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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 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 Understanding the Utility Company Roles Designing System Changes Management of Street Lights Available Resources
Street Lighting Public Safety/Security Perceptions Increase Commerce Lighting Effects-asthetics/architectural Public Demand
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
Terms And Definitions Lumens Lumen Maintenance Color Rendition Index Correlated Color Temperature Efficacy Cut-off IESNA - Illuminating Engineering Society of North America
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
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
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
Correlated Color Temperature-CCT • Measured in Degrees Kelvin • Warm to Cool • 2800⁰ to 5000⁰
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
Light Pollution Night Sky Concerns Light Trespass Full Cut-off, Cut-off, Semi Cut-off
Emerging Technologies Induction--- > LED --------------------------------------- > Plasma--------- >
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
LED Temperature and forward current critical to life expectancy Focus advantage Glare Cost Efficacy, CRI and CCT Fixture Design
Life Cycle Costs • Energy • Capital Investment • Maintenance • First Cost • Frequency of service requirements • Cost of service call • Lumen depreciation • Obsolescence
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
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
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
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
Goals • Purpose • Affect • Safety • Other • New or existing • Technologies • Pole spacing/height • Economics
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
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
George A. Woodbury gwoodbury@republicits.com Director of Energy Services Republic ITS Cell 603-320-0466 Fax 978-262-9020
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