Incandescent ◦ Inexpensive ◦ Good color ◦ Work well with devices ◦ Produce heat ◦ Short life
Halogen ◦ Last longer ◦ Don’t dim with age ◦ Produce extreme heat
Fluorescent ◦ Efficient ◦ Long life ◦ Many colors, types and sizes ◦ Quiet electronic ballasts ◦ Contain mercury
Compact Fluorescent Lights (CFLs) ◦ Standard bases ◦ Efficient ◦ Long life ◦ Quick start time ◦ Color ◦ Brightness
Solid State – LED ◦ Most efficient ◦ Very long life ◦ Colored light ◦ Expensive ◦ Not readily available for residential use
13-Watt Spiral CFL60-Watt Incandescent Initial Purchase$3.77$0.27 Replacement Costs (estimated 7 bulbs) $0.00$1.89 Energy Costs (based on $0.10/kWh, 8,000- hour bulb) $12.00$48.00 Total Cost$15.77$50.16 Estimated Savings$34.39 Using a GE Energy Smart® bulb vs. standard incandescent bulb http://www.gelighting.com/na/home_lighting/products/energy_smart.htm
Starting time ◦ Quick turn on time ◦ “instant on” Color ◦ Wide variety Bulb position Outdoor use There are large differences in light, cost and turn-on time among different manufacturers.
Type of BulbIncandescentFluorescent (CFL) Power Used (watts)6013 Light Output (lumens) 800 Lifetime (hours)750 – 1,0006,000 – 15,000 Lifecycle Cost*$40$10 *Based on a 6,000-hour CFL, a 1,000-hour incandescent, use of 3 hrs/day, 11.09¢/kWh electric rate, $3.00 CFL and $0.50 Incandescent.
A single 20-watt CFL used in place of a 75-watt incandescent will save about 550 kilowatt-hours over its lifetime. That savings represents nearly 500 pounds of coal not burned, which means 1,300 lbs. of carbon dioxide & 20 lbs. of sulfur dioxide are not released
Voluntary Action ◦ Public education on CFLs Incentives ◦ Subsidies and/or give-aways Legislation ◦ Some counties have banned incandescents ◦ U.S., Australia and Canada set efficiency standards ◦ The Energy Independence and Security Act of 2007 (“The Energy Bill”)
All bulbs must use 30% less energy than today’s incandescent bulbs by 2012-2014 ◦ 2012Phase out 100W bulbs ◦ 2014End with 40W bulbs ◦ 2020All must be 70% more efficient (= to today’s CFLs) Lighting ~ 20% average household’s energy bill This bill could cut nation’s electric bill by more than $10 billion a year Many types of incandescent bulbs are exempt
Determine where and use Shape Size Base Color Lumens Watts Type Label – Energy Star
Read the Package Hold the base, not the glass to screw in the bulb Use CFLs in places where you will have the light on for at least 15 minutes at a time Most photocells and timers do not work with CFLs Recycle CFLs Follow guide-lines to clean up a broken CFL
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