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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