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Energy Efficiency

Energy Efficiency. Lighting Akrem Awad. Three Most Important Areas in Energy Efficient Lighting. Visual Task. Visual Task. WATTS. LUMENS. F O O T C A N D L E S. Meet target light levels. Efficiently produce and deliver light. Automatically control lighting operation.

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Energy Efficiency

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  1. Energy Efficiency Lighting Akrem Awad

  2. Three Most Important Areas in Energy Efficient Lighting Visual Task Visual Task WATTS LUMENS F O O T C A N D L E S Meet target light levels Efficiently produce and deliver light Automatically control lighting operation Most Important Slide in Today’s Seminar!

  3. Energy Efficiency • Introduction • Types of lighting systems • Energy efficiency and other considerations 3

  4. Background • Lighting energy consumption 20-45% in commercial buildings • Significant energy savings can be realized with a minimal capital investment and common sense • For example, replacing high pressure sodium Fixtures with LED Fixtures (JESSUP)

  5. Quality of Illumination Quality of illumination may affect worker productivity: • Glare. Too bright. • Uniformity of illumination. • Color rendition. Ability to see colors properly. • Scale 0 to 100 (100 is best) • Color Temperature. Warm to Cool. • Measured in degrees Kelvin (K). 3000 is warm (yellowish); 5000 is cool or “daylight”.

  6. Energy Efficiency • Introduction • Types of lighting systems • Energy efficiency and other considerations

  7. High Intensity Discharge (HID) lamps Types of Lighting Systems • High pressure sodium lamps • Low pressure sodium lamps • Mercury vapor • Metal halide • LED lamps (light-Emitting Diode) • Incandescent lamps • Tungsten Halogen Lamps • Fluorescent lamps

  8. Ballasts • Old type ballasts were electromagnetic. • New ballasts are electronic Lighter, less noisy, no lamp flicker, dimming capability. Maximize your energy savings by selecting electronic ballasts with Low ballast factor that provides target illuminance.

  9. Types of Lighting Controls • Occupancy Sensors • Photo Sensors • Lighting Control Systems

  10. LED Lamps • Newest type of energy efficient lamp • Two types: • red-blue-green array • phosphor-coated blue lamp • Emit visible light in a very narrow spectrum and can produce “white light” • Used in variety of applications over vast spectrum of spaces • Technology is rapidly progressing • Significant energy savings: 82 – 93% • Longest lamp life: 40,000 – 100,000 hrs

  11. LED vs. Fluorescent Lamp

  12. Energy Efficiency • Introduction • Types of lighting systems • Energy efficiency and other considerations

  13. Jessup Warehouse LED retrofit

  14. Jessup Warehouse LED retrofit Simple payback is the number of years it will take for the savings to pay for the initial cost. [ Initial Cost / Annual Savings ] ROI "return on investment“ is the rate of return (percentage) on an investment over a period (years). [ 1 / Simple Payback ]

  15. Schaefer Tower Garage LED retrofit

  16. Schaefer Tower Garage LED retrofit Simple payback is the number of years it will take for the savings to pay for the initial cost. [ Initial Cost / Annual Savings ] ROI "return on investment“ is the rate of return (percentage) on an investment over a period (years). [ 1 / Simple Payback ]

  17. Governor office at Schaefer Tower LED retrofit

  18. Governor office at Schaefer Tower LED retrofit Simple payback is the number of years it will take for the savings to pay for the initial cost. [ Initial Cost / Annual Savings ] ROI "return on investment“ is the rate of return (percentage) on an investment over a period (years). [ 1 / Simple Payback ]

  19. Other Benefits • Improved Color Rendition/Visibility in Space • Longer Lamp Life • Less Maintenance (Normally a result of longer lamp life) • Adjust to target light levels • Improved Controls • HVAC Savings – Typically (1% to 2%) above lighting savings for cooled spaces • Incentive from Utility Rebates

  20. Hazardous Waste Disposal • Under current federal law, mercury-containing lamps (fluorescent, HID) may be hazardous waste. • Lamps containing mercury that fail the Toxic Characteristic Leaching Procedure (TCLP) test must be recycled! • EPA encourages responsible disposal practices to limit the release of mercury into the environment. TYPICAL MERCURY CONTENT OF VARIOUS LAMPS 250 watt Metal Halide lamp38 mg 250 watt High Pressure Sodium lamp 15 mg Typical T8 Fluorescent Tube4-5 mg Typical Compact Fluorescent (CFL)4-5 mg

  21. Fluorescent Lamp/Ballast Change-out vs. New Fixture “Rules of Thumb” • Install new fixtures when: • Existing fixtures are over 20 years old • Lamp holders are worn out • Multiple components are failing • Design requires change in fixture type • Retrofit existing fixtures with lamps & ballasts when: • Existing fixtures are less than 20 years old • Lamp holders and other components are still good • Budget is very tight • Expensive/Difficult/Environmental Conditions Present (i.e. asbestos or excessive piping and ducts in ceiling, etc.)

  22. Energy Efficiency: Lighting THANK YOU FOR YOUR ATTENTION

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