Lighting Research Program

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Lighting Research Program

• Technology Highlights
• May 2005

Judie Porter, CEM, LEED AP Architectural
Energy Corporation
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What is the Lighting Research Program?

• Two-year 5.2 million RD program
• developed and introduced energy-efficient
  lighting technologies into the marketplace.
• Set of diverse projects
• included 15 technical and three market connection
  projects.
• Unique partnership sponsored by the California
  Energy Commission
• managed by Architectural Energy Corporation
  involved various researchers and manufacturers.

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What Is the Value of the LRP?

• For California citizens, the LRP provided the
  opportunity to
• Save energy, lower peak electricity demand, and
  reduce pollution.
• Integrate research with market connection
  activities.
• Leverage expertise and co-funding from lighting
  manufacturers and organizations.

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Integrated Classroom Lighting System
Product A high-performance lighting system with
integrated sensors and controls for classrooms
and training facilities.

• Basic Option
• Direct/indirect fixtures that use 96 reflective
  white paint to improve fixture efficiency.
• Two rows of fixtures for maximum savings with
  manual switching for daylighting control.
• 3100 lumen super T8 lamps and 1.18 BF electronic
  ballasts (2-rows light a 32-foot wide classroom).

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Integrated Classroom Lighting System

• Better and Best Options
• Dimming with teacher control switch (TCS) to
  lower light levels for A/V presentations and
  provide Quiet time mode.
• Addition of photosensors to provide automatic
  daylight control.
• Third row of fixtures added for better
  uniformity on desks, ceilings, and walls (.88
  ballast factor).

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Integrated Classroom Lighting System

• Test classrooms installed in six California
  schools 19 classrooms monitored for entire
  school year.

Energy Use Before 1.75 watts / sq foot
Energy Use After 0.85 watts / sq foot
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Integrated Classroom Lighting System

• Results
• Reduced energy use by 30 to 50.
• Reduced glare and eyestrain for teachers and
  students.
• Improved light levels on teaching walls.
• Increased teacher satisfaction through better
  controls.
• A/V mode had calming effect on students.

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Integrated Classroom Lighting System

• Economics
• Installed cost (2.71/sqft) for a two row system
  is less than a typical layout of 15 Parabolic
  Troffers (2.86/sqft).
• The best system (3 rows with A/V) is
  approximately 3.81/sqft.
• Two row system helps school districts stay within
  construction budget yet provide quality lighting.
• Manufacturers are Finelite and The Watt Stopper
  (TWS).

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LED Exterior Fixtures

• Product Exterior lighting systems integrating
  quality optics with solid state technology and
  controls.
• The California Lighting Technology Center (CLTC)
  developed a hybrid LED/incandescent fixture with
  an integrated occupancy sensor.
• Incandescent used because of low first cost
  versus higher cost of CFLs CFL option may be
  offered.
• Exceptional optics and energy efficiency.
• Applications - commercial / residential entry and
  walkways (apartments, college campuses).

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LED Exterior Fixtures

• How it works
• Amber LED array runs continuously during the
  night.
• Occupancy sensor turns on the incandescent lamp
  when motion is detected.
• After a few minutes, the occupancy sensor turns
  the incandescent off.
• There is always light in the coverage area.

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LED Exterior Fixtures

• Results
• LED array uses 5 W per nighttime hour. Assuming
  only 1 burn hour per night, incandescent lamp
  consumes 75 W. Total 125 W over 10 hours.
• With 50,000 hours of life, LEDs should last 13
  years. Less use each night extends the
  incandescent lamp life.
• LEDs provide sufficient light to identify the
  surroundings.
• Incandescent lamp provides expected outdoor light
  levels.

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LED Exterior Fixtures

• Manufacturing Partners
• Shaper Lighting - products available.
• The Watt Stopper -LED/PAR lamp security lights
  available late 2005.
• Demonstrations underway w/National Park Service
  and Sacramento apartments.

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Bi-level Stairwell Fixtures

• Product Integrated ultra-sonic motion sensor
  dims lamps to save energy when stairwells are
  unoccupied.
• Applications - commercial interior stairwells
  with no windows (retrofit / new construction),
  storage areas.
• Reduces energy use in stairwells virtually 24/7.
  LaMar Lighting developed product.
• Provides life-saving light when building
  occupants need it for emergency egress.
• Designed to provide 1 fc as required by local and
  national code officials also meets new ANSI code
  (10 fc).

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Bi-level Stairwell Fixtures

• Features
• Ballast options 5,10, or 33 of full light
  output.
• Varying fixture styles, lamps, voltages with
  integrated occupancy sensor.
• Example consumption full light output (two 4 T8
  Lamps) 62 W stand-by output (10) 13 W.

• Four buildings installed and monitored UC
  Berkeley (10 stories), Alameda County (11
  stories), SBC (10 stories), Chiron (5 stories).
  Building occupants surveyed.

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Bi-level Stairwell Fixtures
Payback calculations based on 0.155/ kWh

• Project Results
• Dependent on dimming and lamp configuration.
• Retrofit paybacks are 4 to 10 years.
• New construction paybacks are 2 to 8 years.
• Occupant response positive.

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Energy Efficient CFL Downlighting

• Product An energy efficient plug and play
  downlighting system using CFLs.
• The CLTC developed the system with Lithonia.
• Applications - residential and commercial
  downlighting areas (both retrofit and new
  construction).
• Sacramento homebuilders have installed the new
  residential units in 400 homes.
• Currently, commercial retrofit product available.

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Energy Efficient CFL Downlighting

• Features
• Plug-and-play wiring greatly reduces costly
  wire-nut connections.
• Quick, simplified andflexible optical head
  mounting.
• Two-lamp ballast cuts ballast costs in half.

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Energy Efficient CFL Downlighting

• Benefits
• Easy to install in t-bar ceilings.
• Energy savings 60 to 75 over incandescent.

Power (Watts) 26.8 Lamp Lumens 1800 Fixture
Lumens (Lm/W) 1341 Fixture Efficacy
50.04 Fixture Efficiency 74.5

• Longer lamp life.
• Output greater than 65W R-Lamp downlight (1050
  lumens) or 75W R-Lamp downlight (1200 lumens).
• Uniform light levels with the opportunity of
  using less units per area.

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More PIER LRP Technologies

• Smart bathroom fixture LED nightlight switch
• LEDs and integrated occupancy sensor provides
  low level lighting when area is unoccupied.
• Applications - large scale hotels and assisted
  living facilities.
• Reduces energy use yet provides ability to see at
  night.
• Energy savings 45 to 50.
• SpecLight and The Watt Stopper.

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More PIER LRP Technologies

• New classroom photosensor handheld calibration
  tool (TWS)
• Calculates task to photosensor ratios for
  electric lighting and daylighting.
• Can export readings for cxing reports.
• Expected in 2006.
• Low glare outdoor wall sconce (Gardco)
• 100 W ceramic MH w/electronic ballast.
• Energy savings 30 Provides better coverage.
• Expected late 2005.

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More PIER LRP Technologies

• Portable fixture for private or open office
  spaces (CLTC and Finelite)
• Integrates task/ambient lights with occupancy
  sensor.
• Delivers light where and when needed.
• Maximizes occupant comfort and energy savings 40
  to 60.
• LED task lighting (LBNL and Luxo) and low profile
  elevator lighting (LRC)
• Long lamp life and reduced energy use.
• Excellent durability and highly controllable.

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Lighting Research Program

• Information on the LRP products is available
• on the following web sites
• www.energy.ca.gov/pier/buildings/projects/500-01-0
  41-0.html
• www.archenergy.com/lrp