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PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Research Program Project 4.5 Integrated Classroom Lighting System Funded by Finelite.

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Presentation on theme: "PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Research Program Project 4.5 Integrated Classroom Lighting System Funded by Finelite."— Presentation transcript:

1 PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Research Program Project 4.5 Integrated Classroom Lighting System Funded by Finelite and California Energy Commission's Public Interest Energy Research (PIER) Program

2 PIER Lighting Research ProgramArchitectural Energy Corporation What is the PIER 4.5 Study? PIER stands for Public Interest Energy ResearchPIER stands for Public Interest Energy Research PIER is part of the California Energy CommissionPIER is part of the California Energy Commission PIER 4.5 was a research project about classroom lightingPIER 4.5 was a research project about classroom lighting The project involved hundreds of people, included installations in real-world classrooms, and lasted over two yearsThe project involved hundreds of people, included installations in real-world classrooms, and lasted over two years Its findings are important for architects, engineers, project managers, contractors, school administrators and officials that set policies at state and national levels.Its findings are important for architects, engineers, project managers, contractors, school administrators and officials that set policies at state and national levels.

3 PIER Lighting Research ProgramArchitectural Energy Corporation The PIER 4.5 Team: ArchitectsArchitects Leading lighting designersLeading lighting designers EngineersEngineers Energy professionals with leading utilitiesEnergy professionals with leading utilities Daylighting expertsDaylighting experts School superintendents and their facilities teamsSchool superintendents and their facilities teams Staff at the California Energy Commission, Architectural Energy Corporation, Finelite, The Watt Stopper, FERRO and OSRAMStaff at the California Energy Commission, Architectural Energy Corporation, Finelite, The Watt Stopper, FERRO and OSRAM Teachers, students and staff at the five school districts where ICLS systems were installed in 18 classroomsTeachers, students and staff at the five school districts where ICLS systems were installed in 18 classrooms

4 PIER Lighting Research ProgramArchitectural Energy Corporation PIER 4.5 built on established practices: RP-1 and RP-3 Guidelines: –Increased control leads to increased satisfaction –Light the surfaces –Pay special attention to the teaching wall –Reduce glare –Light the instructor’s face –Design should accommodate space changes –Light uniformly. Established Electric Lighting Practices Daylighting Study & Practices Collaborative for High Performance Schools PIER 4.5 Research It’s not just about 50fc! PIER 4.5 Derivative Research

5 PIER Lighting Research ProgramArchitectural Energy Corporation PIER 4.5 reviewed proven daylight practices: Quality daylighting improves student performance: –Daylight ≠ direct sun –Good daylighting increases student performance –Orient classrooms North/South not East/West –Use both top and side lighting –Use view windows. Established Electric Lighting Practices Daylighting Study & Practices Collaborative for High Performance Schools PIER 4.5 Research PIER 4.5 Derivative Research

6 PIER Lighting Research ProgramArchitectural Energy Corporation PIER 4.5 followed CHPS-developed guidelines: CHPS materials are at www.chps.net: –CHPS focuses on improving the entire school –Design to <1 w/sq. ft. –Utilize indirect luminaires –Incorporate daylighting –Incorporate sustainable practices Established Electric Lighting Practices Daylighting Study & Practices Collaborative for High Performance Schools PIER 4.5 Research PIER 4.5 Derivative Research

7 PIER Lighting Research ProgramArchitectural Energy Corporation PIER 4.5 recognizes that teaching technology is changing! Classroom lighting needs to change: –Classrooms are computerized spaces; glare needs to be reduced –Classrooms are being wired to the web; teaching needs to be interactive –A/V presentations are increasingly important at all grade levels – Daylighting provides special opportunities and challenges. Established Electric Lighting Practices Daylighting Study & Practices Collaborative for High Performance Schools PIER 4.5 Research PIER 4.5 Derivative Research

8 PIER Lighting Research ProgramArchitectural Energy Corporation PIER 4.5 culminated in developing the first commercially available ICLS system: ICLS benefits are real and well tested: –Teacher satisfaction is increased by 9 to 1 –Energy consumption is reduced to 0.8 w/sq. ft. –ICLS can be installed within existing budgets –ICLS integrates easily with daylight controls Established Electric Lighting Practices Daylighting Study & Practices Collaborative for High Performance Schools PIER 4.5 Research PIER 4.5 Derivative Research

9 PIER Lighting Research ProgramArchitectural Energy Corporation PIER Study Methodology Evaluated wide-range of products that would be available by 2005Evaluated wide-range of products that would be available by 2005 Designed and installed a preliminary ICLS systemDesigned and installed a preliminary ICLS system Installed an improved ICLS in 18 classrooms in 6 schoolsInstalled an improved ICLS in 18 classrooms in 6 schools Monitored actual usage and energy consumption for a yearMonitored actual usage and energy consumption for a year Conducted teacher preference surveysConducted teacher preference surveys Installed an enhanced ICLS at SCE training centerInstalled an enhanced ICLS at SCE training center Developed a 181-page report that documents the study including data on each ICLS classroom, teacher preferences, and electric light and daylight interaction at the Southern California Edison CTAC facility (on line at www.finelite.com)Developed a 181-page report that documents the study including data on each ICLS classroom, teacher preferences, and electric light and daylight interaction at the Southern California Edison CTAC facility (on line at www.finelite.com) Provided a free, on-line ICLS performance specification and other industry links at www.finelite.com.Provided a free, on-line ICLS performance specification and other industry links at www.finelite.com.

10 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS Findings: Use high-performance, pendant indirect luminairesUse high-performance, pendant indirect luminaires Provide an Audio / Visual (A/V) mode under teacher controlProvide an Audio / Visual (A/V) mode under teacher control Locate easy-to-use controls at the front of the classroomLocate easy-to-use controls at the front of the classroom Use dual technology occupancy sensors with teacher-controlled delayUse dual technology occupancy sensors with teacher-controlled delay Tie the parts together with low-voltage, plug-and-play cablesTie the parts together with low-voltage, plug-and-play cables Ensure one manufacturer assumes system responsibilityEnsure one manufacturer assumes system responsibility Offer options including:Offer options including: –Photo-sensors for daylight control –A dedicated whiteboard luminaire –Dimming for A/V presentations

11 PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: General Mode: light faces, light vertical wall surfaces, cut glare Walls and ceilings are well litWalls and ceilings are well lit But, veiling reflections can wash out the screen.But, veiling reflections can wash out the screen. One simple switch removes all veiling reflections.One simple switch removes all veiling reflections. The lighting changes from “GENERAL” to “A/V MODE.”The lighting changes from “GENERAL” to “A/V MODE.”

12 PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: A/V operation reduces veiling reflections The screen now looks sharpThe screen now looks sharp Downlight delivers the right light on desksDownlight delivers the right light on desks Dimming can be added as an option.Dimming can be added as an option.

13 PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: General Mode: Two outboard lamps are switch on The ICLS luminaire is wired so the outboard lamps are separate from the center lamp.The ICLS luminaire is wired so the outboard lamps are separate from the center lamp.

14 PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: A/V operation reduces veiling reflections Reflector over center lamp is 96% reflectiveReflector over center lamp is 96% reflective 100% of light directed down to the desks100% of light directed down to the desks

15 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS typical layout LuminairesLuminaires –2-rows –14-foot centers –24-inch suspension –Perpendicular to whiteboard –For over 50 foot candles at less than one watt / square foot, use 3100 lumen T8 lamps and 1.2 BF electronic ballasts

16 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS w/ whiteboard Layout Pendant LuminairesPendant Luminaires –2-rows pendant luminaires –14’ centers –24” suspension –Perpendicular to whiteboard Whiteboard LuminaireWhiteboard Luminaire –12’ Length –1T8 cross section –30” Setback from wall –12” Suspension

17 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS typical layout Controls and sensorsControls and sensors –TCC by whiteboard –Occupancy sensor in center of the room –Row switches by door(s) –Control Pack above door Teacher Control Center Control PackOccupancy Sensor

18 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS typical layout InterconnectionsInterconnections –Low voltage –Plug-and-play between TCC, sensors, and Control Pack –Row switches (high voltage) Teacher Control Center Dual Occupancy Sensors Row Control

19 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS is energy efficient

20 PIER Lighting Research ProgramArchitectural Energy Corporation Monitoring data in Excel format Room 20 Changes from A/V to General Room 22 Changes from General to A/V Room 22 Lights were dimmed in A/V mode Room 18, the control, Uses 82% more power Than Room 22 in “General Mode”

21 PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Usage – 10/1/03 Heritage Oak School – Classroom 22 Time Watt/Sq. ft. 1) Downlight - Dim2) Uplight3) Downlight Max 4) Downlight - Dim 5) Uplight6) Lights Off7) Uplight8) Lights Off9) Uplight10) Lights Off11) Uplight12) Lights Off 13) Downlight - Dim

22 PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Usage – 10/1/03 Heritage Oak School – Control Room18 1) Lights On3) Lights On2) Lights Off Watt/Sq. ft. Time

23 PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Usage – 10/1/03 Heritage Oak School – Classroom 22 Time Watt/Sq. ft. Dimming = Savings Due to Downlight Mode = Added Savings Due to Dimming Dimming

24 PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Usage – 10/1/03 Heritage Oak School – Classroom 22 Time Watt/Sq. ft. = Occupancy Sensor Savings Potential Savings

25 PIER Lighting Research ProgramArchitectural Energy Corporation Lighting Usage – 10/1/03 Heritage Oak School – Room 22 Savings Due to Best Practices. Savings Due to Best Practices with Quality Lighting

26 PIER Lighting Research ProgramArchitectural Energy Corporation ICLS is cost effective NA0.80$955 $1,100 ($1.15 / sq ft) 3 rd Row (3 Rows / room) 2-3 years 0.20$355$500 ($0.52 / sq ft) A/V Dimming (2 Rows, 1-Lamp) 3-6 Months 0.47$30$175 ($0.18 / sq ft) Daylight Switching (each row) Immediate!0.80 - $145 $2,600 ($2.71 / sq ft) ICLS System (A/V + Occupancy) None1.35$0$2,745 ($2.86 / sq ft) 15 Parabolics PaybackEnergy (w/sq. ft.) Difference Installed Cost Alternative

27 PIER Lighting Research ProgramArchitectural Energy Corporation Teachers prefer ICLS 9 to 1

28 PIER Lighting Research ProgramArchitectural Energy Corporation Here are before and after photos of two ICLS test classrooms Heritage Oak – represents new constructionHeritage Oak – represents new construction Dudley Elementary – represents a lighting retrofit project. (There is tremendous opportunity to understand this area better.)Dudley Elementary – represents a lighting retrofit project. (There is tremendous opportunity to understand this area better.)

29 PIER Lighting Research ProgramArchitectural Energy Corporation Heritage Oak control classroom (1.75 watts / sq foot)

30 PIER Lighting Research ProgramArchitectural Energy Corporation Heritage Oak PIER system (0.8 watts / square foot)

31 PIER Lighting Research ProgramArchitectural Energy Corporation Dudley Elementary School (1960’s vintage fixtures, 1.7 watts / sq ft)

32 PIER Lighting Research ProgramArchitectural Energy Corporation Dudley Elementary School (Low Voltage Retrofit, 0.9 watts / sq ft)

33 PIER Lighting Research ProgramArchitectural Energy Corporation Conclusion ICLS benefits are real and well-testedICLS benefits are real and well-tested Building “Awareness” is our next challengeBuilding “Awareness” is our next challenge Thank you for your supportThank you for your support


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