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

PIER Lighting Research ProgramArchitectural Energy Corporation Project 4.5 set four broad objectives Bring together:Bring together: –New technologies in an –Integrated system to provide –Better classroom lighting (ICLS) Use actual installations to prove ICLS worksUse actual installations to prove ICLS works Turn the research into commercial productsTurn the research into commercial products Help promote the use of the new system.Help promote the use of the new system.

PIER Lighting Research ProgramArchitectural Energy Corporation Targeted benefits included: Reducing eyestrain and glareReducing eyestrain and glare Improving lighting on walls and facesImproving lighting on walls and faces Providing excellent lighting for A/VProviding excellent lighting for A/V Balancing daylighting and electric lightingBalancing daylighting and electric lighting Increasing teachers satisfactionIncreasing teachers satisfaction Reducing energy usage by 30% - 50%Reducing energy usage by 30% - 50% Keeping within the same construction budgetKeeping within the same construction budget

PIER Lighting Research ProgramArchitectural Energy Corporation ICLS development steps included: Using CHPS work as a starting pointUsing CHPS work as a starting point Evaluating new and emerging technologiesEvaluating new and emerging technologies Verifying 96% reflective material worksVerifying 96% reflective material works Building a working systemBuilding a working system Getting critiques from professionalsGetting critiques from professionals Soliciting feedback from users (teachers)Soliciting feedback from users (teachers) Using feedback to make ICLS betterUsing feedback to make ICLS better

PIER Lighting Research ProgramArchitectural Energy Corporation ICLS elements include: Indirect / direct luminaires that: Light the teacher’s face, walls and reduce glareLight the teacher’s face, walls and reduce glare Light for A/V needs: cut veiling reflections but light desksLight for A/V needs: cut veiling reflections but light desks Cut energy use by 37% to 1 watt / sq. ft.Cut energy use by 37% to 1 watt / sq. ft. Meet school budgets.Meet school budgets. Controls and sensors that: Let the teacher control lighting from the front of the classroomLet the teacher control lighting from the front of the classroom Improve acceptance of controlsImprove acceptance of controls Adjust electric lighting based on daylight (manual & automatic)Adjust electric lighting based on daylight (manual & automatic) Offer options including dimming and whiteboard luminaires.Offer options including dimming and whiteboard luminaires. Plug-and-play interconnections that: Guarantee accurate, no-hassle installationGuarantee accurate, no-hassle installation Ensure components work togetherEnsure components work together Reduce support and warranty costs.Reduce support and warranty costs.

PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: General Mode: light faces, light vertical wall surfaces, cut glare Use 2-rows of indirect / direct luminairesUse 2-rows of indirect / direct luminaires Add new feature for teachers to set a 1-hour occupancy delay during test or quiet timeAdd new feature for teachers to set a 1-hour occupancy delay during test or quiet time Use 3100 lumen T8 lamps w/ 1.18 BF IS electronic ballastsUse 3100 lumen T8 lamps w/ 1.18 BF IS electronic ballasts Keep power to 0.95 watts / square footKeep power to 0.95 watts / square foot Provide 55 – 80 initial FC on the desksProvide 55 – 80 initial FC on the desks Have a Teacher Control Switch in the front of the classroomHave a Teacher Control Switch in the front of the classroom

PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: A/V operation reduces veiling reflections Screens and TVs look sharpScreens and TVs look sharp Desks are well lightedDesks are well lighted Teacher changes modes without losing eye contactTeacher changes modes without losing eye contact Switch is conveniently located and clearly labeledSwitch is conveniently located and clearly labeled

PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: General Mode: light faces, light vertical wall surfaces, cut glare Notice walls and ceilings lightedNotice walls and ceilings lighted But, look at the pull down screenBut, look at the pull down screen Veiling reflections tend to wash out the image on the screenVeiling reflections tend to wash out the image on the screen To get rid of veiling reflections, the teacher simply pushes one switchTo get rid of veiling reflections, the teacher simply pushes one switch The lighting changes from “GENERAL” to “A/V MODE.”The lighting changes from “GENERAL” to “A/V MODE.”

PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: A/V operation reduces veiling reflections Now, screens and TVs look sharpNow, screens and TVs look sharp Due to the center down light desks are well lightedDue to the center down light desks are well lighted Dimming can be added as an option. Note slide dimmer is clearly labeledDimming can be added as an option. Note slide dimmer is clearly labeled

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

PIER Lighting Research ProgramArchitectural Energy Corporation How the system works: A/V operation reduces veiling reflections The center lamp is covered with 96% reflective reflectorThe center lamp is covered with 96% reflective reflector Directs 100% of light downDirects 100% of light down

PIER Lighting Research ProgramArchitectural Energy Corporation ICLS typical layout LuminairesLuminaires –2-rows –14-foot centers –24-inch suspension –Perpendicular to whiteboard Controls and sensorsControls and sensors –TCC by whiteboard –Occupancy sensor in center of the room –Row switches by door(s) –Control Pack above door InterconnectionsInterconnections –Low voltage –Plug-and-play between TCC, sensors, and Control Pack –Row switches (high voltage)

PIER Lighting Research ProgramArchitectural Energy Corporation New ICLS features include: More efficient luminaires (25% more light)More efficient luminaires (25% more light) 3100 lumen T8 lamps and 1.18 BF electronic ballasts (2-rows light a 32-foot wide classroom)3100 lumen T8 lamps and 1.18 BF electronic ballasts (2-rows light a 32-foot wide classroom) Controls at the front of the classroomControls at the front of the classroom Occupancy sensors with unique “QUIET TIME 1- HOUR ON” mode - optimized for the classroomOccupancy sensors with unique “QUIET TIME 1- HOUR ON” mode - optimized for the classroom Plug-and-play interconnectionPlug-and-play interconnection Full-range support by one manufacturerFull-range support by one manufacturer Options for a wide range of classrooms.Options for a wide range of classrooms.

PIER Lighting Research ProgramArchitectural Energy Corporation Steps to verify ICLS performance included: Building a test system & classroom - DoneBuilding a test system & classroom - Done Installing systems in 23 classrooms in 7 schools in 2 states - DoneInstalling systems in 23 classrooms in 7 schools in 2 states - Done Using independent experts to:Using independent experts to: –Compare actual to expected light levels – Done –Get teachers initial feedback – Done –Get teachers final feedback – Done Monitoring energy usage each day – DoneMonitoring energy usage each day – Done Extending the project to test daylighting controls and impact of a white board luminaire – In process.Extending the project to test daylighting controls and impact of a white board luminaire – In process.

PIER Lighting Research ProgramArchitectural Energy Corporation ICLS is energy efficient

PIER Lighting Research ProgramArchitectural Energy Corporation Data and analysis on energy usage included: Taking readings on energy each minuteTaking readings on energy each minute 14 classrooms successfully monitored14 classrooms successfully monitored Special software developedSpecial software developed –Data was translated into an Excel format –Daily records can be extracted –Savings were identified –Yearly levels were calculated for the school Approximately 15 million data points existApproximately 15 million data points exist Examples of data & analysis followExamples of data & analysis follow

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”

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

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

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

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

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

PIER Lighting Research ProgramArchitectural Energy Corporation Heritage Oak Power Usage

PIER Lighting Research ProgramArchitectural Energy Corporation Country Club Power Usage

PIER Lighting Research ProgramArchitectural Energy Corporation Dudley Power Usage

PIER Lighting Research ProgramArchitectural Energy Corporation Carlmont Power Usage

PIER Lighting Research ProgramArchitectural Energy Corporation ICLS is cost effective AlternativeInstalled costDifferenceEnergyPayback (watts / sq ft) 15 parabolics$2, None ($2.86 / sq ft) ICLS System$2,600 -$ Immediate! (A/V + occupancy)($2.71 / sq ft) Daylight switching$175$ months (each row)($.18 / sq ft) A/V Dimming$500$ years (2 rows, 1-lamp) ($.52 / sq ft) 3 rd row$1,100$ N.A. (3 rows / room)($1.15 / sq ft)

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

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.)

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

PIER Lighting Research ProgramArchitectural Energy Corporation Heritage Oak PIER system (.8 watts / square foot)

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

PIER Lighting Research ProgramArchitectural Energy Corporation Dudley Elementary School (Low Voltage Retrofit,.9 watts / sq ft)

PIER Lighting Research ProgramArchitectural Energy Corporation Steps to build “Awareness” include: - Creating an AIA-CEU course - Finelite - Creating an AIA-CEU course - Finelite - Developing ICLS Spec Sheets - Finelite - Developing ICLS Spec Sheets - Finelite - Negotiating statewide ICLS prices - Finelite - Negotiating statewide ICLS prices - Finelite - Building a statewide sales channel - Finelite - Building a statewide sales channel - Finelite Giving more seminars on Classroom Lighting (CHPS, SCE, CASH, and Light Fair 2005)Giving more seminars on Classroom Lighting (CHPS, SCE, CASH, and Light Fair 2005) Installing ICLS in additional classroomsInstalling ICLS in additional classrooms Creating and distributing more case studiesCreating and distributing more case studies

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