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Energy Efficient Streetlights and Outdoor Lighting Workshop

Energy Efficient Streetlights and Outdoor Lighting Workshop. Presented by George A. Woodbury On Behalf of Turtle Creek Valley Council of Governments & Pennsylvania League of Cities and Municipalities. Goal - To Create an Understanding of:. Effective Street Lighting

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Energy Efficient Streetlights and Outdoor Lighting Workshop

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  1. Energy Efficient Streetlights and Outdoor Lighting Workshop Presented by George A. Woodbury On Behalf of Turtle Creek Valley Council of Governments & Pennsylvania League of Cities and Municipalities

  2. Goal - To Create an Understanding of: Effective Street Lighting Understanding the Utility Company Roles Designing System Changes Management of Street Lights Available Resources

  3. Street Lighting Public Safety/Security Perceptions Increase Commerce Lighting Effects-asthetics/architectural Public Demand

  4. Available Technologies Incandescent Mercury Vapor High Pressure Sodium Metal Halide Pulse Start Ceramic Metal Halide Induction/Fluorescent Light Emitting Diode-LED Induction/Plasma Metal Halide-Luxim

  5. Terms And Definitions Lumens Lumen Maintenance Color Rendition Index Correlated Color Temperature Efficacy Cut-off IESNA - Illuminating Engineering Society of North America

  6. Lumens Measure of the total light output of a light source Measured in a sphere Unit of measure-Candela Measure of light level on a surface-footcandle or Lux = candela/meter squared

  7. Lumen Maintenance

  8. Lumen Maintenance

  9. Color Rendition Index-CRI • Relative ability of a light source to match the color rendering of a standard reference source *Coated lamps provide higher CRI • CRI impacts on night vision

  10. Night Vision Basics • Rods and Cones • Rods-night vision-visual purple • Cones-daylight vision-three types • Scotopic-Mesopic-Photopic Vision • Pupil Lumens affect of light wavelength on pupil • Affect of color on visual effectiveness

  11. Scotopic to Photopic Vision

  12. Wavelength Sensitivity

  13. Photopic Sensitivity

  14. Correlated Color Temperature-CCT • Measured in Degrees Kelvin • Warm to Cool • 2800⁰ to 5000⁰

  15. Efficacy Measure of Lumens per watt of power Not a measure of system efficiency Useful lumens-system efficacy Glare Maximum possible RGB efficacy 400 lm/W or source efficacy of 200 lm/W

  16. CALiPER ROUND 7 SUMMARY System Efficacies-Streetlights

  17. Light Pollution Night Sky Concerns Light Trespass Full Cut-off, Cut-off, Semi Cut-off

  18. Emerging Technologies Induction--- > LED --------------------------------------- > Plasma--------- >

  19. Induction Electrode-less Fluorescent Proven technology since mid 1990’s Limited Wattages Output at low temperatures Cost Two primary manufacturers Patent infringement issues Fixture Design

  20. LED Temperature and forward current critical to life expectancy Focus advantage Glare Cost Efficacy, CRI and CCT Fixture Design

  21. Life Cycle Costs • Energy • Capital Investment • Maintenance • First Cost • Frequency of service requirements • Cost of service call • Lumen depreciation • Obsolescence

  22. Life Cycle ComparisonAnnual Costs-Assume 18 Year Cycle

  23. Utility Billing & Challenges • Based on mathematical algorithm • Lamp wattage • Dusk to dawn tables • Equally divided • Annual operating hrs-typically ≈4100-4200 • Maintenance and depreciation • Tariff filing • Non standard lights

  24. Designing and Upgrading Your System • Project goals • RP-8 guidelines Lamp type iso-foot candle distribution Pole height/spacing • Cost considerations • First cost • Life cycle costs • Energy costs-metered/ummetered

  25. Lighting Considerations • Street Lighting • Primarily pedestrian and auto safety • Linear distribution • Outdoor Lighting • Parking lots, parks, pedestrian ways, downtown areas • Both pedestrian safety and aesthetics • Enhance Commerce

  26. Distribution Patterns

  27. Modifying Existing Systems • Map system-capture attributes • IESNA guidelines • Standardize lighting levels • Adjacent land use • Route classification • Any special considerations • Lamp type • Goals-New Construction

  28. IESNA Guidelines

  29. Goals • Purpose • Affect • Safety • Other • New or existing • Technologies • Pole spacing/height • Economics

  30. Tracking Systems • Wireless • Streetsmarts-GE Los Angeles • Roam Acuity-Halophane-Glendale AZ • Streetlight Intelligence Lumen IQ-Calgary Canada • Line • Echelon Corporation-San Jose • Capabilities • Monitoring • Dimming • Relay

  31. Ownership Options • Existing systems-Utility dependent • Available customer owned tariff? • Purchase price? • Economics? • License Agreement • Compliance with applicable safety codes-make ready work • New Construction-Set municipal guidelines • Solar

  32. George A. Woodbury gwoodbury@republicits.com Director of Energy Services Republic ITS Cell 603-320-0466 Fax 978-262-9020

  33. Pennsylvania Utility Companies • Allegheny Power (West Penn Power) • Citizens Electric of Lewisburg • Duquesne Light Company (DQE) • Pennsylvania Power Company (PennPower) - FirstEnergy Company • Metropolitan Edison Company (Met-Ed) - FirstEnergy Company • Pennsylvania Electric Company (Penelec) - FirstEnergy Company • First Energy formally GPU Energy • PPL Electric Utilities • PECO Energy Company- Exelon Company • Pike County Light & Power Company • UGI Utilities Inc. • Wellsboro Electric Company

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