All the Things you'll Want to Find out about LED Gentle Bulbs > 자유게시판

• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

Incandescent period, RIP. Like it or not, it's time to maneuver on. Traditional incandescent lightbulbs are gone-not banned, exactly, but phased out as a result of the Power Independence and Security Act (EISA), passed in 2007, requires them to be about 25 percent extra environment friendly. That's unattainable to realize without reducing their luminous flux (brightness), so, as a substitute, manufacturers have shifted to extra power-environment friendly applied sciences, equivalent to compact fluorescents (CFLs), halogens, and LEDs. After all, not everyone seems to be embracing these subsequent-gen lightbulbs. Some wonder why we'd like a mandate to make use of them, in the event that they're so nice. The fact is, after greater than a century of incandescents, we've change into connected to them. They're cheap, they dim predictably, and so they emit a heat and acquainted glow. Weaning ourselves off them won't be easy: Simply because the 40- and 60-watt phaseout went into effect on Jan. 1, about half of the 3.2 billion screw-base bulb sockets nationwide still housed incandescent bulbs.

So, what now? In line with a survey by swap producer Lutron, two-thirds of American adults are unaware of the phaseout, however only one in 10 are "very knowledgeable" about replacement choices. Most of us will most likely purchase halogens with out even noticing. At about a dollar apiece they're low cost, and they appear, really feel, and operate almost precisely like traditional incandescents. However they're only about 25 percent more efficient-just sufficient to meet EISA requirements. In the meantime, CFLs, that are inherently flawed and generally unpopular, are steadily losing market share. That leaves LEDs, which provide essentially the most sustainable-and exciting-various to incandescents. For starters, they're highly environment friendly: The common efficacy of an LED bulb is 78 lm/w (lumens per watt), in contrast with around thirteen lm/w for an incandescent and approximately 18 lm/w for a halogen equal. Sure, LEDs have their shortcomings: EcoLight energy Shopping for an LED bulb doesn't appear as intuitive as choosing up an incandescent out of your local drugstore, EcoLight and the up-entrance price is high. However once you get to know the know-how and the incomparable versatility that LEDs supply, you will see the demise of the incandescent as a possibility.

Here is a primer that addresses your considerations and helps you navigate the dazzling array of decisions. The times of the $30 LED bulb are over. As demand has elevated and manufacturing processes have develop into extra streamlined, costs have plummeted. Moreover, utility firm rebates have driven the value of many family replacements to under $10; in some regions they cost half that. Positive, that is a long way from the 50-cent incandescent, but con sider this: LED bulbs eat one-sixth the power of incandescents and final up to 25 occasions longer. Changing a 60-watt incandescent with an LED equal will save you $130 in power costs over the brand new bulb's lifetime. The typical American household might slash $one hundred fifty from its annual vitality invoice by replacing all incandescents with LED bulbs. What Am I Taking a look at Here? Today all lightbulb packaging carries the Federal Trade Fee's Lighting Facts label, which lets you compare similar bulbs with out counting on watts as the only indicator of efficiency.

It provides information in regards to the bulb's brightness (in lumens); yearly cost (primarily based on three hours of day by day use); life expectancy (in years); mild look, or shade temperature, measured in Kelvins (Ok); and EcoLight energy consumed (in watts). Remember: An LED bulb's wattage score would not point out its brightness; its lumens rating does. A 60-watt-equivalent LED bulb delivers about 800 lumens, roughly the identical as a 60-watt incandescent. You may even see a different label produced by the Division of Power. Confusingly, it is also referred to as Lighting Information, though it's geared extra towards retailers than customers. The DOE label does not give the bulb's estimated yearly cost or life expectancy, nevertheless it does provide information on the bulb's colour accuracy (extra on this later). The higher the bulb's colour temperature, the cooler its gentle. A candle glows at a shade temperature of 1500 K. That CFL you tried however hated because its light was too harsh was in all probability operating at round 4500 Ok. LED bulbs marketed as incandescent replacements normally have a shade temperature of 2700 Okay, which is equal to typical warm white incandescents.

However that's only part of the story. The quality of a bulb's mild additionally depends on its color accuracy, additionally known as the shade rendering index (CRI). The higher the bulb's CRI, the extra realistically it reveals colors. Incandescent lightbulbs have a CRI of 100, EcoLight however most CFLs and LED bulbs have CRIs in the 80s. In response to a recent examine by the DOE, only a handful of LED bulbs have CRIs in the 90s, although that may improve as efficacy will increase. Note that the CRI isn't all the time listed on the packaging, so you could have to go looking the producer's web site for it. These Bulbs Dim, Proper? LED bulbs bought as "dimmable" work acceptably with most newer switches. The very best dim to about 5 p.c, though at that stage some produce a faint buzzing. Make certain you buy a bulb that has been verified to work properly with your swap; examine the producer's webpage for an inventory of suitable dimmers.