Incandescent lighting
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The Incandescent Light Bulb Not such a bright idea anymore
Transcript of Incandescent lighting
The Incandescent Light BulbNot such a bright idea anymore
Invented by Humphry Davy
1802 in Great Britain
First practical lamp by Edison
1879 in America
Edison’s Bulb
Incandescent in Nature
Became popular early 1900’s
Human Factors Goals
Increase Safety
Enhance Performance
Increase User Satisfaction
Safety
Can cause burns
Can cause fires
Performance
90% Energy = Heat Output
Only 10% is converted to usable light
User Satisfaction
Much less efficient than alternatives
Usually appear yellowish
Why do we still buy these?
Set Effect.
Less efficiency+
Cheaper initial cost=
Popularity
Less efficiency+
Cheaper initial cost=
Logical Answer
Fluorescent Lighting Alternative
Fluorescent Bulb Alternative
100 Watt Incandescent 22 Watt Compact Fluorescent
Light vs. Heat 90% Light | 10% Heat 75% Light | 25% Heat
Lifetime 750 Hours 10,000 Hours
Per Year 11 Bulbs Less than 1
Per Unit Cost $0.75 $4.00
Electric Cost Per Year $13.19 $2.89
Annual Cost Per Bulb $1.46 $0.28
4 Hour/Day cost/year $14.65 $3.17
Environmental Cost 365 Lbs CO2 80.3 Lbs CO2
-100 watt output comparison-
Fluorescent Bulb Alternative
100 Watt Incandescent 22 Watt Compact Fluorescent
Lifetime 750 Hours 10,000 Hours
Per Year 11 Bulbs Less than 1
Electric Cost Per Year $13.19 $2.89
4 Hour/Day cost/year $14.65 $3.17
Energy Star Rated Bulbs
Consume 75% Less Energy
Last 10x Longer
Safer
Lesser Known Alternative
LED Lighting(Light-Emitting Diodes)
Lesser Known Alternative
Common Uses
FlashlightsDesk Lamps
Indicator Lights
Lesser Known Alternative
Pros
Very cheap to powerProduce almost no heatColor changing models
Lesser Known Alternative
Cons
About $35 for a bulb
Lesser Known Alternative
As costs fall these will become the standard
Light Bulb Selection?
Less choice = quicker decision making
Long term thinking and logic are necessary
Light Bulb Selection?
Decision Complexity = Low
Light Bulb Selection?
Incandescent Light Bulb Ban
Light Bulb Selection?
Will be phased out in California by 2018 due to usage costs
Government buildings in CA will be converted to fluorescent lighting within 3 years
Light Bulb Selection?
Brazil & Venezuela at forefront to phase them out in 2005
In Australia incandescent lighting will be banned by 2010
European union proposed a ban on manufacturing new incandescent bulbs
So how does this affect you?
If you buy compact fluorescent bulbs(preferably the eco-friendly kind)
Then you will
Save moneyHave whiter light
Not get burned if you fall on one
Questions?
