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?