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Myths, Obstacles and Opportunities of Energy Efficiency in the Re-Use of Historic Buildings

Myths, Obstacles and Opportunities of Energy Efficiency in the Re-Use of Historic Buildings. Sean Denniston New Buildings Institute Project Analyst. Intro. National non-profit & think-tank working to improve the energy efficiency of commercial buildings. The Goal. Intro.

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Myths, Obstacles and Opportunities of Energy Efficiency in the Re-Use of Historic Buildings

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  1. Myths, Obstacles and Opportunities of Energy Efficiency in the Re-Use of Historic Buildings Sean Denniston New Buildings Institute Project Analyst

  2. Intro National non-profit & think-tank working to improve the energy efficiency of commercial buildings.

  3. The Goal Intro We don’t have time to give you a comprehensive guide to energy efficiency in historic preservation, but we can give you a framework and point you in the right direction.

  4. Myths

  5. Myth # 1: Myths All old buildings are inherently inefficient.

  6. Myths The Hidden Barn, Vancouver, WA The Home of NBI

  7. Myths • NBI Study of the measured performance of 100 LEED buildings.

  8. Myth # 2: Myths You have to replace those historic windows if you want to be energy efficient.

  9. Myths

  10. Myths

  11. Yearly energy saving (on one 3’ x 5’ window): 625,922 Btu Annual savings per window ( $0.95/therm): $9.65/ year _____________________________________________________ Simple payback ($400 installed / $9.65 ): 41½ years!! Myths “OLD” WOOD WINDOW/REPLACEMENT WINDOW ENERGY ANALYSIS. -- Keith Haberern

  12. Obstacles

  13. Ignorance Obstacles

  14. Ignorance Obstacles

  15. Ignorance Obstacles Minimum Bottom 35% Top 35% Maximum

  16. Ignorance Obstacles • Mechanical Contractors are trained to minimize comfort complaints, not energy.

  17. Ignorance Obstacles • Mechanical Contractors are trained to minimize comfort complaints, not energy. • Many contractors and mechanical engineers don’t understand the latest techniques and approaches.

  18. Ignorance Obstacles • Mechanical Contractors are trained to minimize comfort complaints, not energy. • Many contractors and mechanical engineers don’t understand the latest techniques and approaches. • Many consultants and mechanical engineers only understand how we build buildings now.

  19. The Code Obstacles

  20. The Code Obstacles • A building that meets code is not an efficient building.

  21. The Code Obstacles

  22. The Code Obstacles • A building that meets code is not an efficient building. • Code compliance can result in minimally efficient in-efficiency.

  23. Opportunities

  24. Passive Strategies Opportunities

  25. Passive Strategies Opportunities 1887: The cutting edge of Green Design.

  26. Passive Strategies Opportunities 1887: The cutting edge of Green Design.

  27. Passive Strategies Opportunities • Minimized Glazing Area • Thermal Mass • Daylighting • Natural Ventilation

  28. Commissioning Opportunities

  29. 100% 50% 0% -50% -100% Proposed Actual Commissioning Savings as % of Baseline Opportunities These buildings appear to use more energy than the code baseline!

  30. Embodied Energy Opportunities

  31. Embodied Energy Opportunities

  32. Embodied Energy Opportunities

  33. Embodied Energy Opportunities

  34. Major Lessons

  35. Many historic buildings were designed for energy efficiency, take advantage of it. Major Lessons

  36. Many historic buildings were designed for energy efficiency, take advantage of it. • Commissioning is vital. Major Lessons

  37. Many historic buildings were designed for energy efficiency, take advantage of it. • Commissioning is vital. • Expertise! Expertise! Expertise! Major Lessons

  38. Thank you New Buildings Institute Sean Denniston sean@newbuildings.org www.newbuildings.org www.advancedbuildings.net www.gettingto50.net

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