Solar Canopy Illumination System Technical Slides

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Solar Canopy Illumination SystemTechnical Slides
Explanatory texts for each slide can be found in
the Notes section within this presentation. To
view the Notes, just right click on the screen
and select "edit slides
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Goal of the Solar Canopy Illumination System

• To establish feasibility and cost-effectiveness
  of core daylighting for standard multi-floor
  buildings
• To substantially reduce the need for electric
  lighting and therefore reduce greenhouse gas
  emissions
• To help Canada to be recognized for advanced
  lighting and sustainable technologies
• Not expecting to address every type of building,
  but system could be used in many standard office
  towers

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Solar Canopy Illumination System
Side View of Building
Solar canopies mounted on the south-facing wall
of a multi-storey building guide sunlight into
prism light guides
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Interior of the Solar Canopy System
Top View
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Design of the Solar Canopy System
Frontal View
?-------------------------------------------------
----------------? Adaptive
Butterfly Array
Isometric View
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Solar Canopy Enclosure
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The ABA Mirrors
One Section of the Adaptive Butterfly Array (ABA)
Mirror with the Universal Joint
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ABA Mirrors in Motion
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Side View of ABA Mirrors showing Redirection of
Sunlight
Path of Sunlight
ABA Mirrors
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Motion of the ABA Mirrors in Relation to Times
of the Day
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Motion of the ABA Mirrors in Relation to Seasons
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The Dual Function Light Guide
One Section of the Dual Function Light Guide
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Cross Section of Dual-Function Light Guide
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Control Algorithms
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Methods of Integrating the Solar Canopy
Exterior Canopy
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Methods of Integrating the Solar Canopy
Recessed Canopy
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Methods of Integrating the Solar Canopy
Virtually Recessed Canopy
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Solar Canopy Portable Test Facility
Great Northern Way Campus, Vancouver BC Test
Trailer
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Floor Plan of the Portable Test Facility
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Workspace Illumination Measurements in the
Portable Test Facility

• Illumination Scenarios
• Sunny Weather Condition
• Daylight entering through the window only
• Daylight entering through the window and the
  light guide
• Cloudy Weather Condition
• Daylight entering through the window only
• Daylight entering through the window and the
  light guide
• Daylight entering through the window and the
  light guide, with supplementary electrical
  lighting

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UBC Solar Canopy Illumination System
Weather Condition Sunny Light Source
None Light Source Window
Window Covered
Window Uncovered
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UBC Solar Canopy Illumination System
Weather Condition Sunny Light
Source Light guide Light Source Light
guideWindow
Window Covered
Window Uncovered
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UBC Solar Canopy Illumination System
Weather Condition Cloudy Light Source
None Light Source Window
Window Covered
Window Uncovered
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UBC Solar Canopy Illumination System
Weather Condition Cloudy Light
Source Light guide Light Source Light
guideWindow
Window Covered
Window Uncovered
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UBC Solar Canopy Illumination System
Weather Condition Cloudy
Light Source ElectricLight guideWindow
Light Source ElectricLight guide
Window Covered
Window Uncovered
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Visualizing the Solar Canopy Illumination System
on a Multi-Storey Building
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Demonstration of the Solar Canopy on a Real
Building
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Demonstration of the Solar Canopy on a Real
Building
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Purposes of the Demonstration

• The building integration phase will enable us to
  demonstrate that the system is compatible with
  standard building construction techniques.
• The system will substantially reduce the
  electrical lighting loads for the building.
• 3. The demonstration provides the opportunity to
  evaluate and monitor the quality of the daylight
  illumination from the perspective of the
  occupants.

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Benefits of Hybridization

• Energy saving features
• Provides shade for the windows
• Collected heat can be conducted inside or
  rejected
• Protection for low-cost photovoltaic cells
• Dual-function light guide provides supplementary
  electric lighting
• Hybridized features enable a cost-effective
  system.

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Cost Benefit Analysis

• System cost
• Because of hybridization, partial system cost is
  paid for by other aspects of the building
• Dedicated solar lighting elements in the system
  are the Adaptive Butterfly Array, its control
  system, the concentrating mirrors and the prism
  light guide films
• Cost effective purely in terms of energy savings

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Cost Benefit Analysis

• Human factors could provide additional benefits
• Glare reduction
• Contact with outdoors
• Colour rendering
• We are not attempting to quantify these at this
  time, although others are doing so

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A Cost-Effective Solution for Core Daylighting
in Office Buildings