e3t e fficiency emerging echnologies easily commissioned ... · easily commissioned lighting...
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E3TE3T EnergyEfficiencyEmerging Technologies
Easily Commissioned LightingControls
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E3T Emerging Technologies Showcase
Leora RadetskyLighting Research Center
Levin NockAerotek Contractor for BPA Energy Efficiency
October 22, 2015
Sponsored by BPA’s E3T Program
E3TE3T EnergyEfficiencyEmerging Technologies
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E3TE3T EnergyEfficiencyEmerging Technologies
Advanced Lighting Controls
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Goal:The right amount
of light,when & where
it’s needed.
Lighting Research Center
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Market Penetration < 3%
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NVLAP-accreditedtesting laboratory
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30,000 sq. ft. nearRensselaer campus
Research & education revenue = $6M/year
40-60 concurrent projects in field& lab
Advancing the effective use of light,thereby creating a positive legacyfor society and the environment.
34 full-time faculty & staff,15 graduate students
http://www.lrc.rpi.edu/
E3TE3T EnergyEfficiencyEmerging Technologies
Sponsors
Report available soon at the bottom of this webpage:
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http://www.bpa.gov/EE/Sectors/Commercial/Pages/Commercial-Industrial-Lighting.aspx
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Pilot study to evaluate interior lighting controlswith “plug and play” or “automatic configuration”setup options.
1. Ease of installation, commissioning and use2. Default control characteristics3. Power demand differences between zone and
luminaire-integrated controls4. Power demand differences when different
luminaires were used with the same control system.
Purpose
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3 control systems paired with 2 LED troffer layouts1 integral LED troffer layout
E3TE3T EnergyEfficiencyEmerging Technologies
Overall Findings
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• Advanced control systems tested were easy to install,but ease of initialization and commissioning varied.
• Daylight conditions during Cx matter
• Lighting control systems should allow occupants tooverride the automated light levels by default
• Manual-on saves energy vs. auto-on
• Control algorithms and driver response determinepower demand and light levels
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Conference Space & Open Office
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Conference space withLithonia LED luminaires
Open office space withCree LED luminaires
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Small qualitative pilot study.Daylight access & occupancy details changed
between products, only 1 week data.
Disclaimer: NOT Apples to Apples
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wikipedia
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E3TE3T EnergyEfficiencyEmerging Technologies
The Control Systems
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LutronEnergiTriPak
CreeSmartCast
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PhilipsSpaceWise
The Control Systems
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WattstopperDLM
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LED Luminaire and Control SystemCombinations Used in Pilot Study
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Combo LED Luminaires Control System Default Control Mode
1 Cree CR24 40L-35K-10V CREE SmartCast manual-on/automatic-off
2 Cree CR24 40L-35K-10V Wattstopper DLM manual-on/automatic-off
3 Cree CR24 40L-35K-10VLutron Energi
TriPakautomatic-on/automatic-off
4 Lithonia 2ALL4 49L D50 LP835 NX CREE SmartCast manual-on/automatic-off
5 Lithonia 2ALL4 49L D50 LP835 NX Wattstopper DLM manual-on/automatic-off
6 Lithonia 2ALL4 49L D50 LP835 NXLutron Energi
TriPakautomatic-on/automatic-off
7Philips 2DLG49L835-4-D-UNV-DIM-
SWZG2Integrated into
luminaire
Selectable during set-up(manual-on/automatic-off orautomatic-on/automatic-off)
E3TE3T EnergyEfficiencyEmerging Technologies
How Easy Were These Controls to Set Up?
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Cree SmartCast LutronEnergi TriPak Philips SpaceWise Wattstopper DLM
Install Easy Easy Easy Easy w/ RJ45 cableselection
Cx instructions Little then(more now) Yes None then
(more now) Yes
Cx processEasy.
Use remote, thencreate groups
Easy.Pair sensors first,
then calibratedaylight sensor
Not intuitive.Remote to set upgroups and switch
Easy.Use remote to
calibrate daylightsensor
Increase light levelwith daylight
present?No Yes Yes No (can change in
advanced settings)
End UserOperation
(control mode:manual-on)Aggressivedimming
(control mode:auto-on)
Cree fixtureswhistled; Lithonia
did not
(can select controlmode)
Once setup,worked well
(control mode:manual-on)
Could not switchon lights with
daylight present
E3TE3T EnergyEfficiencyEmerging Technologies
Daylight Conditions During Cx Matter
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• Systems werecommissioned underdifferent daylightconditions
• Assumed sensor-taskratio may result in asystem that dims toomuch or switches off too often
250 lx
300 lx
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Wish-list: Semi-automatic Mode(manual-on day, auto-on night)
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• Manual-on mode is great during the day,when daylight is present.
• For manual-on at night, you may need aflashlight to find the wall switch if sensors’don’t detect motion. Waving your armsdoesn’t work.
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Light Level Analyses
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Occupants accepted low light levels, provided that they couldincrease light levels when desired
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Measured Power Demand in Office
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Baseline usingdigital timer[Avg. Power: 87 W]
SmartCast(manual-on)[Avg. Power: 5 W]
Lutron EnergiTriPak(auto-on)[Avg. Power: 11 W]
WattstopperDLM(manual-on)[Avg. Power: 12 W]
Controlspaired withCree LEDluminaire
Notconcurrent
periods
Differentdaylight and
occupancyduring each
period
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Measured Power Demand in Office
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PhilipsSpaceWiseBaseline[Avg. Power: 68 W]
SpaceWise(auto-on)[Avg. Power: 52 W]
SpaceWise(manual-on)[Avg. Power: 22 W]
Notconcurrent
periods
Differentdaylight and
occupancyduring each
period
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Lighting Energy Use in Open Office
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Lighting Energy Use in Conference Area
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Summary
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• Easy to install• Ease of initialization and commissioning varied• Daylight conditions during Cx matter• Occupants satisfied working under lower light levels if they could
increase light levels when they wanted• Lighting control systems should allow occupants to override the
automated light levels by default• Manual-on saves energy vs. auto-on• Control algorithms and driver response determine power demand
and light levels– Energy savings depend as much on the control algorithm as on
integrated vs. zone– Different luminaires with the same control system may give different
light levels and power demand
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Easily Commissioned Lighting ControlsReports
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http://www.bpa.gov/EE/Sectors/Commercial/Pages/Commercial-Industrial-Lighting.aspx
Scroll down to• Energy Efficiency Lighting Research
• Advanced Lighting Controls• Easy Controls Product Review
is the Phase 1 report• Coming soon –
Easily Commissioned LightingControls (Phase 2 Report)
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Questions?
Leora RadetskyResearch ScientistLighting Research CenterRensselaer Polytechnic Instituteradetl2 (AT) rpi.edu
Levin NockResearch Project ManagerAerotek Contractor for BPA Energy EfficiencyLFNock (AT) bpa.gov
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Upcoming Showcase Webinars
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December 2, 2015 – Low-e Storm Windows
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More information about emerging technologies:E3T database: www.e3tnw.orgE3T Program: www.bpa.gov/energy/n/emerging_technology/Conduit: www.ConduitNW.org
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