Electric Electric LightingLighting
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Thomas EdisonThomas Edison
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Types of Lighting SystemsTypes of Lighting Systems
• Incandescent lamps
• Tungsten Halogen Lamps
• Fluorescent lamps
• High pressure sodium lamps
• Low pressure sodium lamps
• Mercury vapour
• Metal halide
HID lamps
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Incandescent Lamps
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Tungsten - Halogen Lamps
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High Pressure Sodium (HPS) Lamps
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Fluorescent Lamps Slide 7
Metal Halide Lamps
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Mercury Vapor Lamps
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Types of Lighting SystemsTypes of Lighting Systems
Comparing lamps
Type of Lamp
Lum / WattColor
Rendering Index
Typical ApplicationLife
(Hours)Range
Avg.
Incandescent 8-18 14 Excellent Homes, restaurants, general lighting, emergency lighting
1000
Fluorescent Lamps 46-60 50 Good w.r.t. coating
Offices, shops, hospitals, homes
5000
Compact fluorescent lamps (CFL)
40-70 60 Very good Hotels, shops, homes, offices
8000-10000
High pressure mercury (HPMV)
44-57 50 Fair General lighting in factories, garages, car parking, flood lighting
5000
Halogen lamps 18-24 20 Excellent Display, flood lighting, stadium exhibition grounds, construction areas
2000-4000
High pressure sodium (HPSV) SON
67-121
90 Fair General lighting in factories, ware houses, street lighting
6000-12000
Low pressure sodium (LPSV) SOX
101-175
150 Poor Roadways, tunnels, canals, street lighting
6000-12000
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Worksheet 1
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'Luminous Flux'
Part 2
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Worksheet
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Part 3 Lighting distribution
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Designing Sheet
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Conclusion Questions
worksheet 316
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Thank you Thank you for your for your attentionattention
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