2010年10月12日 星期二

Green House - LED Light Bulbs

Green House - LED Light Bulbs

Green is about long-term. Reducing the impact on the environment takes time, and an investment. More than monetary motivation is needed to use Green; it takes a dedication to the furthering of the technology and practices.

One industry currently going through a Green revolution is home lighting. Incandescent Bulbs have been around for over 100 years, with Compact Fluorescent bulbs gaining substantial market traction.deck lighting LED bulbs are the relatively new entrants to this industry with some exciting promises. LEDs (Light Emitting Diodes) have been around for quite some time, but have historically been used in specific implementations where cost is not a factor. Recently,compact fluorescent light bulbs LEDs have been prominent for implementation in- vehicle lights, TVs, and computer monitors to name a few. This growing adoption has driven the price of LEDs lower and lower.

Consumer LED bulbs are comprised of multiple small LEDs (18+). They provide a direct stream of light, illuminating wherever you point the light. The majority of bulbs are the color of daylight, but many different color options are available. They run extremely cool compared to incandescent light bulbs, and are encased in plastic for increased durability.

Application

Lighting accounts for 20 to 50 percent of total energy consumed for a house. The efficiency of a light source is measured in lumens per watt. As an example,deck light a 40-watt bulb produces 390 lumens, or 12.6 lumens per watt. According to Wikipedia, Halogen is 24, fluorescent, 56; LEDs, 131; and low-pressure sodium is 200.compact fluorescent light bulb According to ccrane.com, a 36 LED light bulb uses 3 watts, has a 60,000-hour bulb life, and a 60-lumen output. Given that the 40-watt bulb produces 390 lumens, 60 lumens is quite dim. There are other bulbs with a higher lumen count, but are classified as spotlights. As this technology evolves, we will see bulbs with larger LED clusters compete with other light sources on the brightness issue.

沒有留言:

張貼留言