Human side nze 042613

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This is a presentation from USGBC Colorado's Rocky Mountain Green Conference. The featured project is the National Renewable Energy Laboratory's Research Support Facility and the groundbreaking occupant engagement strategies that helped the building achieve net zero energy.

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Human side nze 042613

  1. 1. Tom Hootman, AIA, LEED AP BD+C RNL, Director of Sustainability Shanti Pless, LEED AP NREL, Commercial Buildings Research Group Michelle Slovensky, LEED AP BD+C NREL, Senior Sustainability Manager
  2. 2. Heating 36.2% Cooling 5.3% Fans 10.6% Pumps 1.5% DHW 2.8% Lighting 21.9% Equipment 21.7% RSF Baseline Model Without Data Center
  3. 3. Radiant Ceilings Thermal Mass Walls Operable Windows Underfloor Ventilation
  4. 4. 6 watt task light 50 fc Ambient daylight Ambient lighting with daylight sensors for 25 fc
  5. 5. Concrete Walls No Ceiling Minimal Walls and Partitions
  6. 6. 80% 10%
  7. 7. MANAGER TRAINING NEWSLETTER MOVE MEETINGS STAFF OPEN HOUSE RSF EMAIL BOX WEB PAGE
  8. 8. You have switches – use them If you open a window – close it If you are stuffy – open your window If you have glare – enable electrochromics Turn on your power strip in the morning
  9. 9. What is the occupant’s role?
  10. 10. Buildings are for people, so where are they in the feedback loop?
  11. 11. The Building Agent app enables occupants to quantify and communicate their comfort levels to the building.
  12. 12. • Four of the six thermal comfort factors defined by ASHRAE Standard 55 (ASHRAE 2004) are addressed in the BA feedback interface: – Air and Radiant temperature – Air speed – Humidity • Future versions of the app will add methods to collect details on occupant clothing and metabolic rate, the two remaining comfort factors
  13. 13. • The survey consisted of 65 questions based on LEED requirements and examples from the Center for the Built Environment • The app may be used to disseminate other surveys in the RSF or in other buildings across the NREL campus
  14. 14. Credit:MarjorieSchott(NREL) Correlate local measurements to occupant feedback “Phidgets” collect temperature, humidity, and light readings through a USB port on occupant’s computer Temperature Comfort Humidity Comfort Lighting Comfort Glare Comfort Noise Comfort Air Movement Comfort Temp C° Lighting Lux Humidity % Timestamp Cold Dry Glare Noisy 23 354.0 28 05/23 17:13
  15. 15. What about occupant comfort?
  16. 16. OFFICE EQUIPMENT Laptop 30 Watts LCD Monitors 30 Watts LED task lights 6 Watts VOIP phones 2 Watts iGo Power Smart Towers Shared Multi-function Devices 100 Watts (continuous) Workstation Total 68 Watts
  17. 17. NOISE LEVEL / PRIVACY
  18. 18. PINK NOISE
  19. 19. Of the 273 survey responders glare was reported as a problem for: 36% of those facing east 31% of those facing west 46% of those facing north 58% of those facing south Typical facing direction in RSF layout NumberofPeople 0 5 10 15 20 25 30 35 40 45 1 hour or less 1 to 4 hours More than 4 hours East North South West
  20. 20. GLARE CONTROL
  21. 21. Comfort Feedback from January 10 –June 6, 2012
  22. 22. Comfort Feedback from January 10 –June 6, 2012
  23. 23. MEASURING TEMPERATURE
  24. 24. OPERATIONAL CONTROLS
  25. 25. CBE STUDY Adaptive Comfort in Mixed-Mode Buildings: Research Support Facility, National Renewable Energy Lab Gail Brager and Margaret Pigman April 2013 Center for the Built Environment (CBE) University of California, Berkeley LINK: http://escholarship.org/uc/item/9fd5k28h
  26. 26. Which of the following do you personally adjust or control in your workspace? Credit: CBE (Gail Brager and Margaret Pigman)
  27. 27. WINDOW USE Credit: CBE (Gail Brager and Margaret Pigman)
  28. 28. WINDOW USE Credit: CBE (Gail Brager and Margaret Pigman)
  29. 29. 9% 17% 9% 9% 43% 26% 20% 20% 89% 3% 54% 66% 0% 20% 40% 60% 80% 100% Other: Management requests that you open the window A co-worker requests that you open the window For nighttime cooling To conserve energy To experience the variety of the outdoor climate To hear outdoor sounds To let out indoor smells, dust, or other pollution To let in fresh air To feel warmer To increase the air movement To feel cooler % respondents N=35 WINDOW USE REASON TO OPEN A WINDOW Credit: CBE (Gail Brager and Margaret Pigman)
  30. 30. WINDOW USE REASON TO CLOSE A WINDOW 9% 54% 17% 29% 14% 57% 46% 17% 46% 60% 51% 0% 20% 40% 60% 80% 100% For safety or security reasons To conserve energy To keep out bugs Management requests that you close the window A co-worker requests that you close the window To reduce outdoor sounds To keep out outdoor smells, dust, or other pollution To reduce the air movement To feel warmer The outdoor temperature is getting warmer than indoors To feel cooler % respondents N=35 Credit: CBE (Gail Brager and Margaret Pigman)
  31. 31. South.window South.no.window North.no.window North.window All All 2nd 3rd 4th 61% 18 67% 15 71% 7 75% 16 65% 62 50% 8 71% 7 100% 1 83% 6 70% 23 100% 3 100% 4 100% 3 75% 4 87% 15 57% 7 25% 4 50% 2 67% 6 50% 22 Satisfaction with Temperature −3 −1 1 3 Value Color Key TEMPERATURE Credit: CBE (Gail Brager and Margaret Pigman)
  32. 32. Database LEED NREL Mixed-Mode Naturally Ventilated Legend Mean value -0.13 0.40 0.92 0.32 1.43 RSF TEMPERATURE Credit: CBE (Gail Brager and Margaret Pigman)
  33. 33. AIR QUALITY South.window South.no.window North.no.window North.window All All 2nd 3rd 4th 78% 18 60% 15 71% 7 81% 16 73% 62 75% 8 71% 7 100% 1 83% 6 78% 23 100% 3 75% 4 100% 3 75% 4 87% 15 71% 7 25% 4 50% 2 83% 6 64% 22 Satisfaction with Air Quality −3 −1 1 3 Value Color Key Credit: CBE (Gail Brager and Margaret Pigman)
  34. 34. AIR QUALITY Database LEED NREL Mixed-Mode Naturally Ventilated Legend Mean value 0.27 1.21 1.44 1.63 2.25 RSF Credit: CBE (Gail Brager and Margaret Pigman)
  35. 35. PRODUCTIVITY Please estimate how your productivity is increased or decreased by the environmental conditions in this building (e.g., thermal, lighting, acoustics, cleanliness): 76% of the respondents felt that their productivity was improved by the IEQ conditions in the building Credit: CBE (Gail Brager and Margaret Pigman)
  36. 36. EMPLOYEE SATISFACTION

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