Lighting & Lighting Controls In Education Applications

Sophie ParryNational Accounts Manager- Energy Solutions

2 File Number

AGENDA

1. Background and current best practice2. The design process3. Day lighting4. Artificial lighting5. Lighting controls6. The retrofit market7. Sustainability

3 File Number

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

4 File Number

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

5 File Number

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

6 File Number

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

7 File Number

Benchmark Lighting Design - Classroom

8 File Number

Benchmark Lighting Design – Lecture Theatre

9 File Number

Benchmark Lighting Control - Classrooms

10 File Number

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

11 File Number

Benchmark Lighting Control- Lecture Theatres

12 File Number

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

13 File Number

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

14 File Number

Sustainability

Design & Commercial Considerations Sourcing of Lighting & Control Products

Source: CIBSE/SSL LG5

15 File Number

Conclusion

THANK YOU

ANY QUESTIONS?

Acknowledgements: CIBSE/SLL LG5CIBSE Schools Design Group