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Advancements in Hi-Bay Lighting: Fluorescent vs. HID Technologies for Big Box Retail

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Explore the latest developments in Hi-Bay lighting solutions tailored for warehouses and big box retail settings. This comprehensive guide examines the efficiency, color rendering, and economic advantages of fluorescent lighting systems, such as T5 and T8 lamps, compared to traditional metal halide (HID) systems. Discover how improved technology enhances lumen maintenance and reduces energy consumption, while offering versatile control options and safety benefits. Understand the implications of different lighting technologies in creating optimal retail environments.

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Advancements in Hi-Bay Lighting: Fluorescent vs. HID Technologies for Big Box Retail

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  1. Warehouse and Industrial “Big Box” Retail There is an new direction in Hi-Bay Lighting. . . 1970 1980 1990 2000

  2. Why Fluorescent? • Excellent lumen maintenance (LLD) • Fluorescents lose 5-6% of lumen output at 40% of rated life • Metal halide typically loses about 35% • As the lamps age, the difference becomes even more pronounced

  3. Why Fluorescent? • Improved color rendering • T5 CRI is 82 • T8 CRI is 75 or 82 • MH CRI is 70 (coated) or 65 (clear), reducing visual acuity • Wider choice of lamp color • 3000°K • 3500°K • 4100°K • 5000°K • Negligible color shift • Unlike metal halide, fluorescent lamps maintain consistent color throughout their life

  4. Why Fluorescent? • Instant restrike • Fluorescent lamps are back on instantly • HID sources can take several minutes • Safety/security risk • Lost sales • Versatile control options • Generators • Battery packs • Photocells • Dimming • Sensor friendly • New Developments in T5 Technology • 3-Lamp and 4-Lamp 54W ballast available now • 480V & 347V 1-Lamp and 2-Lamp ballast available now

  5. Why HID? • Ambient temperature tolerance • Consistent light output above 120°F (50°C) and below 50°F (10°C) • Lower Installed Cost • Customers who don't care about maintained costs • Massive lumen packages • Extremely high mounting heights suggest 1000W MH • Severe environments requiring specialized fixtures • Corrosive or exceptionally dirty • Subject to vibration or violent impact • Hazardous locations

  6. LHB • Linear Hi-Bay with Brio™ optics • Up to 93% efficient • Three louver options • Miro4™ High-Efficiency • LS Specular Anodized • MA Matte Anodized • 4’ replaces 175-250W MH • 8’ replaces 250-400W MH • T5HO • 2-lamp cross section

  7. LHE • Economical T5 Hi-Bay • Up to 98.6% Efficient • Two body widths • 10” LHEM for 2 or 4 T5 lamps, 2 T8 lamps • 15” LHEW for 4 or 6 T5 or T8 lamps • Two lengths • 4’ • 8’ (narrow body with tandem lamps—8 lamps total) • Multiple shielding options • Cross baffle • Wire guard • Cage guard • Lens

  8. LHR Wide Body • Linear Hi-Bay with Chambered Reflector • Up to 99% efficient! • Three reflector finishes • Miro4™ High-Efficiency • LS Specular Anodized • Gloss White • Replaces 175-400W MH • 4-lamp or 6-lamp T5HO or 6-lamp T8 • Optional 6% or 12% uplight

  9. LHG Recessed • LHR adapted to grid ceilings • 2x4 6-lamp T5 or T8 • Three reflector finishes • Miro4™ High-Efficiency • LS Specular Anodized • Gloss White • Optional shielding • Door & lens • 11GA wireguard

  10. BALLAST FIXTURE LAMP ENVIRONMENT Smoke and Mirrors • Task • Size & shape of the space • Obstructions • Reflectances • Ambient temperature • Quality, degree & location of delivered illumination

  11. Smoke and Mirrors Why is fluorescent suddenly a viable option? • MIRO 4™ 95% reflective aluminum • The miraculous T5 HO lamp

  12. Smoke and Mirrors • MIRO 4 Aluminum is 95% reflective • LS Specular Anodized is 86% reflective • …but much less expensive

  13. Smoke and Mirrors • MIRO 4 Aluminum is 95% reflective • LS Specular Anodized is 86% reflective • …but much less expensive

  14. Smoke and Mirrors • MIRO 4 Aluminum is 95% reflective • LS Specular Anodized is 86% reflective • …but much less expensive • GW PAF Gloss White Enamel is 94% reflective

  15. Distribution Patterns Narrow distribution (specular: MIRO4 or LS) Widespread Distribution (gloss white)

  16. Smoke and Mirrors And how about those T5 HO lamps…

  17. Smoke and Mirrors Energy Consumption 22% Lower Watts 48% Lower Watts 52% Lower Watts

  18. Smoke and Mirrors Delivered, maintained lumens per watt (light/$)

  19. LHR Narrow Body • Up to 89% efficient • Three reflector finishes • Miro4™ High-Efficiency • LS Specular Anodized • Gloss White • Replaces 175-400W MH • 4-foot or 8-foot • 2-lamp or 3-lamp T5HO or T8 • Optional uplight

  20. Case Study Blockbuster VideoLHR4-332

  21. Blockbuster Video • Original installation: 150W CHB MH Pulse Start Hi-Bay • Small store: 48 fixtures • High-performance ballast & lamp • 12’ mounting height • LHB T5 HO Conversion • Higher initial cost • Lower operating cost • Improved: • light levels • lumen depreciation • color rendering • aesthetics • LHR T8 Conversion • Lower initial cost • Lower operating cost • Slightly reduced light levels

  22. Blockbuster Video Lamps 150W MH (2) 54W (3) 28W Pulse Start T5HO T8 • Lamp Life (Hours) 15,000 20,000 26,000 • CRI 75 82 82 • Initial Lumens 11600 8900 8175 • Lumen Maintenance .78 .93 .94 • Design Lumens 9048 8280 7680

  23. Blockbuster Video Fixture & Ballast 150W MHColumbia Columbia Hi-Bay LHB4-254 LHR4-332 • Design Lumens 9048 8280 7680 • Ballast Factor 1.00 1.00 1.18 • BF Adjusted Lumens 9048 8280 9062 • Fixture Efficiency 69.5% 90.2% 89.0% • Delivered Lumens 6288 7469 8066 • System Watts 190 120 99 • Lumens per Watt 33.1 62.2 81.5

  24. Blockbuster Video Footcandles& Energy 150W MHColumbia Columbia Hi-Bay LHB4-254 LHR4-332 • Calculated Fc 72 72 62 • Measured Fc 57 69 62 • Max:Min 6.0 3.9 3.6 • Fixture Watts 190 120 99 • Watts per Store 9120 5760 4752 • Annual Energy Cost* $4793 $3027 $2497 * 16 hours per day, 365 days per year, 9¢/kwh.

  25. Blockbuster Video Payback Columbia Columbia LHB4-254 LHR4-332 • Fixture upcharge $36.00 $4.35 • Energy savings / fixture / year $36.79 $47.83 • Payback 1 year 33 days

  26. Payback Analysis & Lighting Layout Tools • Conduct payback analyses with Payback Machine—Columbia’s automated Microsoft Excel application • Payback Machine.xls • Download free at www.columbialighting.com/LH • Calculate footcandle levels with Hubbell’s powerful and easy-to-use lighting design software, LitePro 2.0 • IES-format photometric files are available for LHR, LHB and LHE at www.columbialighting.com

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