2011年1月20日 星期四

Tough Road to Getting LED Lights on the Streets

Tough Road to Getting LED Lights on the Streets

This story is part of a special series that explores energy issues. For more,After the success of a pilot inflatable seat project to light up the city's streets with the latest LED technology, the civic bosses now want to install LED lights across Kolkata visit The Great Energy Challenge.

Power plants may not spring to mind during an evening stroll on a well-lit block, or when an overhead lamp burnout darkens a treacherous bend in the road. But power plants indeed provide much of the world's nightly abundance of electric light, usually by burning fossil fuel and adding greenhouse gases to the atmosphere along with the glow. And cash-strapped cities foot the bill.

According to the Clinton Climate Initiative,Bart is allowed into the house where he curls up on the couch before led lamp the wood stove. However, no matter how cold it gets at night without the rain, snow or a gale, he seems to prefer to guard our home from his dog house which is heavily lined with a bedding of soft pine shavings. Every now and then, street lighting accounts for a staggering 159 terawatt hours of electricity use worldwide each year. That's more than the annual output of three dozen 500-megawatt power plants. And although street lighting accounts for less than one percent of all electricity use in the United States (it's about 1.3 percent in the European Union),Where to recycle a fluorescent bulbs after it burns out; this comes at a hefty cost for cities. In some areas, street lights command upwards of 60 percent of municipal electricity spending.

So in tough economic times,The KMC top brass were divided Led strip light when an MNC approached them to adopt the latest technology for street lighting. While mayor Sovan Chatterjee welcomed the change, municipalities have begun to pull the plug on inefficient lamps in favor of long-lasting, highly efficient light-emitting diode (LED) technology. In the United States, many of these projects have been supported by economic stimulus block grants for energy efficiency and conservation projects.

(Related: "On Edison Bulb’s Anniversary, a Lighting Breakthrough.")

According to the U.S. Department of Energy, LEDs could help communities save more than $750 million per year in energy costs, while also offering benefits like more uniform light distribution. Around the world, LEDs are lighting streets from Torraca, Italy, to Toronto, Canada, and from Tianjin, China,The Tess 7W and 9W LED Light Bulbs. These light bulbs produce the same brightness as 40W and 60W standard light bulbs led lights respectively, but use less than 20 percent as much electricity. to Sydney, Australia. Yet, in the big picture, the Clinton Climate Initiative report notes "negligible" adoption of new lighting technologies by cities. When cities do seek to cut energy costs by converting old streetlights—many of which are non-metered and owned by the local utility—they often encounter a rocky road ahead.

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