ExponationAIA Provider Number: 70119700

Lighting the Classroom of the Future: a D.O.E. ProjectLEDSSMW16-XXX

Tom Ward, Finelite, Inc03.28.17

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Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner ofhandling, using, distributing, or dealing in any material or product._______________________________________Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

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The Department of Energy has initiated a research project to develop and test novel SSL luminaire designs for the classroom of the future. This presentation will present key findings from this research effort. Topics covered will include how major drivers such as new trends in lighting and controls, new trends in learning, new requirements for the classroom, and a new understanding of human centric lighting, change the way we need to light classrooms. The presentation will cover the DOE-proscribed goals for energy efficiency, teacher control over lighting intensity and CCT, lumen maintenance and color stability, luminaire performance and lighting levels on classroom desks and walls. After the presentation, the attendee will understand how to meet or exceed the DOE goals.

CourseDescription

LearningObjectives

1. Identify the challenges of lighting the classroom of the future with its multi-purpose spaces, advanced communications technologies, and multi-generational occupants and become familiar with the DOE design for the classroom of the future including layout, flexibility, and lifetime of materials and luminaires.

2. Examine the DOE performance goals including teacher control of intensity and color (CCT), balance of daylight and electric light, and centralized control.

3. Analyze the DOE performance metrics including luminaire efficacy (LPW), flicker and power quality, lifetime and color stability, and vertical and horizontal illuminance levels in the classroom.

4. Compare the results to date of room-level performance when lighting for students, for the aging eye, for audio/visual and whiteboard modes, to balance daylight, for maximum alertness and maximum calming.

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Lighting the Classroom of the FuturePresented by: Tom Ward LC, IES Member Emeritus

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Start With:

Lighting

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Lighting Has Quality

Project: Alexander Graham Bell Elementary SchoolLocation: Kirkland, WAArchitect: DLR Group

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Lighting Value Has Changed Due to LEDs

Project: Sangre de Cristo SchoolLocation: Mosca, ColoradoArchitect: Klipp Architecture Planning Interiors

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Lighting From LED Luminaires Should Last 50 Years

Project: DSST Conservatory Green Middle SchoolLocation: Denver, COArchitect: RB+B Architects

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Lighting Can Become Part of the Structure

Project: Newark Tech - Essex County Vocational Technical SchoolLocation: Newark, NJArchitect: Comito Associates PC

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Lighting Can Be Tailored To The Space

Project: ChildServe CenterLocation: Johnston, IAArchitect: SVPA Architects

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Lighting Can Make The Space Dynamic

Project: Belmont University Two Oaks HallLocation: Nashville, TNArchitect: EOA Architects

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Then, Re-Think:

Learning

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Learning is Everywhere

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Learning is Individual

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Learning is Student Centric

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Learning is Multiple Small Groups

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Plan for Change:

Classroom

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Flat Panel Monitors

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Luminous Teaching Surface

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Tablets

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Streaming Content

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Movable Furniture

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Soft Furniture

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Whiteboards and Writeable Walls

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Student Presentations Replace Teacher Lectures

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Allow for Expanding Usage:

School & Community

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Community Use

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Lifelong Learning

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Lighting The Classroom Of The Future

Introducing the 4-Step Research

Project

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Step 1: Classroom Design Selected

Out of thousands of

choices, the following illustrative layout was chosen.

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Layout Includes:

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Walls and Windows - 50-year Life:

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Things on The Wall – 10-year Life:

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Furniture Can Rearrange Daily:

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Furniture Can Rearrange Daily:

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Furniture Can Rearrange Daily:

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Furniture Can Rearrange Daily:

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Step 2: Set Performance Goals

- Teacher control of intensity and color (CCT)

- Balance daylight and electric light

- Local and central control

- Vertical and horizontal illuminance levels to ensure excellentquality light

- Performance Metrics:

o Luminaire efficacy (LPW)

o Flicker and power quality

o Lifetime and color stability

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Step 3: Research Activities

- Reviewed and selected the LED

- Built arrays for 2-source color tuning

- Built and tested multiple luminaires

- Developed and built plug-and-play controls

- Developed lighting layouts

- Constructed a full-sized mock-up classroom

- Installed the luminaires and controls

- Made measurements in the mock-up classroom

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Step 4: Verified Results

- LED package performance- LED Array performance- Luminaire performance- System performance- Room level performance

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LED Package Performance

- Ra: 80 & 90 CRI- 167 LPW efficacy - CCTs: 2700K & 6500K- LM80 data- Commercially available

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LED Array Performance

- Excellent spectrum quality

- 2700 – 6500K range- Multiple form factors- Plug-and-Play- Serviceable

2700K: CRI 83, R9 10 6500K: CRI 85, R9 19

Two Source 3500K: CRI 87, R9 36

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TM30 90 CRI 2-Source Tunable White Array

2700KRF = 91RG = 101

3500KRF = 91RG = 103

6500KRF = 89RG = 101

Reference Illuminant Test Source

COLOR DISTORTION ICON 2700K

Reference Illuminant Test Source

COLOR DISTORTION ICON 3500K

Reference Illuminant Test Source

COLOR DISTORTION ICON 6500K

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Step 4: Research Results to Date

- Luminaire performance- Lumen maintenance- Color maintenance- Efficacy > 120 LPW- Styles: recessed, pendant and

whiteboard for both

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Lifetime and Color Stability

0

0.001

0.002

0.003

0.004

0.005

0.006

0 2000 4000 6000 8000 10000D

elta

u’v

’

Time, hours

Mid-Power, LM-80 DataChromaticity Shift

55C, 100ma

Measured Performance

TM-21 Performance CalculationL90 > 100,000HL70 > 398,000H

Ts = 55ci = 100 ma

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Step 4: Research Results-to-DateSystem

DMX Central Control Example: Scheduling Events Reporting Administrative Tasks

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Step 4: Research Results-to-Date

Room Level Performance

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Lighting – “Window” Contribution (SF Bay Area June Gloom)

6 fc 1 fc2 fc

1 fc

2 fc

5 fc

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Lighting – Whiteboard Luminaire Contribution

+20fc+20fc

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Lighting – Ceiling + Whiteboard + “Daylight”CCT 4250K / Ceiling: 0.27 W/sq ft at 75% / Whiteboard: 0.19 W/sq ft at 100% / Total: 0.46 W/sq ft

51 fc

49 fc

40 fc

61 fc

30 fc

50 fc

35 fc

56 fc

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Lighting To Balance Daylight – (Focus Group Input)CCT 5450K / Ceiling: 0.31 W/sq ft at 80% / Whiteboard: 0.19 W/sq ft at 100% / Total: 0.50 W/sq ft

56 fc

55 fc

56 fc

66 fc 32 fc

56 fc

54 fc

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Lighting – AV ModeCCT 3750K / Ceiling: 0.04 W/sq ft at 30% / Whiteboard: Off / Total: 0.04 W/sq ft

11 fc

9 fc

9 fc 6 fc

7 fc

5 fc

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Lighting – Screens and TabletsCCT 3750K / Ceiling: 0.17 W/sq ft at 60% / Whiteboard: 0.05 W/sq ft at 50% / Total: 0.22 W/sq ft

34 fc

31 fc

29 fc 19 fc

30 fc

24 fc

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Lighting – Maximum AlertnessCCT 6500K / Ceiling: 0.48 W/sq ft at 100% / Whiteboard: 0.19 W/sq ft at 100% / Total: 0.67 W/sq ft

88 fc

83 fc

83 fc 49 fc

82 fc

73 fc

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Lighting – Calming ModeCCT 2700K / Ceiling: 0.005 W/sq ft at 10% / Whiteboard: 0.002 at 10% / Total: 0.007 W/sq ft

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6 fc

5 fc

9 fc 5 fc

4 fc

6 fc

Lighting – Calming Mode

CCT 2700K 6500K

Ratio of Melanopic Stimulation

1 2.35

Eye Level Illuminance 5 fc 49 fc

Ratio 5 109 5

109

0

40

80

120

Calm Max Alert

Rel

ativ

e Va

lue

Pre-set

Equivalent Melanopic Lux

Calm

Max Alert

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Next Steps Include:

– Completing stress tests on LED arrays

– Conducting additional focus groups

– Finalizing the user interface

– Documenting affordability

– Publishing the final report

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One Key Finding is Absolutely Clear

LEDs Make Quality

Lighting Affordable For

All Classrooms

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Schools Are Built To Last Decades

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LED Luminaires Should Last 50 years

Project: Alexander Graham Bell Elementary SchoolLocation: Kirkland, WAArchitect: DLR Group

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Long Life Changes the Value Equation

Proper LED luminaire and system design gives the school;- Decades without maintenance- Decades of lower energy costs- “Future Proof” operation

• Tunable White Available Today• Teacher can change pre-sets as teaching changes• Wall-mount and smart phone control• Local and Central Control• IoT enabled• Cost effective today and cost effective for tomorrow

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This Means We Must Educate, Educate, Educate

- No other building element has undergone such rapid change

- Massively more value at lower cost- School districts need to know this- Architects need to know this- Lighting Designers and Specifiers need to know this- Engineers need to know this- Contractors need to know this- Collaboration is needed to make this happen

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This concludes The American Institute of Architects Continuing Education Systems Course

Finelite, Inc.30500 Whipple Road

Union City, CA 94587-1530

Ph (510) 441-1100Fax (510) 441-1510

Tom Wardtom.ward@finelite.com

www.finelite.com

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Research Partners Include:- US DOE (DE-FOA-0001171)- RTI (lead researcher)- PNNL (expert advice)- Samsung (LEDs, monitors, data)- Finelite (full company support)