
CFLs are growing in popularity because of energy efficiency. They use less energy, less wattage and have the same light quality. But what’s the difference between the Incandescents and CFL’s? The Aiken Standard breaks it down for you.
Incandescent bulbs will begin to phase out phase-out next year under federal legislation passed in 2007. Under the measure, all light bulbs must use 25 percent to 30 percent less energy than today’s products by 2012 to 2014. The phase-in will start with 100-watt bulbs in January 2012 and end with 40-watt bulbs in January 2014. By 2020, bulbs must be 70 percent more efficient.
According to EnergyStar, if every American home replaced just one light with a CFL, enough energy would be saved to light 3 million homes for one year, to save about $600 million in annual energy costs and to prevent 9 billion pounds of greenhouse gas emissions per year, equivalent to those from about 800,000 cars.
Incandescent light bulbs create light by passing electricity through a metal filament until it becomes so hot that it glows. These bulbs are familiar to most people and are the most inexpensive option as far as upfront costs.
However, they are not as energy efficient, lasting only 700 to 1,000 hours, they emit 90 percent of their energy as heat.
In CFL’s, an electric current is driven through a tube containing gases. This reaction produces ultraviolet light that gets transformed into visible light by the fluorescent coating on the inside of the tube.
CFL’s last up to 10 times longer than incandescents and use up to 75 percent less energy. This translates into more than $40 saving per bulb in energy costs over its lifetime. They come in a variety of shapes.
They do have some cons. They contain a small amount of mercury, four milligrams and are more expensive than incandescents. The bulb takes a few seconds to produce light as the gas warms up.
LEDs Use light-emitting diodes to produce light. The movement of electrons through a semiconductor material illuminates the diodes. These types of bulbs use at least 75 percent less energy and last at least 15 times longer than an incandescent bulb.
Original article can be seen on TMCnet.com