2010年10月13日 星期三

Eco-Friendly Light Bulbs

Eco-Friendly Light Bulbs

While fluorescent lighting has been available for many years, for a long time the bulbs were only available in the long, tube-shaped variety. The only bulbs available to fit many fixtures were incandescent light bulbs. Incandescent bulbs work by heating a coil inside the light bulbs, called a filament, to a high temperature. This produces light. However, incandescent bulbs convert only 5% of the energy they use into light.

In contrast, CFL bulbs use on average 75% less energy to achieve the same amount of light.fluorescent bulbs CFL bulbs also last years longer than their incandescent counterparts, meaning less waste for consumers. Combining the energy savings of a CFL bulb with the bulb's extended life translates to a potential savings of $30 or more during the lifetime of each bulb. This makes purchasing CFL bulbs not only an environmentally-friendly option,Projector Lamp but a budget-savvy decision as well.

How Compact Fluorescent (CFL) Light Bulbs Work
Rather than using heat to create light,Led lamp light fluorescent light bulbs rely on a chemical reaction. The bulbs are filled with a gas that produced ultraviolet (UV) light when it comes into contact with electricity.led downlight The amount of electricity needed to excite the gas and produce light in this manner is just a fraction of the power needed to use incandescent bulbs.

Since UV light is not visible to the human eye, it must go through a special filter in order to be useful. Fluorescent light bulbs contain a white coating on the inside of the bulb that acts as this filter; when the UV light passes though the coating, it changes into light that you can see.

While most traditional, tube-style fluorescent lights have a self-contained ballast, most require a separate ballast in order to function. CFL bulbs, on the other hand, always contain their own ballast. Since external ballasts should always be changed by a licensed electrician, the built-in ballast in a CFL bulb makes the product easy for consumers to use and change.

EnergyStar Light Bulbs
EnergyStar is a joint program of the United States Department of Energy and the Environmental Protection Agency that identifies energy efficient products. Look for the EnergyStar logo on any light bulbs you purchase to be sure that they are energy efficient and therefore environmentally friendly.led tube

In order to receive the EnergyStar seal, products must meet stringent energy use standards. The seal appears on all energy efficient products sold in the United States, encouraging consumers to be conscious of their personal energy usage.

沒有留言:

張貼留言