Most new downlights in the commercial sector and the residential market use compact fluorescent lamps (CFLs), yet a large number of incandescent downlights remain in operation. Additionally, many builders and designers who could specify recessed downlight fixtures instead opt for larger fluorescent recessed troffers with either parabolic reflectors or prismatic lenses, which can produce a high level of glare.
Researchers from California Lighting Technology Center (CLTC) partnered with Lithonia Lighting (Acuity Brands) to develop two CFL downlight systems—one each for commercial and residential markets—that reduce both energy and installation costs while improving lighting quality. In these systems, two lamps (one per recessed can) are driven by one ballast. The residential version uses 26W lamps while the commercial version uses 26W, 32W, or 42W lamps. Overall wattage is reduced while maintaining appropriate light levels and often improving light quality by installing this innovative system.
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| The Advanced CFL Downlight system utilizes a novel master/remote wiring approach |
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Lobby at Meyer Hall Advanced CFL Downlights installation, University of California, Davis |
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Hallway at CSU San Marcos Center for Children and Families |
OBJECTIVE:
To develop two CFL downlight systems—one each for commercial and residential markets—that reduce both energy and installation costs while improving lighting quality
APPLICATIONS:
- Residential: Kitchens, hallways
- Commercial: Hallways, lobbies, meeting spaces, accent lighting
DESCRIPTION / FEATURES:
- Energy savings: 15% compared to T12 fluorescent lamps, 50% compared to incandescent lamps, 75% compared to mercury vapor (HID)
- The CFL Downlight system utilizes a novel master/remote wiring approach which results in reduced energy and installation costs
- The two lamps, one per recessed can, are driven by one ballast
- The residential version uses 26W, 32W, or 42W lamps
- Commercial downlight product: Lithonia CCR82, Lithonia CCR62
- Residential downlight product: Lithonia CKP62
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DEMONSTRATION LOCATION:
CSU San Marcos
Center for Children & Families
Performance results/energy savings:
15% savings compared to typical fluorescent
~4,400 kWh per year
Date of Install: Fall 2007
Timeframe of testing/evaluation: Winter 2007
Partners:
California State University, Lithonia Lighting, University of California
Sponsors: California Energy Commission |
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DEMONSTRATION LOCATION:
University of California, Davis
Meyer Hall, small lobbies and hallways throughout the building
Performance results/energy savings:
75% compared to mercury vapor (HID)
~40,000 kWh per year
Date of Install: Fall 2005
Timeframe of testing/evaluation: Winter 2005
Partners:
California State University, Lithonia Lighting, University of California
Sponsors: California Energy Commission |
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RESULTS:
- Most cost-effective for new construction or incandescent and HID retrofits
- Dramatically reduced fixture wattage when compared to incandescent, HID systems, and older fluorescents
- Lower maintenance costs due to a single, lightweight, electronic ballast
- May be used in many commercial and residential applications, such as hallways, lobbies, and kitchens
STATUS:
The University of California, California State University, and Investor-Owned Utility (IOU) Partnership Program has indentified incentives for this technology that range from $25 to $80 per fixture.
These downlight fixtures are currently available through Lithonia Lighting at a retail cost of approximately $120 per system, depending on trim material. One system includes two cans and one ballast. The models for the commercial versions are CCR82 and CCR62, and the model for the residential version is CKP62.
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