LED Status Pakistan
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Transcript of LED Status Pakistan
LED Status_2013Syed Akhtar Ali
Visiting Professor Energy Management IoBM
Karachi,PakistanEnergy Consultant
What is an LED?
Light Emitting Diode
Colour
White
Anatomy of an LED
LED Basic Components
LED chips are made of silicone (like computer chips) then mounted in a “package” that has some electrical leads and sometimes a heat sink
Currently Most LED’s Are Directional
But not so good for applications better suited to omni directional lamps
LED Light Distribution
Some LEDs have diffusion lenses to spread out the light, or don't have the reflective cap.
Color Rendering...Color Rendering Index ( CRI )
How Natural And NormalDo People And
Things Appear UnderArtificial Light?
CRI Scale goes from: 0 - 100,with 100 being the best CRI
Color Rendering Index ( CRI )
STD. METAL HALIDE ( 65-70 )DELUXE LUCALOX ( 65 )
100
90
80
70
60
50
40
30
20
10
0 LPS ( 0 )
CLEAR MERCURY ( 15 )
LUCALOX, HPS ( 22 )
COATED MERCURY ( 50 )
FLUORESCENT ( 60+ to 92 )CMH (85+)
INCANDESCENT / HALOGEN (100)
DAYLIGHT MH ( 90 )
PO
OR
ER
B
ET
TE
R
The Perfect Light Source...“The SUN”
PerfectColor
Rendering
Watts
_______
Efficiency: Lumens, Watts, & Efficacy
Lumens: total “light” Watts: total power Efficacy: how much light for the power
(lumens per watt, LPW)(similar to miles per gallon)
Common Colour Temperatures
Approx Temp. Light Source
8500K Blue Sky6500K Daylight Fluorescent Lamp6000K Clear Mercury Lamp4500K Clear Metal Halide Lamp4000K Cool White Fluorescent Lamp3000K Halogen Lamp, WW Fluorescent2500K 40 Watt Incandescent Lamp2000K Candle, HP Sodium Lamp
Common Colour Temperatures
Myth #1LED’s Create No Heat
Lighting Trend
LED ATTRIBUTES
Led Attributes
Eis of Lamps
LED Prices
LED MARKET PENETRATION IN THE U.S.
LED Applications
Most Efficacious LED Products
Future Advances in LED Technology
A-type Lamps
Directional Lamps_definition
Indoor Luminaire_Definition
Lamps vs Luminaire
• LAMPS:60% Installations and 20% Energy Consumption
• Luminaire:37% installation and 80% consumption
Indoor Luminaire Potential
Troeffer
LED Troffers