Presentation to Sage Electrochromics March 22, 2013
Effectiveness of Electrochromic Glazing
on an Office Building in Seoul...
Report for Sage Electrochromics Mar 22, 2013
Seoul South Korea Office Building
Report for Sage Electrochromics Mar 22, 2013
Seoul South Korea Office Building
Report for Sage Electrochromics Mar 22, 2013
Seoul South Korea
Office Building
Report for Sage Electrochromics Mar 22, 2013
Rhino Model
for Diva Simulations
with Radiance and Daysim
Report for Sage Electrochromics Mar 22, 2013
Baseline Daylight Glare Probability (dgp)
Report for Sage Electrochromics Mar 22, 2013
Baseline Daylight Glare Probability (dgp)
Perceptible Glare
Intolerable Glare
Report for Sage Electrochromics Mar 22, 2013
Baseline Glare Study Views
To Be Added
Report for Sage Electrochromics Mar 22, 2013
5thFloor Atrium Glare with Standard Glazing
June 21 12:00 pm
5th Floor View i...
Report for Sage Electrochromics Mar 22, 2013
5thFloor Atrium Office
Fisheye view of 5th Floor Meeting Room - Clear Sky Sep...
Report for Sage Electrochromics Mar 22, 2013
Rhino Model
for Diva Simulations
with Radiance and Daysim
Advanced Dynamic Sh...
Report for Sage Electrochromics Mar 22, 2013
DynamicShadingAnalyses
Report for Sage Electrochromics Mar 22, 2013
5thFloor Atrium Glare controlled by EC Dynamic Shading
View toward Atrium Cle...
Report for Sage Electrochromics Mar 22, 2013
5thFloor Atrium Glare with EC dynamic shading
View into Atrium Clear sky Sept...
Report for Sage Electrochromics Mar 22, 2013
DAYSIM Climate Based Daylighting Metrics
Daylight Autonomy and
Usefull Daylig...
Report for Sage Electrochromics Mar 22, 2013
5th Floor and 8th Floor
Daylight Autonomy >300 lux
Dynamic Shading studies sh...
Report for Sage Electrochromics Mar 22, 2013
5th Floor DA
Mean Daylight Autonomy >300 lux on workplane
Low-E vs. SAGE Elec...
Report for Sage Electrochromics Mar 22, 2013
5th Floor UDI
Mean Useful Daylight Illumination
100-2000 lux
Low-E vs. SAGE E...
Report for Sage Electrochromics Mar 22, 2013
5th Floor UDI Mean Useful Daylight Illumination <100 and >2000 lux
5th Floor ...
Report for Sage Electrochromics Mar 22, 2013
8th Floor
Dynamic
Shading
Analysis
Report for Sage Electrochromics Mar 22, 2013
8th Floor Daylight Autonomy
Mean Daylight Autonomy >300 lux on workplane
Low-...
Report for Sage Electrochromics Mar 22, 2013
8th Floor UDI
Mean Useful Daylight Illumination
100-2000 lux
Low-E vs. SAGE E...
Report for Sage Electrochromics Mar 22, 2013
8th Floor Utilization of Daylight Illumination (unusable)
Low-e Glass with no...
Report for Sage Electrochromics Mar 22, 2013
1st Floor
Dynamic
Shading
Analysis
Report for Sage Electrochromics Mar 22, 2013
1st Floor Daylight Autonomy
Mean Daylight Autonomy >300 lux on workplane
Low-...
Report for Sage Electrochromics Mar 22, 2013
1st Floor UDI
Mean Useful Daylight Illumination
100-2000 lux
Low-E vs. SAGE E...
Report for Sage Electrochromics Mar 22, 2013
1st Floor Utilization of Daylight Illumination (unusable)
Low-e Glass with no...
Report for Sage Electrochromics Mar 22, 2013
8th Floor Atrium View Glare
Daylight Glare Probability (dgp) for EC Glazing S...
Report for Sage Electrochromics Mar 22, 2013
Perceptible Glare
Intolerable Glare
Ground Floor Atrium View Glare
Daylight G...
Presentation to Sage Electrochromics Mar 22, 2013
EC Glazing Dynamic Shading States and Illuminance
Loren Abraham, AIA, LE...
Presentation to Sage Electrochromics Mar 22, 2013
Conclusions
1. Electrocrhomic Glazing modeled as a dynamic shading can e...
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Daylighting Analysis of Electrochromic switchable glazing compared to conventional static glazing in an Office Building

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This presentation provides a high level summary of the Daylighting Analysis including Glare Evaluation and climate based metrics (Daylight Autonomy -DA - and Utilization of Daylight Index - UDI) of Electrochromic switchable glazing compared to conventional static glazing for the atrium roof in a ten story Office Building.in South Korea. These analysis were performed using a detailed model constructed in Rhino and using Diva, a plugin for Rhino developed by Christoff Reinhart, Alstan Jekubiac and Jeffrey Neimasz at the Harvard School of Architecture. The annual daylighting performance utilyzes the unique dynamic shading modeling capability in DIVA which works in conjunction with Radiance, a program developed by the Biulding Technology Group at LBNL and by Greg Ward. DIVA is marketed by Solemma (see www.diva4rhino.com). Electrochromic glazing modeled as per the manufacturer's specifications - Sage Electrochroimics, Inc.

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Daylighting Analysis of Electrochromic switchable glazing compared to conventional static glazing in an Office Building

  1. 1. Presentation to Sage Electrochromics March 22, 2013 Effectiveness of Electrochromic Glazing on an Office Building in Seoul South Korea 1. Architect Renderings 2. Rhinocerous 3D Model 3. Radiance Visualization/Glare Studies 4. Modeling EC Glazing as Dynamic Shading with DIVA 2.0 5. Visualization images showing that Dynamic Shading controls glare in atrium 6. Daysim Daylight Autonomy and Utilization of Daylight Illuminance Studies 7. Conclusions Contents
  2. 2. Report for Sage Electrochromics Mar 22, 2013 Seoul South Korea Office Building
  3. 3. Report for Sage Electrochromics Mar 22, 2013 Seoul South Korea Office Building
  4. 4. Report for Sage Electrochromics Mar 22, 2013 Seoul South Korea Office Building
  5. 5. Report for Sage Electrochromics Mar 22, 2013 Rhino Model for Diva Simulations with Radiance and Daysim
  6. 6. Report for Sage Electrochromics Mar 22, 2013 Baseline Daylight Glare Probability (dgp)
  7. 7. Report for Sage Electrochromics Mar 22, 2013 Baseline Daylight Glare Probability (dgp) Perceptible Glare Intolerable Glare
  8. 8. Report for Sage Electrochromics Mar 22, 2013 Baseline Glare Study Views To Be Added
  9. 9. Report for Sage Electrochromics Mar 22, 2013 5thFloor Atrium Glare with Standard Glazing June 21 12:00 pm 5th Floor View into Atrium Clear sky Sep 21 12:00 pm Dec 21 12:00 pm
  10. 10. Report for Sage Electrochromics Mar 22, 2013 5thFloor Atrium Office Fisheye view of 5th Floor Meeting Room - Clear Sky Sept 21 12:00 pm 10,000 lux
  11. 11. Report for Sage Electrochromics Mar 22, 2013 Rhino Model for Diva Simulations with Radiance and Daysim Advanced Dynamic Shading Results
  12. 12. Report for Sage Electrochromics Mar 22, 2013 DynamicShadingAnalyses
  13. 13. Report for Sage Electrochromics Mar 22, 2013 5thFloor Atrium Glare controlled by EC Dynamic Shading View toward Atrium Clear sky Sept 21 12:00 pm View into Atrium from meeting room
  14. 14. Report for Sage Electrochromics Mar 22, 2013 5thFloor Atrium Glare with EC dynamic shading View into Atrium Clear sky Sept 21 12:00 pm View into Atrium from meeting room
  15. 15. Report for Sage Electrochromics Mar 22, 2013 DAYSIM Climate Based Daylighting Metrics Daylight Autonomy and Usefull Daylight Illuminance Daylight Autonomy Daylight Autonomy (DA) is the percentage of annual occupied hours (assumed to be 8am-6pm) that a given point in a space is above a specified illumination level. For the graphs shown, a Daylight Autonomy threshold of 300 lux (DA300) was selected. The mean percent values represent the percentage of the floor area that exceeds 300 lux for at least 50% of the time. Useful Daylight Illuminance Useful Daylight Illuminance (UDI) is a modification of Daylight Autonomy conceived by Mardaljevic and Nabil in 2005. This metric “bins” hourly time values based upon three illumination ranges, 0-100 lux, 100-2000 lux, and over 2000 lux. It provides full credit only to values between 100 lux and 2,000 lux based on the premise that horizontal illumination values outside of this range are not useful.
  16. 16. Report for Sage Electrochromics Mar 22, 2013 5th Floor and 8th Floor Daylight Autonomy >300 lux Dynamic Shading studies show no appreciable loss in daylighting opportunity 8th Floor Baseline Daylight Autonomy
  17. 17. Report for Sage Electrochromics Mar 22, 2013 5th Floor DA Mean Daylight Autonomy >300 lux on workplane Low-E vs. SAGE Electrochromic Atrium Glazing No significant loss in daylighting opportunity Low-e Glass with no dynamic shading Mean Daylight Autonomy = 38% of time occupied EC Switchable Glass dynamic shading Mean Daylight Autonomy = 37% of time occupied 5th Floor Daylight Autonomy
  18. 18. Report for Sage Electrochromics Mar 22, 2013 5th Floor UDI Mean Useful Daylight Illumination 100-2000 lux Low-E vs. SAGE Electrochromic Atrium Glazing EC Glass significantly improves useful daylight illumination 5th Floor Useful Daylight Illumination Low-e Glass with no dynamic shading Mean Utilization of Daylight Illumination = 57.5% of time occupied EC Switchable Glass dynamic shading Mean Utilization of Daylight Illumination = 65% of time occupied
  19. 19. Report for Sage Electrochromics Mar 22, 2013 5th Floor UDI Mean Useful Daylight Illumination <100 and >2000 lux 5th Floor Utilization of Daylight Illumination (unusable) Low-e Glass with no dynamic shading EC Switchable Glass dynamic shading UDI <100 Lux (inadequate illumination) UDI >2000 Lux (Excessive illumination) EC results in Less Glare
  20. 20. Report for Sage Electrochromics Mar 22, 2013 8th Floor Dynamic Shading Analysis
  21. 21. Report for Sage Electrochromics Mar 22, 2013 8th Floor Daylight Autonomy Mean Daylight Autonomy >300 lux on workplane Low-E vs. SAGE Electrochromic Atrium Glazing No significant loss in daylighting opportunity 8th Floor Daylight Autonomy Low-e Glass with no dynamic shading Mean Daylight Autonomy = 48% of time occupied EC Switchable Glass dynamic shading Mean Daylight Autonomy = 45% of time occupied
  22. 22. Report for Sage Electrochromics Mar 22, 2013 8th Floor UDI Mean Useful Daylight Illumination 100-2000 lux Low-E vs. SAGE Electrochromic Atrium Glazing EC Glass significantly improves useful daylight illumination 8th Floor Utilization of Daylight Illumination Low-e Glass with no dynamic shading Mean Utilization of Daylight Illumination = 49% of time occupied EC Switchable Glass dynamic shading Mean Utilization of Daylight Illumination = 54% of time occupied
  23. 23. Report for Sage Electrochromics Mar 22, 2013 8th Floor Utilization of Daylight Illumination (unusable) Low-e Glass with no dynamic shading EC Switchable Glass dynamic shading UDI <100 Lux (inadequate illumination) UDI >2000 Lux (Excessive illumination) 8th Floor UDI Mean Useful Daylight Illumination <100 and >2000 lux EC results in Less Glare
  24. 24. Report for Sage Electrochromics Mar 22, 2013 1st Floor Dynamic Shading Analysis
  25. 25. Report for Sage Electrochromics Mar 22, 2013 1st Floor Daylight Autonomy Mean Daylight Autonomy >300 lux on workplane Low-E vs. SAGE Electrochromic Atrium Glazing 2-4% loss in daylight autonomy 1st Floor Daylight Autonomy Low-e Glass with no dynamic shading Mean Daylight Autonomy - % of time occupied 1st floor except Atrium = 50% Atrium = 94% EC Switchable Glass dynamic shading Mean Daylight Autonomy 1st floor except Atrium = 48% Atrium = 90%
  26. 26. Report for Sage Electrochromics Mar 22, 2013 1st Floor UDI Mean Useful Daylight Illumination 100-2000 lux Low-E vs. SAGE Electrochromic Atrium Glazing EC Glass significantly improves atrium UDI 1st Floor Utilization of Daylight Illumination Low-e Glass with no dynamic shading Mean Utilization of Daylight Illumination 1st floor except Atrium = 61.7% Atrium = 59% EC Switchable Glass dynamic shading Mean Utilization of Daylight Illumination 1st floor except Atrium = 61% Atrium = 88%
  27. 27. Report for Sage Electrochromics Mar 22, 2013 1st Floor Utilization of Daylight Illumination (unusable) Low-e Glass with no dynamic shading EC Switchable Glass dynamic shading UDI <100 Lux (inadequate illumination) UDI >2000 Lux (Excessive illumination) 1st Floor UDI Mean Useful Daylight Illumination <100 and >2000 lux EC results in 27% Less Glare
  28. 28. Report for Sage Electrochromics Mar 22, 2013 8th Floor Atrium View Glare Daylight Glare Probability (dgp) for EC Glazing States EC Clear (60% VT) EC20 (20% VT) EC06 (6% VT) EC02(2% VT)
  29. 29. Report for Sage Electrochromics Mar 22, 2013 Perceptible Glare Intolerable Glare Ground Floor Atrium View Glare Daylight Glare Probability (dgp) for EC Glazing States EC Clear (60% VT) EC20 (20% VT) EC06 (6% VT) EC02(2% VT)
  30. 30. Presentation to Sage Electrochromics Mar 22, 2013 EC Glazing Dynamic Shading States and Illuminance Loren Abraham, AIA, LEED AP, IDSA, Abraham & Associates Source: Modeling Dynamic Shading Devices with the DIVA Advanced Shading Module by J. Alstan Jakubiec, Solemma LLC, MIT Building Technology and Jeff Neimasz, Solemma, LLC
  31. 31. Presentation to Sage Electrochromics Mar 22, 2013 Conclusions 1. Electrocrhomic Glazing modeled as a dynamic shading can effectively reduce disability glare caused by direct illumination through the atrium when compared to static glazing such as Dual Pane Low-e glass. 2. Mean Useful Daylight Illumination is improved overall when Electrochromic glazing is used for atrium glazing. 3. Mean Daylight autonomy where >300 Lux is maintained on the workplane is slightly reduced when Electrochromic Glazing is used for atrium glazing in lieu of Low-e glazing  5th Floor Mean DA >300 Lux is reduced from 38% to 37% of occupied hours  8th Floor Mean DA >300 Lux is reduced from 48% to 45% of occupied hours  1st Floor Mean DA >300 Lux is reduced from 50% to 48% of occupied hours except in Atrium where it is reduced from 94% to 90% Loren Abraham, AIA, LEED AP, IDSA, Abraham & Associates

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