Commercial Applications for Daylighting

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This workshop will provide a general overview of daylighting strategies in commercial buildings, emphasizing the importance of integrating daylighting with energy-efficient lighting systems and controls. We will also explore how daylighting is achieved from a LEED standpoint and how CA's Title 24 addresses daylighting.

Sandy Houck, LC, LEED AP of Brummitt Energy Associates will present the benefits of daylighting strategies for your commercial project.

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Commercial Applications for Daylighting

  1. 1. OPTIMIZING DAYLIGHTING STRATEGIES PRESENTED BY: Sandy Houck, LEED AP, LC August 18, 2011 Improving the performance and value of your buildings
  2. 2. GOALS MAKE DAYLIGHTING A PRIORITY IN DESIGN START EARLY IN THE DESIGN PROCESS PROVIDE AUTOMATIC DAYLIGHTING CONTROLS PROVIDE COMMISSIONING & EDUCATE OCCUPANTS
  3. 3. DAYLIGHTING FOR TASK-ORIENTED SPACES PHOTO CREDIT: SQUARE1 SUNLIT SPACE DAYLIT SPACE
  4. 4. WHAT WE DON’T WANT TO CREATE… A SAUNA WHERE PEOPLE HAVE TO WORK PHOTO CREDIT: DAYLIGHTING COLLABORATIVE
  5. 5. WHAT WE DON’T WANT TO CREATE… A DOUBLE-LIT SPACEIT’S NOT EFFECTIVEDAYLIGHT UNLESS THEELECTRIC LIGHTSARE OFF.
  6. 6. DAYLIGHT AVAILABILITY  DIRECT SUN  DIFFUSE SKY LIGHT  REFLECTED LIGHT SOURCE: ILLUMINATING ENGINEERING SOCIETY NORTH AMERICA
  7. 7. AESTHETIC QUALITIES OF DAYLIGHTING  DAYLIGHT IS DYNAMIC  FULL SPECTRUM PHOTO CREDIT: GREENSOURCE MAGAZINEPHOTO CREDIT: LRC DAYLIGHTING DIVIDENDS
  8. 8. ENERGY EFFICIENT QUALITIES OF DAYLIGHTINGEFFICACY OF LIGHT SOURCE (LUMENS/WATT) INCANDESCENT (16-40 LUMENS/WATT) FLUORESCENT (90-100 LUMENS/WATT) DIFFUSE SKY LIGHT (125-150 LUMENS/WATT) SOURCE: HIGH TECH HIGH CHULA VISTA
  9. 9. BEST BUILDING FOOTPRINTS FOR DAYLIGHTING LONG AND NARROW FOOTPRINT ORIENT LONG AXIS RUNNING EAST/WEST HIGH PERCENT OF PERIMETER AREA IESNA RP-5
  10. 10. TOPLIGHTING -OPENINGS IN THE ROOF PLANE- ONE-STORY BUILDINGS TOP FLOOR OF MULTI-STORY BUILDINGS REPRESENTS ~60% OF SOURCE: IESNA COMMERCIAL FLOOR SPACE
  11. 11. SAWTOOTHS, MONITORS & CLERESTORIES  DELIVERS DAYLIGHT DEEPER INTO SPACE  ORIENTATION HAS AN IMPACT  CLEAR GLAZING (WHEN NORTH- FACING)CHAPARRAL HIGH SCHOOL  MORE CHALLENGING TO DARKEN SPACE
  12. 12. SKYLIGHTS 3% - 5% SKYLIGHT TO FLOOR AREA RATIOSOURCE: VELUX
  13. 13. TUBULAR DAYLIGHTING DEVICESSOURCE: SOLATUBE
  14. 14. SIDELIGHTING -VERTICAL GLAZING- PHOTO CREDIT: KALWALL USEFUL ON ANY LEVEL OF A BUILDING PHOTO CREDIT: LRC DAYLIGHT DIVIDENDS
  15. 15. SIDELIGHTING GLAZING LOCATIONS EXAMPLE BUILDING IN LOS ANGELES
  16. 16. HIGH PERFORMANCE GLAZING Visible Light Transmittance (VLT) Solar Heat Gain Coefficient (SHGC)SOURCE: PPG
  17. 17. HIGH PERFORMANCE GLAZING LIGHT TO SOLAR GAIN FACTOR LSG FACTOR = VLT/SHGCSOURCE: PPG
  18. 18. IMPORTANCE OF TYPE & SIZE OF GLAZING
  19. 19. EXTERIOR SHADING STRATEGIES N ORTHERN H EM I SP HERE
  20. 20. OVERHANGS (SOUTH)SOURCE: WHOLE BUILDING DESIGN GUIDE SAN DIEGO CLIMATE – ALSO CONSIDER SHADING AT EQUINOX (SEPTEMBER 21)
  21. 21. FINS (EAST & WEST)SOURCE: ILLUMINATING ENGINEERING SOCIETY NORTH AMERICA
  22. 22. EXTERIOR SHADING STRATEGIES SCREENSOURCE: NY TIMES BUILDING SOURCE: NY TIMES BUILDING
  23. 23. EXTERIOR SHADING STRATEGIES SAN ELIJO LAGOON VISITOR’S CENTERWATER LIFE MUSEUM, HEMET
  24. 24. SOURCE: ADVANCED LIGHTING GUIDELINES LIGHT SHELF (SOUTH)Photo Credit: Ash Creek Elementary, Monmouth,OR by BOORA Architects
  25. 25. INTERIOR SHADING STRATEGIESPhoto Credit: MechoShade VIEW-PRESERVING FABRIC SHADES
  26. 26. INTERIOR SHADING STRATEGIESBLACKOUT FABRIC SHADES ARCHITECTS HANNAH GABRIEL WELLS HEADQUARTERS ARCHITECTS HANNAH GABRIEL WELLS HEADQUARTERS
  27. 27. INTERIOR SHADING STRATEGIES BLINDS (NOTICE SEPARATE CONTROL OF VIEW & DAYLIGHT SECTION OF WINDOW)
  28. 28. INTERIOR SHADING STRATEGIES VERTICAL BLINDS (EAST & WEST FAÇADE)HORIZONTAL BLINDS (SOUTH FAÇADE)
  29. 29. INTERIOR DESIGN TO OPTIMIZE DAYLIGHTING LIGHT-COLORED SURFACES AVOID ‘CAVE’ EFFECT WITH LIGHT-COLORED CEILING
  30. 30. DESIGN ELECTRIC LIGHTING FOR DAYLIT SPACES TASK/AMBIENT DESIGN DIRECT/INDIRECT LIGHTING ORIENT PARALLEL TO WINDOW LAMP COLOR TEMPERATURE (MIN. 4100K)
  31. 31. ZONE ELECTRIC LIGHTING FOR DAYLIGHT RESPONSIVE CONTROLIESNA RP-5
  32. 32. THE NEED FOR AUTOMATIC CONTROLS
  33. 33. PROVIDE DAYLIGHT RESPONSIVECONTROLS FOR ELECTRIC LIGHTING Credit: LC&D, Lutron & WattStopper
  34. 34. COMMISSIONING & MAINTENANCE OF AUTOMATIC CONTROLS SAN ELIJO LAGOON VISITOR’S CENTER
  35. 35. COMMISSIONING & MAINTENANCE OF AUTOMATIC CONTROLSA DAYLIT SPACE NOT A DAYLIT SPACE . . . YET
  36. 36. TITLE 24 2008 & DAYLIGHTING
  37. 37. TITLE 24 2008 - DAYLIT ZONESSIDELIGHTING SOURCE: CA TITLE24 NONRES MANUAL
  38. 38. TITLE 24 2008 - DAYLIT ZONESTOPLIGHTING SOURCE: CA TITLE24 NONRES MANUAL
  39. 39. TITLE 24 2008 – CONTROL CREDITS
  40. 40. LEED & DAYLIGHTING INDOOR ENVIRONMENTAL QUALITY CATEGORY IEQC8.1 – DAYLIGHT -PROVIDE ADEQUATE DAYLIGHT FOR 75% OF REGULARLY OCCUPIED SPACESMED IMPACT – LEED GOLD CERTIFIED SDCCD WEST CITY CENTER – LEED GOLD CERTIFIED
  41. 41. LEED DAYLIGHT CREDIT IEQC8.1 CALCULATION METHODS LEED v2 LEED v3 Option 1 Option 1 Glazing Factor Simulation Calculation Option 2 Daylight Option 2 Simulation Prescriptive Model Option 3 Option 3 Daylight Measurement Measurement Option 4 Combination
  42. 42. LEED DAYLIGHT CREDIT IEQC8.1 PRESCRIPTIVE CALCULATIONS LEED v2 LEED v3 Option 1 Option 1 Glazing Factor Simulation Calculation Option 2 Daylight Option 2 Simulation Prescriptive Model Option 3 Option 3 Daylight Measurement Measurement Option 4 Combination
  43. 43. LEED PRESCRIPTIVE CALCULATIONS V2.2 V3 (2009)  ACHIEVE A MINIMUM 2%  FORMULA BASED ON GLAZING FACTOR IN AT GEOMETRY AND LEAST 75% OF ALL GLAZING VLT REGULARLY OCCUPIED SPACES.  ACHIEVABLE IN VERY LIMITED  RELATIVELY EASY TO COMPLY TYPES OF SPACES  BASED ON GEOMETRY & GLAZING VLT ONLY
  44. 44. LEED DAYLIGHT CREDIT IEQC8.1 PERFORMANCE CALCULATIONS LEED v2 LEED v3 Option 1 Option 1 Glazing Factor Simulation Calculation Option 2 Daylight Option 2 Simulation Prescriptive Model Option 3 Option 3 Daylight Measurement Measurement Option 4 Combination
  45. 45. LEED PERFORMANCE CALCULATIONS V2.2 V3 (2009)  COMPUTER SIMULATION  COMPUTER SIMULATION NOON ON EQUINOX 9AM AND 3PM ON (SEPT. 21) EQUINOX (SEPT. 21)  MINIMUM ILLUMINANCE 25FC  10FC < ILLUMINANCE < 500FC
  46. 46. TOP 4 THINGS TO REMEMBER . . . 1. MAKE DAYLIGHTING A PRIORITY IN YOUR PROJECT 2. START EARLY IN THE DESIGN 3. PROVIDE AUTOMATIC DAYLIGHTING CONTROLS 4. COMMISSION THE SYSTEM & EDUCATE THE USERS
  47. 47. OPTIMIZING DAYLIGHTING STRATEGIES PRESENTED BY: Sandy Houck, LEED AP, LC shouck@brummitt.com August 18, 2011 B R U M M I TT E N E R G Y A S S O C I AT E S , I N C . Helping people achieve very energy efficient buildings

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