page 1

Lighting Design Lab

Lighting ControlsShaun Patrick Darragh, LC

shaun@lightingdesignlab.com

http://faculty.washington.edu/shaund/ltgcontrols.pdf

•The Basics

•Typical Controls Strategies•Scheduling•Daylight Harvesting•Task Tuning•Adaptive Compensation•Lumen Maintenance•Occupancy Sensing

•Controls Equipment

•Why should we use them?•Energy Savings•Increased Productivity and

User Satisfaction•Energy Codes

•Typical Examples•Offices •Schools•Big Box Retail

Lighting Controls

Montana State UniversityBillings, MT

Power Circuit

The power circuit delivers electricity to the luminaire.

•May be the same grouping as the control zone

•May be independent from the control zone

•If the circuit is the same as the control zone, make sure that only contiguous, like type, luminaires are fed by the same circuit

A Control Zone is a logical grouping of luminaires that are controlled together.

•May be the same grouping as the power circuit

•May be independent from the power circuit•Zoning should be for “like type” luminaires in contiguous areas.•Consider Daylight areas when choosing control zones

•Generally, the more control zones, the more flexible the system will be

•Poor Zoning is one of the most common mistakes in lighting control design

Control Zone / Channel

Reebok World HeadquartersNBBJ Architects

Scene / Look

Courtesy: Lutron

A Scene is a programmed collection of zones set at predetermined light levels

• Repeatable• May use Dimming or Switching•May have adjustable Fade Rates

Occupancy Sensing

Automatically turn lights off when spaces are unoccupied.

Most appropriate for:•Classrooms•Offices•Restrooms•Storage spaces

•Almost any spaces in which occupancy is intermittent and unpredictable.

Used for:•Energy Savings•Convenience

Courtesy: Leviton

page 2

Scheduling

Courtesy: Lighting Control & Design, Paragon

Turn lights off when spaces are unoccupied or daylighted.Most appropriate for:

•Factories•Lobbies•Atria•Corridors•Open Plan Offices•HID•Exterior Lighting

•Most spaces in which occupancy and / or daylight are predictable.

Used For:•Energy Savings•Maintenance

Make effective use of daylight to reduce reliance on electric sources.

More than 90% of commercial space is single story, directly under a roof, or within 15’ of a window wall.

Most of this commercial space should be daylighted and equipped with automatic daylight balancing controls.

Daylighting requires careful integrationof light and architecture.

Effective Strategies:•Automatic dimming controls•User managed shading devices•Automatic Bi-level switching controls•Astronomic Time Scheduling

Daylighting

Lents Boys and Girls ClubPortland, OR

RMB Architects

Task Tuning

Adjust lighting level according to user task needs.Over lighting a task rarely enhances the ability to effectively complete that task and may, in fact, be detrimental to task visibility.

Effective Strategies:• User managed dimming controls• User managed adjustable task lighting•Bi-level switching•User managed daylight blinds•High or Low Ballast Factor

Lower light levels are required when the eye is dark adapted.

Translation: We need less light at night.

Most appropriate for:

•Public Spaces•Retail•Hospitality

Effective Strategies:•Automatic dimming•Automatic Bi-level switching•Astronomic Scheduling

Adaptive Compensation

New York TheatreEdward Hopper

Whole FoodsPlano, TX

Lumen Maintenance

Courtesy: Osram Sylvania

All light sources degrade over time producing less light - this is known as lumen depreciation.

Lumen Maintenance controls allow for a more balanced light level throughout the life of the lighting system.

Using dimming to deliver the maintained design light level, the peaks and valleys of the relamping chart are effectively eliminated.

Effective Strategies:• Automatic dimming• Use lamps with low depreciation

05000

100001500020000250003000035000400004500050000

100A1932TTT

32T854T5HO

320ED28MH

400ED37MH

400ED18HPS

Initial LumensMaintained Lumens

Incandescent and Halogen

Characteristics•Very easy to use with all controls strategies.

•Short lamp life.

•HVAC must be sized to accommodate additional heat loads, particularly in spaces with dimming cabinets.

Considerations•Must be fed with 120V circuit in most cases.

•Dimming may be used to extend lamp life.

Caution: When dimming halogen, the lamps must be driven to full output from time to time to allow the halogen cycle to work.

Courtesy: IESNA

page 3

Low Voltage

Courtesy: Philips

Characteristics•May be used with all controls strategies.

•Short lamp life.

•HVAC must be sized to accommodate additional heat loads, particularly in spaces with dimming closets.

Considerations•Provided with magnetic or electronic transformers.

•Electronic transformers may not be compatible with some dimming controls.

•Must be fed with 120V circuit if dimmed or provided with a 277v to 12v step down transformer for switching only.

•Dimming may be used to extend lamp life.

Caution: When dimming halogen, the lamps must be driven to full output from time to time to allow the halogen cycle to work.

Fluorescent

Courtesy: Philips

Characteristics•May be used with all controls strategies.

•All lamps require a ballast for use.

Considerations•Switching Control

•Ballasts are generally rapid start, instant start, or programmed start types.

•Programmed start ballasts seem to perform best when used with occupancy sensors.

•Bi-level switching control within a luminaire requires at least two ballasts with separate control circuits.

•Burn in new lamps for 100 hours

Fluorescent Dimming

Courtesy: Lutron Electronics

Considerations•Specific Dimming Ballasts are required for continuous dimming control.

•Energy Saving ballasts typically dim to 5-10%

•Architectural ballasts typically dim to 1%

•Control interface types vary - the ballast and control device must be coordinated to ensure proper function.

•Most dimming ballasts will be controlled by a 0-10v low voltage control signal or by a three wire system of dimmed leg, switched leg, and neutral.

•DALI

Note:Control costs have dropped significantly in recent years. In many applications, the installed cost of dimming vs. bi-level switching are equivalent.

HID

Courtesy: Philips, Widelite

Characteristics•Easiest to use with scheduled control strategies.

•May be dimmed or bi-level switched.

Considerations•Lamps require warm up and re-strike time.

•These lamps may be used with relays or occupancy sensors and ballasts designed for bi-level switching.

•HID dimming is possible, but is currently very expensive, requires dimming ballasts, and may affect the perceived color temperature of the lamp.

Line Voltage Switches

Simple manual on / off control

•Characteristics:

•Simple•Easy to Understand•Cheap

•Considerations:

•All lamps frequently left on•Can waste a great deal of energy•Will no longer meet energy codes in some applications unless used with an automatic sweep system or occupancy sensors.

Courtesy: Leviton

Bi-Level Switching

Configure luminaire with 2 or more switched circuits.

•Characteristics:•Simple•Easy to Understand•May be used with an Occupancy Sensor

•Considerations:•All lamps frequently left on•Installed cost may be equivalent to dimming•May change light distribution

Courtesy: Advanced Lighting Guidelines, Lithonia, Focal Point

page 4

Discrete Timers

Switches with programmable time delay shutoff

Characteristics:•Simple•Easy to Understand

Considerations:•May turn off lighting unexpectedly•Do not use in spaces with safety concerns

Typical Uses:•Store rooms•Interactive displays•Areas with infrequent short visits.

Courtesy: Paragon, Tork

Occupancy Sensors

Automatic devices that turn lighting on or off based on space occupancy.

Characteristics:

•Generally ceiling mounted or replace wall switches.•Many versions•Outstanding energy savings

Considerations:•Required in many code jurisdictions•Many configurations possible•Types of areas to be controlled will dictate sensor selection•Must be commissioned and calibrated

Courtesy: Sensorswitch, Unenco

Occupancy Sensors

There are two basic technologies that are used in occupancy sensing devices.

Passive Infrared •Passively scans the field of view for moving heat sources.•Must have line of sight to function•Generally used in smaller, open areas•Great for offices and classrooms

Ultrasonic•Emits high frequency sound waves and measures return waves for Doppler shift.•Does not need line of sight to function•Generally used in larger or obstructed areas•Great for restrooms•May have problems in areas with heavy airflow

Dual Technology•Uses both technologies to maximize sensing capabilities.

Courtesy: Wattstopper, Unenco

Occupancy Sensors

Courtesy: Lightolier, Mytech

Wall Mounted

•Replaces the standard wall switch

•May be automatic or manual on -manual on will result in the greatest savings

•Consult product spec sheets for effective coverage area and field of view

•May control the circuit or use low voltage data wire to provide input to a larger system.

•Some sensors also incorporate an integral fluorescent dimmer

Occupancy Sensors

Courtesy: Wattstopper

Occupancy Sensors

Ceiling Mounted•May directly control the lighting circuit or use low voltage data wire to provide input to a larger system•Will generally require a remote relay pack to directly control lighting•Consult product spec sheets for effective coverage area and field of view•Larger coverage areas

Courtesy: Wattstopper, Advance Lighting Guidelines

page 5

Occupancy Sensors

Kaiser Permanente; Courtesy: Wattstopper

Lane County Mental HealthEugene, ORBalheizer Hubberd Engineers

Automatic photo-sensing control devices that raise or lower lighting levels within a space according to daylight contribution.

Characteristics:

•Full range dimming or multi-level threshold switching•May be discrete system or ties in to a comprehensive control system•Energy savings and light balancing

Considerations:

•Lighting must be properly zoned to maximize benefits

•Dimming is generally preferable to switching for user satisfaction

Daylight Controls

University of Montana Rec CenterDT Architects

Open Loop

Open loop sensors look for available daylight only.•Easier to Commission•Less precise•Better performance with top light than side light

Open Loop

Lane County Mental HealthEugene, ORBalhizer Hubberd Engineers

Open Loop Closed Loop

Closed loop sensors look for available daylight and electric light on a workplane.•More difficult to Commission•More precise

page 6

Closed Loop

Sensor placement is critical – avoid direct view of indirect luminaires by sensors

Closed Loop

Courtesy: Lawrence Berkley Labs

The ceiling mounted photosensor sees both electric light and daylight on the workplane, adjusting electric lighting intensity as required to maintain design light levels.

Closed Loop

Ash Creek Middle SchoolIndependence, ORBoora Architects

Daylight Controls

Electricity saved is during peak demand times when kWh charges can be many times higher than off peak. Courtesy: Lutron

Lumen Maintenance Controls

Closed Loop photo-sensing controls that maintain design lighting levels within a space.

Characteristics:

•Full range dimming or bi-level threshold switching.•May be discrete system or ties in to a comprehensive control system.•Energy savings and light balancing•Should work in conjunction with other control strategies.

Considerations:

•Light sensor should be placed to view work surfaces without direct contribution from daylight or luminaires.•Dimming is preferable to switching for user satisfaction. Courtesy: Osram Sylvania

Wallbox Dimmers

Manual control devices that raise or lower lighting levels within a space.

Characteristics:•Devices replace standard wall switches.•May control incandescent or fluorescent •Many versions available•Potential energy savings•Great for user satisfaction•Easy to understand

Considerations:•Confirm power rating with load•May require auxiliary power handling devices •May be used as data input for larger control systems Courtesy:Lightolier, Lutron

page 7

Preset Dimming Systems

Discrete dimming systems.

Characteristics:•2-4 Dimmers are integral to the unit•4-16 Scene recall function•May include scheduling capability•Will accept input from other devices including occupancy sensors and photo-controllers

Considerations:

•Generally 20A Maximum•May require considerable commissioning•Does not require remote dimming panel•May require interface control for fluorescent•May require coordination with AV systems

Courtesy: Lutron, Lightolier

Preset Dimming Systems

Architectural dimming systems.

Characteristics:•Generally Modified Theatrical Systems•Dimmers are located in remote cabinets•Advanced programming and playback features•May include scheduling capability•Will accept input from occupancy sensors, photo-controllers, and other systems•Astronomic Time Clock

Considerations:•Will require considerable commissioning•Dimming modules may be load type specific•May require coordination with AV systems•May require digital protocols like DMX-512

Courtesy:Colortran

Preset Dimming Systems

Courtesy:Entertainment Technology, ETC

Programmable touch screen control stations offer amazing flexibility, but may be difficult to understand for some users..

Preset Dimming Systems

Courtesy: ETC

Stick with slider stations in areas which may be used by many people

Low Voltage Relay Systems

On/off controls actuated by low voltage wall switches or digital processor.

Characteristics:

•On/off switching control only.•May be discrete hardwired or scaleable digital system.•Generally includes scheduling capability•Will accept input from occupancy sensors, photo-controllers, and other systems•Astronomic Time Clock

Considerations:•May require considerable commissioning•Simplest method of whole building control•Home run circuiting required for each zone•Digital control is simpler than hard wired

Courtesy: Advanced Lighting Guidelines

Low Voltage Relay Systems

A homerun pair to the relay panel is required for each discrete control zone.

page 8

Low Voltage Relay Systems Distributed Systems

Courtesy: Leviton, Advanced Lighting Guidelines

Characteristics:•May be stand alone or fully integrated.•Will be a scaleable digital system.•Will incorporate scheduling capability•Will accept input from devices including occupancy sensors and photo-controllers•Inherently Flexible•Users can control lighting from their desktops

Considerations:•Will require considerable commissioning•Coordinate digital protocol - LON, BacNet•Home run circuiting will not be required for each control zone

Distributed Controls

Courtesy: Wattstopper

Distributed Systems

Courtesy: Lutron Electronics, Leviton

Distributed Systems

A single circuit homerun may feed and entire floorplate if control is distributed.

Dali

Digitally Addressable Lighting Interface• Open Source Standard• Each ballast has a unique address• Maximum Flexibility• Maximum Commissioning

• Photocell • Dimming• Desk top control

Energy management software • Lumen Maintenance• Scheduling• Data Logging• Load Shedding

page 9

Vertically Integrated Luminaire Systems

Work station lighting systemOn-board electronic controls

• Occupancy Sensor• Photocell • Dimming• Desk top control• DALI Control Protocol

Energy management software • Lumen Maintenance• Scheduling• Data Logging• Load Shedding

Task/ ambient lightingCourtesy: Ledalite, Lightolier

Energy Economics & Building Design -1983

Building Management Systems

Comprehensive Building Controls

Characteristics:

•May be stand alone or fully integrated.•Will be a scaleable digital system.•Will incorporate scheduling capability•Will accept input from occupancy sensors, photo-controllers, and other systems•Astronomic Time Clock

Considerations:

•Will require considerable commissioning•Coordinate digital protocol - LON, BacNet•Home run circuiting may be required for each control zone Courtesy: Advanced Lighting Guidelines

Why Use Controls?

Energy Savings•Lights turned down or off when not required saves electricity, reduces greenhouse gas emissions, and saves money.

Maintenance Savings•Turning of lighting when not required may extend lamp life and lower maintenance costs.

Productivity Gains•Tuning lighting to appropriate levels can increase visibility and enhance worker productivity.

Employee Satisfaction•Accessible lighting controls allow employees more control over their working environment.

Energy Codes•Most energy codes now require the use of lighting controls.

Judith D. Jennings, Francis M. Rubinstein, Dennis DiBartolomeo, Steven L. Blanc

http://eetd.lbl.gov/btp/pub/LGpub.html

• Typical Office Building • 7 Month Study Period• 5 Controls Scenarios• April 2000

Single Level Switching 0%

Bi-Level Switching 23%

Occupancy Sensors 20-26%

Dimming - Photo Sensors 27%

Occupancy and Photo Sensors 46%

Dimming -Task Tuning 23%

Control Strategy Energy Saved

... the energy savings due to occupant sensing vs. dimming depended on the behavior of occupants.

In offices whose occupants tended to stay at their desks all day, dimming controls saved more energy, and vice versa.

Courtesy: Lawrence Berkley National Laboratory

Comparison of Control Options in Private Offices in anAdvanced Lighting Controls Testbed

Courtesy: Advanced Lighting Guidelines

Typical Savings Productivity

We all like to have control over our work environment.

User controllable lighting can:•Increase user satisfaction•Allow users to select lighting that is most comfortable•Tune lighting to suit individual tasks•Minimize user complaints to maintenance staff.

Frequently users will dim to a lower lighting level than current practice recommends when given the option.

05

101520253035404550

Compu

ters

Daylig

ht

Readin

g

Atmos

phere

Energy

Reasons given by employees for adjusting lighting

Courtesy: Lighting Research Center

page 10

Productivity

Up to 92% of business costs are labor - salary / benefits

6% Are Operations Expenses

2% Are Capital Expenses

•$30k/yr ($75k) worker• 150 SF space/worker

($15,000 space)

• 20% productivity ++

• $15,000 in first year!!!

Better Lighting quality more than pays for itself in increased productivity.

Energy Codes

Most Energy Codes now include lighting control requirements. State and local codes can vary so confirm requirements before design.

Typical Requirements:

•User accessible controls• Automatic shutoff controls

•Occupancy Sensing•Time of Day Scheduling

•Maximum Zone control areas

Daylight Zone Control•Separate Control Zoning•Bi-Level Switching•Automatic Dimming

Exterior Lighting•Photocell Control•Time Clock Shutoff

System Commissioning Courtesy: Washington State NREC

System Commissioning

Lighting Systems must be Commissioned

Commissioning is defined as “a systematic process of ensuring that all building systems perform interactively according to documented design intent and the owner’s operational needs”

Montana State UniversityBillings, MT

System Commissioning

Typical Commissioning Items:

•Calibrate Occupancy / Daylight Sensors•Calibrate Lumen Maintenance Levels•Program Time of Day Scheduling•Program Preset Dimming Scenes•Interface with BMS / Fire / Security•Interface with AV systems•Program User PC Controls•Explain and Demonstrate System Functions and Programming to Owner

System Commissioning

Courtesy: Advanced Lighting Guidelines

Typical Controls Matrix

Courtesy: Advance Lighting Guidelines

http://www.newbuildings.org/lighting.htm

page 11

Private Office

Courtesy: Lighting Research Center

Typical Controls:•Daylight Sensors

•Occupancy Sensors

•Manual Dimmers

•Desktop Controls

•Sweep Control

Open Plan Office

Courtesy: Advanced Lighting Guidelines

Typical Controls:•Daylight Dimming

•Occupancy Sensors

•Sweep Control

Lee Metcalf BuildingHelena, MT

Existing System•Recessed 2x2 (3) lamp parabolics

•Bi-level manual switching

•UPD: 1.6 W / Sq. Ft.

Proposed System

•Pendant (1) lamp T5HO indirect on 15’ Centers

•Daylight Dimming

•Lumen Maintenance

•Adaptive compensation•Time of day scheduling•UPD: 0.8 W/ Sq. Ft.

Open Plan Office Conference Room

Courtesy: Advanced Lighting Guidelines

Typical Controls:•Occupancy Sensors

•Sweep Control

•Multi Scene Preset

•Manual Dimming

•AV Interface

Conference Room

Typical Controls:•Occupancy Sensors

•Sweep Control

•Multi Scene Preset

•Manual Dimming

•AV Interface

Reebok World HeadquartersNBBJ Architects

Classroom

Strawberry Vale School Patkau Architects

Typical Controls:•Daylight Dimming

•Occupancy Sensors

•Manual Dimming

page 12

Classroom

Courtesy: Advanced Lighting Guidelines

Scandinavian School; Fresno, CACourtesy: Peerless

Typical Controls:•Daylight Dimming

•Occupancy Sensors

•Manual Dimming

Gymnasium

DT ArchitectureUniversity of Montana Recreation Center

Original Design:

•Automatic Time Control – not programmed to astronomic daylight

•Poor Zoning

Gymnasium

DT ArchitectureUniversity of Montana Recreation Center

Retrofit Improvement:

•Automatic Time Control –programmed for astronomic daylight

•Proper Zoning

Library

Spokane Public Library

Poor Daylight Control

•Luminaires are turned off rather than dimmed resulting in excessive contrast between dark ceiling plane and bright glazing

•24 Hour “emergency” circuit produces an unfortunate patchwork

Lecture Hall

Kane Hall University of Washington

Candela

Typical Controls:•Occupancy Sensors

•Sweep Control

•Multi Scene Preset

•Manual Dimming

•AV Interface

•Note: Downlights use QL induction fluorescent lamps. Dimming is currently not possible with this lamp type.

University of Montana Rec CenterMissoula, MTDT Architects

•Luminaires were equipped with 150 watt metal halide lamps resulting in direct glare and strike/restrike control problems.

•Poor Zoning resulted in needing to keep these luminaires energized in spite of abundant daylight.

Retrofit Improvements:

•Replace metal halide lamps with 42 watt triple tube compact fluorescent lamps saving energy, reducing glare, and simplifying control.

•Zoning was corrected to allow astronomic time control

Poor Daylight Control

page 13

Warehouse

Courtesy: Wattstopper

Typical Controls:•Occupancy Sensors

•Sweep Control

•Daylight Multi-level switching

•Note: Using fluorescent sources will simplify controls and lead to improved lighting quality and decreases energy consumption in most industrial applications.

Factory

Typical Controls:•Occupancy Sensors

•Sweep Control

•Daylight Multi-level switching

•Note: Using fluorescent sources will simplify controls and lead to improved lighting quality and decreases energy consumption in most industrial applications. Jorgenson Forge

Seattle, WA

Low Bay Luminaires

Hill Air Force BaseCourtesy: Sportlight

Typical Controls:•Occupancy Sensors

•Sweep Control

•Daylight Multi-level switching

•Note: Multiple lamp compact fluorescent sources were used to simplify multi-level lighting approach while maintaining “low bay” lighting.

•Linear fluorescent luminaires may have been a better choice for lowered cost and maintenance.

Low Bay Luminaires

Courtesy: 1st Source,

Inductive fluorescent lamps may be used to provide low bay lighting that is “instant on/off” simplifying use of occupancy sensors.

T5 Fluorescent

Courtesy: The Lightedge

Alaska Distributors

page 14

Alaska Distributors

Courtesy: 1st Source

Inductive fluorescent luminaires may be used to provide low bay lighting in cold storage areas that is “instant on/off” simplifying use of occupancy sensors.

Pactiv Corp

Pactiv Corp Pactiv Corp

Pactiv Corp

Typical Controls:•Occupancy Sensors

•Sweep Control

•Multi Scene Preset

•Manual Dimming

•AV InterfaceLilis Business CenterUniversity of Oregon

James Benya

page 15

Big Box Retail

Wal-Mart, Lawrence Kansas, reported “significantly higher” sales in the skylit part of the store.

The Wall Street Journal, Nov. 20, 1995

•Most retail ambient lighting systems are linear fluorescent.

•Daylighting controls including stepped switching and dimming cansignificantly decrease energy usage.

•Electricity saved is during peak demand times when kWh charges can be many times higher than off peak.

Vertically Integrated Design

Personal Control Features:Personal Control Features:

• Direct/ Indirect Pendant Luminaire

• Task light: 2T8-PS Dimmable EB (64W)/ 100%-5%

• Ambient light: 1T8-PS EB (31W)/ ON/OFF switching

• Included Occupancy Sensor

• Included Photocell Sensor

BC Hydro Case Study

Courtesy: Ledalite, B.C. Hydro

Standard Troffer Layout

• 2x4 Parabolics

• 24 Luminaires

• 72 lamps

• ~2300 watts

Courtesy: Ledalite, B.C. Hydro

Workspace Specific Layout

• Direct Indirect

• 13 Luminaires

• 39 lamps

• ~1250 watts

Courtesy: Ledalite, B.C. Hydro

Network Connected

Personal Control software is available on all desktop computers

Ceiling Plane

LIGHTING CONTROL NETWORKRS 485 cable

LOCAL AREA NETWORK

LAN Server

Master Control Unit

RS 232 cable

MCU

Luminaires

Power Circuit

Manager Software

Interface computer & software (24hrs)

Courtesy: Ledalite, B.C. Hydro

page 16

Full Light Output

• Indirect component remains on to keep the ceiling evenly illuminated

• Photo Sensor looks to work plane for lumen maintenance control

• Occupancy Sensor energizes task component since work station is occupied

• Task component is set to full light output by the user

BC Hydro Case Study

Courtesy: Ledalite, B.C. Hydro

BC Hydro Case Study

Manually Dimmed

• Indirect component remains on to keep the ceiling evenly illuminated

• Photo Sensor lumen maintenance control is over-ridden by manual dimming control

• Occupancy Sensor energizes task component since work station is occupied

• Task component is set to lower light output by the user

Courtesy: Ledalite, B.C. Hydro

Personal Dimming Control

•On-screen control panel

• Users select preferred light level

• Ceiling light stays constant

BC Hydro Case Study

Courtesy: Ledalite, B.C. Hydro

BC Hydro Case Study

Daylight Dimmed

• Indirect component remains on to keep the ceiling evenly illuminated

• Photo Sensor looks to work plane for daylight contribution – dimming electric light output according to available daylight

• Occupancy Sensor energizes task component since work station is occupied

• Task component may be set lower than the upper bound set by the daylight sensor Courtesy: Ledalite, B.C. Hydro

Task component off

• Indirect component remains on to keep the ceiling evenly illuminated

• Photo Sensor is not active

• Occupancy Sensor extinguishes task component since no user is present

BC Hydro Case Study

Courtesy: Ledalite, B.C. Hydro

Energy Management Reports

2002

Courtesy: Ledalite, B.C. Hydro

page 17

Vertically Integrated Luminaire Systems

Courtesy: Ledalite, B.C. Hydro

100%

60%

22%0%

20%

40%

60%

80%

100%

Energy c onsumed

April - May 2001

Typical recessed layout - no controlsDirect-indirect layout - no controlsErgolite - full controls

Lighting Controls Resources

•Illuminating Engineering Society: iesna.org•Lighting Controls Association: aboutlightingcontrols.org•Lighting Research Center: lrc.rpi.edu/•Designlights Consortium: designlights.com•Energy Design Resources: energydesignresources.com•Lawrence Berkeley Labs: eetd.lbl.gov/btp/lsr/index.html•Digital Addressable Lighting Interface: dali-ag.org/•Some Equipment Manufacturers•Colortran: colortran.com•Douglas: douglaslightingcontrol.com•ETC: etcconnect.com•LC&D: lightingcontrols.com•Leviton: leviton.com•Lightolier Controls: lolcontrols.com •Lithonia: lithonia.com•Lutron Electronics: lutron.com•Novitas: novitas.com•Sensorswitch: sensorswitch.com•Payne Sparkman: paynesparkman.com•Unenco: unenco.com•Wattstopper: wattstopper.com

•Some Dimming Ballast Manufacturers•Advance: advancetransformer.com•ESI: esavings.com•Holophane: holophane.com•Lutron: lutron.com•Osram Sylvania: sylvania.com•Payne Sparkman: paynesparkman.com•Widelite: widelite.com

Additional Resources

Northwest Energy Efficiency Alliance: www.nwalliance.orgNorthwest Energy Education Institute: www.nweei.orgEnergy Ideas Clearinghouse: www.energyideas.org

US Green Buildings Council: www.usgbc.orgInstitute for Research in Construction: www.nrc.ca

Lighting Research Center: www.lrc.rpi.eduIlluminating Engineering Society: www.iesna.orgElectric Power Research Institute: www.epri.com

US EPA Energy Star: www.energystar.govWhole Building Design Guide: www.wbdg.org

Light Forum: www.lightforum.com

Lighting Design Lab

400 East Pine St.Suite 100

Seattle, WA 98122206.325.9711800.354.3864

206.329.9532 fax

www.lightingdesignlab.com

Lighting Design Lab Services

• Electric Lighting Consultation

• Daylighting Consultation

• Full Scale Mock-Up Facility

• Light Sources Room With Color Boxes

• Luminaire Displays and Vignettes

• Catalogue and Text Library

• Classes and Tours

• Newsletter and Mailing List

• Web Site - www.lightingdesignlab.com

Our Sponsors

• Northwest Energy Efficiency Alliance• Seattle City Light• Puget Sound Energy• U.S. Department of Energy• British Columbia Hydro• Snohomish County P.U.D.• State of Alaska• Tacoma Public Utilities

The Alliance is a non-profit group of electric utilities, state governments, public interest groups and industry representatives working to bring affordable, energy-efficient products and services to the marketplace

page 18

Don’t Forget the Evaluations