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Lighting & Lighting Controls In Education Applications
Sophie ParryNational Accounts Manager- Energy Solutions
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AGENDA
1. Background and current best practice2. The design process3. Day lighting4. Artificial lighting5. Lighting controls6. The retrofit market7. Sustainability
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Background & Current Best Practice
Lessons Learned from BSF Projects
Requirement- Designs that meet relevant standards and current best practice
Example-Schools falling under the PSBP (Priority Schools Building Programme)
Section 2.8.5 Daylight & Lighting Referenced Standards/ guides
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Design ProcessTeaching spaces require careful consideration in respect of:
• Simple operation for end user
• Daylight harvesting v/v consistent and useful lighting levels
• Effective lighting control at teaching wall/ white board
• Energy saving potential through a compliant lighting design including compliant lighting control solution
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Day Lighting• Good design should make best
use of day light wherever possible to promote the psychological and physiological well-being of occupants.
• Fenestration cannot be designed with the sole purpose of maximising day lighting
External Solar Blinds
The following overall design factors have to be taken into account:
• Day lighting design• Prevention of summertime overheating• Design of ventilation• Acoustic design• Blinds/ shading can be automated with lighting controls to blend day light and artificial light
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Day Lighting Cont.• Good design should make best use of day light wherever possible
• Day light needs to be controlled to prevent glare and solar gain
• Day light can be blended with artificial light to provide the desired lighting solution (daylight harvesting)
• Design based on Climate Based Daylight Model (CDBM), specifically Daylight Autonomy (DA) & Useful Daylight index (UDI)& takes precedence over the daylight minima factors in BREEAM
Day lighting internal spacesA calibrated photocell can form the basis of a daylight harvesting feature as part of a solar blind/ lighting control system
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Benchmark Lighting Design - Classroom
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Benchmark Lighting Design – Lecture Theatre
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Benchmark Lighting Control - Classrooms
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Benchmark Lighting Control - Classrooms
• Detectors set to absence mode
• Detector coverage limited to 30m2
• Luminaires to be regulated
• Particular attention to teaching wall/screen
• Each row of lighting has a separate detector/ photocell
• Photocells should be located for accurate sensing of daylight levels relative to lighting row
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Benchmark Lighting Control- Lecture Theatres
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Benchmark Lighting Control - Lecture Theatres
• Not always the potential for day lighting
• Luminaires to be regulated
• Typically larger seating capacity/space than a standard 30 student classroom
• Allow for absence detection
• Pay particular attention to lighting over demonstration area and teaching wall
• AV systems in common use and can be interfaced to lighting control system
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The Retro-Fit Market
Source: Engineering Sustainable Schools- CIBSE Schools Design Group
• Lighting and lighting controls are a popular choice as an energy saving retrofit option in 2011
• In the graph opposite, it is noted that lighting controls are the 4th most popular choice
• Followed by Lighting as the 5th most popular choice
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Sustainability
Design & Commercial Considerations Sourcing of Lighting & Control Products
Source: CIBSE/SSL LG5
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Conclusion
THANK YOU
ANY QUESTIONS?
Acknowledgements: CIBSE/SLL LG5CIBSE Schools Design Group