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Energy Management Opportunities with Energy Efficient Lighting.

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Presentation on theme: "Energy Management Opportunities with Energy Efficient Lighting."— Presentation transcript:

1 Energy Management Opportunities with Energy Efficient Lighting

2 2 Your panelists –Benefits, Technologies & Services: Mike Carter and Mark Farrell, Energy Engineers

3 3 (4.89) 30.4% Lighting webinar benefits –Bottom line cost savings today! –Comfortable speaking with customers –Knowledge of terms and pros/cons –Awareness of energy efficiency opportunities Large Office Building

4 4 –Energy Basics –Fundamentals of Light –Lighting Technologies –Lighting Controls –Lighting Maintenance –Business Solutions Toolkit –Incentives/Rebates Contents

5 5 –Power versus Energy Kilowatt (kW) is a measure of power, like the speedometer of your car that records the rate at which miles are traveled. A bigger engine is required to travel at a faster rate. Kilowatt-hour (kWh) is a measure of energy consumption, like the odometer on your car (miles). Energy cost = power (kW) x time (hrs) x price = kWh x $/kWh A 113-watt four lamp light fixture costs about $66 annually when operating 16 hr/day (113 W x 5,840 hr x $0.10/kWh ÷ 1,000 W/kW). Energy basics Source: stock.xchng Source: Commonwealth of Kentucky

6 6 Energy basics –Lights do not consume more energy when they are first turned on. Includes high-intensity discharge (HID) lighting. –Pay the price for improved energy efficiency! The operating cost over the lifetime of a light fixture can far exceed the original purchase price.

7 7 Fundamentals of light –LumensA measure of the perceived power of light. Constant output regardless of distance from source. –Foot-candleOne lumen of light distributed over a square foot area. Depends on the distance from the light source. Does not hold for focused fixtures like flood lamps. Can be measured using light meter.

8 8 Lighting comparison –Lighting has many metrics. 60-watt incandescent ~ 850 lumens (100 CRI) ~ 14 lpw efficacy 32-watt T8 fluorescent ~ 2,800 lumens (83 CRI) ~ 88 lpw 400-watt metal halide ~ 24,000 lumens (65 CRI) ~ 60 lpw 400-watt high-pressure sodium ~ 45,000 lumens (22 CRI) ~ 112 lpw

9 9 Incandescent / halogen –90% heat and 10% light (10 to 17 lumens per watt) –Energy Independence and Security Act (EISA) of 2007 establishes higher minimum efficiency standards for incandescent reflector lamps (R lamps). –Parabolic Aluminized Reflector (PAR#) lamps BR# (Bulged) and ER# (Ellipsoidal) # the diameter of the widest part of the lamp in eighths of an inch (R20 = 20/8 = 2.5" diameter) EISA applies to > 2.25 " diameter

10 10 Incandescent / halogen –Flood lights Beam angle encompasses that part of the beam that varies from peak | brightness down to 50% of that intensity as measured in a plane through the nominal beam centerline. –New halogen bulbs offer up to 30% energy savings, instant on, no mercury, 100 CRI, and compliance with EISA Philips Halogena® Energy Saver/Energy Advantage (3,000 hrs) Sylvania Halogen SuperSaver® (1,000 hrs) GE Edison (2,500 hrs) Source: Philips Lighting

11 11 Fluorescent –Historical timeline 1838Michael Faradays glow tubes 1850sGlass-blower Heinrich Geissler 1880sAlexandre E. Becquerel coated tubes 1893Nikola Tesla induction tubes 1896Thomas Edison patented x-ray lamp 1890sDaniel McFarlane Moore 1901Peter Cooper Hewitt mercury vapor lamp 1927Edmund Germer patent 1936GEs George E. Inman patent 1938First commercial fluorescent tubes

12 12 Fluorescent –Nomenclature (FxxT#) Ffluorescent Fxxwattage (rapid start) or length (instant start) T- tubular; Ucurved/bent Circlinecircle T#diameter in eighths of an inch Ballast Factor (BF)ratio of output compared to reference ballast (not energy efficiency measure) Affects both watts and lumens Ranges from 0.6 to 1.3 –Fluorescent light emission is a chain reaction.

13 13 Fluorescent –T8 Types (Generations) TypeNameWattsLumensCRI Life (hrs, 000s) 1G 700 Series, Basic 32 W2, G800 Series32 W 2, , GSuper, HO32 W 2, , G Reduced Wattage, Energy Savers 23 W 25 W 28 W 30 W 2,000 2,400 2,750 2, Temp. sensitive, Instant start only

14 14 Fluorescent –Super T8 lamps, with high-efficiency ballasts, are high-lumen (>3000 versus 2,850 standard) and extended life (>24,000 versus 20,000 hours standard) products.Super T8 lamps Only saves energy when combined with a lower ballast factor ballast. –T5 series (good for indirect lighting like suspended lighting). Type Initial LumensWatts Ballast Factor Fixture Lumens Fixture Watts LPW T82, , Super T83, , TypeInitial Lumens WattsLPWLife T52,90028 W10424,000 hours T5HO5,00054 W9324,000 hours

15 15 –T8 versus T5T8 versus T5 T5s (smaller diameter and shorter) not interchangeable with T8s. Six F32T8s equivalent to four F54T5HO. T5s have lower mercury content than T8s. T5 lumen maintenance better at higher ambient temperatures but worse in cold. Holophane IntelliBay & IntelliVue Lithonia I-BEAM System Fluorescent Source: RPI Lighting Research Center

16 16 Fluorescent –Replace existing T12 fluorescent lamps with T8 fluorescent lamps (up to 30% savings). –Start modes Programmed start (in series) Long preheat shuts down after start (up to 50,000 cycles). Can be wired in parallel Rapid start (in series) Simultaneous preheat stays on all the time (15,000 to 20,000 cycles). Identified by 2-wires from ballast to each end of lamp. Instant start (in parallel) No-preheat; high-voltage start (10,000 to 15,000 cycles). Identified by 1-wire from ballast to each end of lamp. Not good with occupancy sensors (<30 minute burn). Four-lamp T12 versus T8 Fixtures Lamp Type Fixture Watts Fixture Lumens LPW F32T121489,12062 F32T811310,60094

17 17 Fluorescent –Fluorescent ballasts Magnetic (60 Hz) Core and coil Electronic (20 to 60 kHz) 10% to 15% more efficient NEMA Premium® Ballasts even better All ballasts consume power even without lamps (2-lamp example). Electronic consumes 6 to 12 watts loaded and 3 to 7 watts open circuit. Magnetic consumes 18 to 20 watts loaded and 6 to 10 watts open circuit. –Regulatory driver for electronic ballasts (T8 and T5 lamps)Regulatory driver No magnetic ballasts manufactured for replacement after June DOE Energy RegulationsBeginning July 14, 2012, these regulations effectively eliminate most 4-ft T12, 8-ft (F96) T12 lamps, and 700 series (1st generation) T8 lamps

18 18 Fluorescent –Metal Halide (MH) versus Fluorescent for High-bayMetal Halide (MH) versus Fluorescent Probe start (PS) MH with low lumen maintenance (<65%) is best target for replacement. EISA2007 imparts higher performance standards for PS MH. The lumen maintenance of metal halides can decrease to 45% during its lifetime, whereas fluorescents maintain 90% to 95% in optimal conditions. Comparison One PS MH with 20,000 EOL lumens at 320 system watts Six F32T8 with 18,000 EOL lumens at 220 system watts Rememberlumen output of fluorescents declines with heat/cold.

19 19 –Compact Fluorescent Lighting (CFL)Compact Fluorescent Lighting (CFL) You get the same or more light output (lumens) with a 75% energy reduction and over six times the rated life! Up to 9,000 lumen output at 120 watts (PL-H high 4-pin) Energy savings far outweigh difference in lamp price. Power factor is typically 0.6, but power savings far outweighs low power factor. Issue of mercury content can be addressed. Use reflector flood CFLs (R-CFLs) in recessed can lights. Consider aluminum reflector CFL PAR lamps. Globes Candelabra Fluorescent Source: NREL

20 20 Fluorescent –Compact Fluorescent Lighting (CFL) Twister Single, double (T), triple (TR), quadruple (Q) twin-tube (turns) Integral ballast screw-in Modular external ballast pin-based Gxx where xx is pin center-to-center dimension (G23 has 23mm dimension) »G23q where q means quad-pin base »G23d-x where d-x means the number of tubes (turns) 2-pin with integral starter requires magnetic preheat ballast 4-pin (quad) with external starter usually electronic ballast

21 21 Fluorescent –Induction (electrodeless) lighting High-frequency magnetron microwave power generator, magnetic field coupling device (antenna), and phosphor coated tube. Up to 100,000 hour rated lamp life Lumen maintenance 70% at 60,000 hours Efficacy of 70 to 75 lumens per watt Best applications have high labor cost. Parking garages Cold-storage rooms Inaccessible roadway tunnels and underpasses Illumination of roadway signs and inaccessible advertisement boards Lighting over stairs or escalator wells Open mall atriums or ceilings in "big box" retail areas Pole-mounted luminaires for dusk-to-dawn illumination on a campus Industry, petrochemical, and offshore applications Source: Osram Endura/Sylvania Icetron TM Electrodeless Lamp

22 22 High Intensity Discharge –Low Pressure Sodium Most energy efficient lighting source Not an arc source, so no glare 0 to 20 CRI –High Pressure Sodium Arc source with (20 to 65 CRI) 310 W and 360 W replacements exist for 400 W Electronic ballasts 5 to 20 W versus 50 to 70 W magnetic

23 23 High Intensity Discharge –Metal Halide Arc source with 60 to 95 CRI Quartz or ceramic transparent tubes Ceramic (polycrystalline aluminaPCA) offers better lumen maintenance, color rendering (95 versus 65 CRI), and color stability. Can operate on HPS ballasts (direct lamp replacement). –Smaller Size <150W HID Ballasts Generally 50% smaller in size (3" x 1.3" x 1.1") and lighter weight than standard magnetic ballasts Self-ballasted PAR30LN and PAR38 (1,200 initial lumens) CMH lamps replace 74W and 120W halogen bulbs Source: Osram-Sylvania

24 24 High Intensity Discharge –Sustained arc vs. fluorescent phosphor emission –Strike time (minutes) TypeWattsLumens Lumen MaintenanceLPWCRI Life (hrs) Mercury Vapor*1,000 W47,50065%304024,000 Low Pressure Sodium 135 W22,000>95% ,000 High Pressure Sodium 400 W45,00075%853024,000+ Metal Halide**452 W40,00070%65 20,000 MVLPSHPSMH ProbeMH Pulse Warm up Restrike *Ballasts banned by EPAct2005 **Position dependent

25 25 –Radio Frequency Lighting Luxim LiFi or Light Emitting Plasma (LEP) An ac/dc converter generates an RF signal that is transmitted by a special cable to a quartz lamp embedded in a dielectric material. Pemco Lighting Products STA luminaire »273 system watts »23,000 initial lumens »5,500K CCT/80 CRI »50,000 hour rated life »Dimmable to 20% High Intensity Discharge Source: Luxim

26 26 Solid state lighting –Light Emitting Diodes (LEDs)Light Emitting Diodes (LEDs) Electrical current driver circuit instead of ballast. Relatively low lumens per watt (30 to 35 lpw) historically, but now 45 to 60 lpw. Long life; years, not hours. 70% lumen maintenance at 50,000 hours of operation. Frequent switching does not affect rated life for LEDs as it does for fluorescents. Directional nature of LED results in very high luminaire efficacy. Very compact and low-profile. Nothing to break. No abrupt failure mode. Source: NIST

27 27 Solid state lighting –Light Emitting Diodes (LEDs) Instant on (no warm-up time required). Does generate harmonics, but no reported problems. Some built-in surge and noise protection. Expensive initial cost. Heat sensitive. Exit Signs Annual operating costs of $5 compared to $30 to $40 for incandescent or fluorescent. Compatible with battery backup (traffic lights). Source: stock.xchng

28 28 Lighting controls –DaylightingDaylighting Skylights/lightpipes, clerestory windows, or roof monitors. Energy savings can range from about $0.25/ft 2 to $0.50/ft 2, depending on the building type, location, office area plan, and local cost of energy. Photosensor layout is important. Photosensor layout Occupancy sensors Ultrasonic has wider range than infrared but is prone to false positives. Can shorten life of fluorescents with instant start ballast. $30 to $150 cost. 2-year payback is normal. Source: LightLouver LLC

29 29 Lighting controls –DimmingDimming A solid-state dimmer works by using silicon-controlled rectifiers (SCRs). Radio frequency interference (RFI) can be a problem. Greatly increases bulb life for incandescent/halogens. Requires special dimming ballast for fluorescents. 3-wire, 2-wire, or 4-wire. Energy savings fairly linear with fluorescents. Continuous or bi-level dimming HID lighting limited to 50% to 60% dimming. Two-level for magnetic ballasts (non-linear energy savings). Continuous for electronic ballasts (energy savings linear). Lamp life degrades if dimming to less than 60% level.

30 30 Lighting controls –Digital Addressable Lighting Interface (DALI) A royalty-free, non-proprietary, two-way, open and interoperable digital protocol. The Gateway broadcasts commands to all digital ballasts across the signal cabling that connects the ballasts in parallel. A ballast only responds when the message contains its specific address. Sixteen programmable scenarios and groups stored in the ballast.

31 31 Lighting controls –Wireless Mesh Networks Redundant Joining Healing Spatial diversity Different routes Temporal diversity Try again later Source: Dust Networks

32 32 Lighting maintenance –Nine components of a good lighting maintenance program*: Group relamping Know your equipment Focusing and adjustment Verify lamp types and wattage Verify color temperature Confirm that everything is in working order Watch for compatibility issues Get rid of dirt Do not forget exterior lighting *"Everything You Need to Know About Maintaining Your Lighting System," by Jean Sundin, founder of Office for Visual Interaction, Inc.Everything You Need to Know About Maintaining Your Lighting System

33 33 Lighting maintenance –Group relamping recommended at 60% to 80% of rated life. Every 2 to 3 years for 20,000 hour fluorescents. Can be 30% to 40% cheaper to group relamp due to labor savings. Easier to schedule and outsource than spot relamping. Reduces improper mixing of different types of lamps. Normally done outside working hours. –Lighting failure modes Heat Voltage transients Vibration Bad electrical connection Improper cycling

34 34 The Business Solutions Toolkit –Reduce energy expenditures with free, online tools Energy benchmark data by business segment Efficiency recommendations by business segment Lighting, motor and other energy calculators Facility energy assessment… plus more –Get energy answers with live Web resources Ask an Expert service supplies direct answers to energy questions Searchable Energy Library and News resources Monthly electronic newsletter delivered to your box

35 35 How to access the Toolkit –Links found on the Pacific Power website Can access direct at –Register to use the Toolkit and you will receive our monthly newsletter

36 36 What is in the Toolkit

37 37 Online business tools

38 38 Pacific Power FinAnswer Express –FinAnswer Express is for commercial and industrial customers– either retrofit or new construction –Pre-calculated incentives for high-efficiency lighting and HVAC equipment Custom incentives may be available for other types of equipment –Incentive process (pre-purchase agreement or post purchase application) varies by technology and project type Please understand the process before you purchase! –Check our website for on-line forms plus trade allies available to help –Also check for state and federal tax incentives at

39 39 Pacific Power Energy FinAnswer –Applies to comprehensive commercial or industrial projects– either new construction or commercial retrofit* Lighting and non-lighting projects can be packaged –Starts with an energy analysis to identify options and highest priority measures Commissioning is required for most measures –Incentives are project-based Payable by one-time lump sum check, per project –Incentive agreement must be signed before equipment is purchased –Check our website for participation steps and online forms * Commercial retrofit projects must be at least 20,000 sq. ft. to be eligible

40 40 Contacts –For more information please phone us: Call your Business Solutions Team for answers to service and account questions at –Visit our website at: Business program Web page – Business Solutions Toolkit – –Or contact us directly: us at Use our online inquiry form – Call our business Energy Services Hotline at –Also visit the Energy Trust of Oregon website at © 2010 Tech Resources Inc.

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