Univerity of Hawaii - World's Greenest Buildings Presentation

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Jerry gave this presentation for/at the University of Hawaii Dept. of Architecture in October 2013. The focus is on the design details of 15 of the world's greenest buildings and how architects need to consider energy use from the beginning of design.

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  • Green building vital in global carbon pictureGreen building growing rapidly in all sectorsGreen building business case is provenBUT, many green buildings are not performing as predictedBuilding energy & water performance reports vitally neededBuildings must eventually measuretotal carbon performanceZero-net-energy buildings feasible today
  • By reducing energy and water use as well as transportation energy use
  • More than 2 billion sq.ft. certified projects, more than 7 billion sq.ft. registered (maybe as much as 9 million sqft), as of September 1st.
  • 14% reduction in CO2, 2025 vs. 2005NPV of green building: $650 billion in U.S.5x to 10x cost premium2020 Prediction: Green buildings 95% of new constructionGreen retrofits are 75% of all retrofits
  • Financial/economic returnRisk mitigationMarketing/public relationsProductivity/health gainsRecruitment/retentionEnvironmental benefitsSustainability concerns
  • If building energy use is this important to our collective future, why not know what’s going on?
  • “What gets measured, gets managed”Without reports, we are flying blind/can’t fixWhy should governments put their faith in green building without performance reports?
  • Here’s the problem: quite a few green building projects are not meeting their projections.
  • The first major study of LEED projects gave this result.
  • Issue: Average savings is 35% vs. standard (Kats)BUT, about 25% actually underperformOne LEED Platinum building:Modeled at 61% savingsPerforms at 48% savingsUnderperforming buildings hurt validity of green building premise
  • EU Energy Performance in Buildings Directive: in force since 2010; here’s a UK example.
  • Importance of embodied energy; forms a barrier to further carbon reductions
  • Where SHOULD WE be aiming? I decided to find out!LEED Platinum (or equivalent)Built since 2003>50,000 sq.ft. (>5,000 sqm)Non-residential useMust provide energy data for one yearWater data, as available
  • European stretch goal: 100 kWh/sqm/a PRIMARY energy useEuropean site use median: 135 kWh/sq.m.; 43,000 EUIU.S. Average: 400 kWh/m2/a (2003)50% better than average still not good enough!75% (or more) required2030 Challenge (next slide)Solon: 34,000 Btu/sq.ft./year energy use
  • 2030 Challenge:DOE Annual Energy Outlook; Business As UsualAEO (expanded codes)AEO (best available technology)
  • Here is a chart of actual performance of 15/19 buildings (no labs/hospitals)Median use = 139 kWh/sq.m. (EUI = 44,000)
  • 2000 workers in bldg.; 700,000 sq.ft.Difficult climate:-35C to +35C (-31F – 95F)22-story solar chimney Passive solar designUrban regenerationGreen roofsPassive moisture control111 kWh/sqm/year;35,000 Btu/sq.ft./yr
  • Zero Net Energy Buildings are Feasible today; here’s an example:35,000 Btu/sq.ft./year (measured 2011)
  • 800 workers in bldg.; 360,000 sq.ft.Design/build; $254/sq.ft.Cold, dry climate - Passive solar design1600-kW Solar PVLabyrinth thermal massDaylighting designControl plug loads111 kWh/sqm/year;35,000 Btu/sq.ft./yr
  • Integrated Design Process Critical to SuccessStarted with the Procurement ProcessSet BSAGs – Big, Scary, Audacious Goals
  • 200,000-sq.ft., commercial officeVedic architectural designLEED-CS/CILong axis north/south, to maximize morning sunHVAC: Enthalpy wheel, frictionless chillerSpace H/C only 13% 41% less water use182 kWh/sq.m./year;58,000 Btu/sq.ft./yr
  • 56,000 sq.ft. academic building; narrow floorplateCold winters, humid summers100-KW BIPV system; 16% of annual electricity4 solar DHW collectorsGeothermal wells; four at 400’ deepRainwater harvesting91 kWh/sq.m./year; 29,000 Btu/sq.ft./yr
  • Double LEED Platinum, CS/CIFour stories commercial office, with17 stories rental apartmentsUnderfloor air w/chilled beamsDesigned to meet 2030 Challenge targets for 20104 turbines produce 1% of demandSolar water heaters provide 24%Operable windowsHarvested rainwater; 6500 sq.ft. green roofEnergy: 138 kWh/sq.m./year; 44,000 Btu/sq.ft.
  • Here is a chart of actual performance of 15 buildings (no labs/hospitals)Median use = 135 kWh/sq.m. (EUI = 43,000)
  • 75,000 sq.ft.98 kwh/sq.m.Waste heat recyclingNatural ventilation using atrium exhaustHeat recovery from computer serversWater-only (no chiller) cooling via trickle vents and heat exchangers
  • 74 kWh/sqm/yearLake water heating/coolingDouble skin façadeNatural ventilation500 employees, 210,000 sq.ft.
  • 92,000 sq.ft., 200677 kWp solar PV, 538 sq.ft. vacuum tube solar thermalPrimary/source energy demand: 103 kWh/sqm (with 23 kWh/sqm solar) with embodied energyAtrium buffer zoneActive louvers for shading
  • Dutch Energy Rating: A+++GreenCalc score: 1,005185,000 sq.ft.100% sustainable energy on siteEnergy positive buildingBio-diesel 300kW CHP plantOffice: 114 kWh/sq.m./year
  • Here is a chart of actual performance of 15 buildings (no labs/hospitals)Median use = 151 kWh/sq.m. (EUI = 44,000)
  • 50,000 sq.ft. renovationOn the equatorFocus on daylighting without heat gain41 kWh/sq.m. building energy use45 kWh/sq.m. Solar production
  • 816,000 sq.ft.59 kWh/sq.m.Corporate HQStack effect ventilationDaylighting integrationExterior louversVedic architecture
  • 77,000 sq.ft.98 kWh/sq.m.6-Star Green Star Office Design5-star NABERSAlmost $3/sq.ft. annual energy cost savingsAutomatic louvers on west façadeActive chilled beamsComprehensive staff/facilities training
  • National Cheng Kung University52,000 sq.ft.40 kWh/sq.m./year energy useForest land permanently set aside for meeting zero carbon goal
  • Every building should be beautifulEvery building LEED PlatinumEvery building should aim at “BSAGs”Achieve measured 35 to 45 kBtu/sq.ft. (EUI) performanceDon’t settle for less!BE WILLING to SAY: If it doesn’t perform, it’s not a green building!
  • 2030 Challenge:DOE Annual Energy Outlook; Business As UsualAEO (expanded codes)AEO (best available technology)
  • 420,000 sq.ft. building89 kWh/sq.m. electricity use100 kWh/sq.m. total carbonBest tall building in Europe 2011
  • This one progresses with clicks
  • ARE YOU WILLING to SAY: If it doesn’t perform, it’s not a green building?
  • Univerity of Hawaii - World's Greenest Buildings Presentation

    1. 1. The World’s Greenest Buildings: Promise vs Performance Jerry Yudelson Yudelson Associates
    2. 2. LEARNING OBJECTIVES: ©2013 Yudelson Associates WORLD’S GREENEST BUILDINGS 1. Get performance metrics for energy and water use. 2. Learn about design strategies for highperformance green buildings. 3. Understand approaches that produce high-performance results on conventional budgets. 4. Appreciate how aesthetic considerations complement low-energy designs in commercial buildings.
    3. 3. Testable Propositions (7) New York, NY
    4. 4. Green Building . . . Reduces Carbon
    5. 5. Green Building Growing Rapidly
    6. 6. Potential Impact Of Rapid Greening
    7. 7. Does Green Building Pay Off?
    8. 8. Business Case Proven
    9. 9. Business Case: Green Building FINANCIAL/ECONOMIC • energy/water savings • higher rents/occupancy • +net operating income • higher resale value • tax benefits ENVIRONMENTAL • sustainability • stormwater mgmt. • renewable energy • risk mitigation REPUTATIONAL • recruit/retain talent • increase stock value • marketing • public relations • investors/donors • value retention SOCIAL • health gains • employee morale • improved productivity
    10. 10. Energy Performance Reports Needed
    11. 11. Performance Reporting Informs One Shelley St. Sydney, Australia
    12. 12. Some Green Buildings Under-Performing . . . OHSU Center For Health & Healing Portland, OR
    13. 13. Energy Savings in LEED Buildings
    14. 14. What’s The Issue? Manitoba Hydro Place Winnipeg, Canada
    15. 15. Performance Counts!
    16. 16. Measuring Carbon
    17. 17. Europe: Measure Total Carbon Emissions Forum Chriesbach Dübendorf, Switzerland
    18. 18. World’s Greenest Buildings: Research One Bligh— Sydney, Australia
    19. 19. How Much Energy Should Buildings Use? Solon Corporate HQ, Berlin Zero-Net-Energy Building
    20. 20. Where Do We Need To Get To?
    21. 21. North American Buildings: LEED Platinum
    22. 22. Manitoba Hydro Place LEED Platinum Winnipeg, Canada
    23. 23. Manitoba Hydro Place LEED Platinum
    24. 24. Zero-Net-Energy Buildings NREL Research Support Facility I Golden, CO
    25. 25. NREL RSF I Golden, CO LEED Platinum
    26. 26. Mission Critical (3) Highly Desirable (15) Stretch (8) NREL Project Objectives
    27. 27. 2000 Tower Oaks Rockville, MD
    28. 28. 2000 Tower Oaks
    29. 29. Kroon Hall Yale University
    30. 30. Kroon Hall
    31. 31. Twelve West Double LEED Platinum Portland, OR
    32. 32. Twelve West
    33. 33. © 2013 Yudelson Associates
    34. 34. © 2013 Yudelson Associates Berlin, Germany DGNB Gold
    35. 35. © 2013 Yudelson Associates Männedorf, Switzerland Swiss Minergie Plus
    36. 36. © 2013 Yudelson Associates Dübendorf, Switzerland Swiss Minergie Plus
    37. 37. © 2013 Yudelson Associates Hoofddorp, The Netherlands LEED-CS Platinum
    38. 38. © 2013 Yudelson Associates
    39. 39. © 2013 Yudelson Associates Zero Energy Building Green Mark Platinum Singapore
    40. 40. © 2013 Yudelson Associates Pune, India LEED-NC Platinum GRIHA 5-star
    41. 41. © 2013 Yudelson Associates Perth, Australia 6-Star Green Star
    42. 42. © 2013 Yudelson Associates Tainan City, Taiwan LEED-NC Platinum EEWH Diamond
    43. 43. Where Do We Go From Here?
    44. 44. Where Do We Need To Get To?
    45. 45. © 2013 Yudelson Associates KfW Bank, Frankfurt, Germany
    46. 46. © 2013 Yudelson Associates Forum Chriesbach, Switzerland
    47. 47. © 2013 Yudelson Associates © 2013 Yudelson Associates
    48. 48. © 2013 Yudelson Associates
    49. 49. © 2013 Yudelson Associates * Edward Mazria, Architecture 2030 Founder http://therivardreport.com/conversation-architecture-2030-founder-ed-mazria/
    50. 50. If It Doesn’t Perform . . .
    51. 51. . . . It Can’t Be Green!
    52. 52. © 2013 Yudelson Associates
    53. 53. @jerryyudelson greenbuildconsult.com/blog © 2013 Yudelson Associates jerry@greenbuildconsult.com DOWNLOAD Slideshare.net/yudelson

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