simulations - District analyses Considering the surrounding (mutual reflections) A A B B Design Scenario + 12% - 8% Solar optimized design scenario Building A Building B (compared to the isolated volume) + 36% + 27%
  19. 19. Development a new urban design & simulation tool A beta version of urban design and analysis tool controlled by devices
  20. 20. Conclusion METHOD A New Urban Planning approach for planners, architects and engineers UTILITY Use of the tool for supporting design decisions during the early design phases ANALYSES Holistic design approach for sustainable and integrated design
  21. 21. Gabriele Lobaccaro NTNU - Norwegian of Science and Technology gabriele.lobaccaro@ntnu.no

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