Reducing
electricity needed for lighting will reduce greenhouse gas emissions, save
billions of dollars and reduce our dependence on fossil fuels. There's no doubt
that light-emitting diodes (LEDs) will help reduce electricity needs. They
already dominate the market for traffic lights, automotive tail lights, store
signs and other specialty design applications. Can they penetrate the
residential market and perhaps dominate?
LED
lighting is beginning to appear in the residential market. The technology is
advancing at a fast pace with increased efficiencies and new products coming to
market. Lofty prices are the biggest limitation to residential use. As the
technology and market acceptance improves, production volumes will increase,
more manufacturers and distributors will enter the market, product selection
will improve and prices will fall. Led
strip distributor today can cost more than 4 times as much as comparable
compact fluorescents (CFLs).
Is
LED lighting a suitable residential alternative to incandescents or CFLs?
It
depends...... on the application and the cost. They're environmentally friendly
and cost aside; they're very effective for under counter and accent lighting,
landscape lights and night lights. Consider a "test drive" before
buying LEDs for reading lamps, spots or floods. Cost may be a barrier. If not,
it's a matter of personal preference.
Advantages
of LEDs:
1.Very
low energy consumption
2.Long
service life - up to 50,000 hours
3.Rugged
and durable - resistant to thermal and vibration shocks
4.Superior
directional light distribution (spots)
5.No
infrared or ultraviolet radiation
6.Safe
and environmentally friendly - cool to the touch, contain no mercury
7.Instant
activation, no flicker, dimmable
8.Broad
color range - can produce white light and all colors of the spectrum
Disadvantages:
1.Expensive
2.Limited
variety
3.Limited
availability
4.Heat
sensitive; excessive heat will reduce effective life
5.Lenses
or reflectors needed to create a controlled, broad beam (floods)
6.Colors
may differ from incandescent and fluorescent
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