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Energy Efficient Buildings: Issues, Research Opportunities

Energy Efficient Buildings: Issues, Research Opportunities. Leon Glicksman Building Technology Program January 27, 2005. US Energy Consumption. U.S. Energy Use. Transportation. Buildings. Industrial. U.S. Buildings. 38 % of total energy ( in UK 50 % ) 67 % of electricity

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Energy Efficient Buildings: Issues, Research Opportunities

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  1. Energy Efficient Buildings: Issues, Research Opportunities Leon Glicksman Building Technology Program January 27, 2005

  2. US Energy Consumption U.S. Energy Use Transportation Buildings Industrial

  3. U.S. Buildings • 38 % of total energy ( in UK 50 % ) • 67 % of electricity • 90% of time spent indoors • Major health problems: indoor climate

  4. 1Quad = 10 15 BTU

  5. Average Lifetime of Buildings

  6. United States Commercial Buildings

  7. Average Age of US Cars and Trucks US Dept of Transportation

  8. New Building Construction in Developing Countries China • ~ 10 M new residence units/year! • Commercial building rate ~ ∑ Western countries

  9. “Exudes Green”vs.Green Performance

  10. Heritage 2000 Artist’s Rendering

  11. Energy EfficientCopenhagen: Cooled only by Natural Ventilation

  12. Energy Efficient

  13. Not very energy efficient

  14. Building Technology Program • Joint Architecture/ ME / Civil • 5 Faculty • ~ 20 graduate students

  15. Energy Research Building Technology Group • Natural ventilation in commercial buildings • Air flow Prediction: scale models, numerical methods • Multiple Stable States • Integrated design: • design tools • Developing countries • Controls • Optimization • Remote monitoring • Advanced envelopes: double skin facades • Thermal insulation: fundamental mechanisms • Daylighting • Lifecycle evaluation: real options for flexible designs

  16. Double Skin Building Facades • Goals include • Energy conservation & ecological benefits • High level of thermal and visual comfort • Architectural transparency • Noise Reduction • Security • Natural Ventilation

  17. The German Towers Commerzbank, Frankfurt RWE Ag, Essen

  18. Natural Ventilated Building, Aldwyck Housing-Luton England

  19. Airflow pattern compared between simulation and visualization Visualized air flow direction

  20. Luton Air Model-MIT 10th Scale Model of Luton Building Airflow Measurements compare to building Airflow Visualization techniques

  21. MIT Design Advisor • Simple Tool • Use in the Conceptual Design Stage • Compare Scenarios • Real Time Calculations • Real Time Optimization

  22. Mechanical Pure natural Hybrid ventilation

  23. Mechanical Pure natural Hybrid ventilation

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