Do not pay for the light? Campus facelift LED lights 5 years, nearly 8 million provinces

CNR network news, the world is profitable, do not compensate for the sale of it? Yes Recently, all the lights in the campus of Dalian University of technology have been renewed and the brightness has been greatly increased. The "facelift", the total replacement of the school more than 41000 lamps, but not only did not spend a penny school, a year down will save a lot of money.

According to the Dalian Industrial University General Office Director Liu Zhenguo introduced, all the school replaced is the LED energy-saving lamps, these lamps provide lighting enterprises by free, the school does not need to spend extra money, as long as the contract period (5 years) in the annual electricity savings to pay a portion of the enterprise is enough. He gave a sum of money: the school last year lighting electricity 2 million 280 thousand yuan, lighting maintenance costs 300 thousand yuan, totaling 2 million 580 thousand yuan. Replaced by LED energy-saving lamps, the year's electricity is only about 1 million, lighting maintenance fees in five years can be basically removed, so that one year savings of nearly 1 million 600 thousand, 5 years is 8 million.

LED energy-saving lamps in the energy efficiency in the end what? Professor Zou Nianyu, director of the photonics Institute at the Dalian Institute of technology, wrote another bill: "LED is the abbreviation of Light-Emitting Diode.". LED light source is the light source of light-emitting diode, which is another new revolution of lighting technology since Edison invented incandescent lamp.

LED energy-saving lamps have the advantages of incandescent and other lamps that are hard to shoulder: longer life. Ordinary incandescent lamp life only one thousand hours, ordinary energy-saving lamps only eight thousand hours. Under normal circumstances, the use of LED lights, its life is generally fifty thousand hours. This greatly reduces the maintenance costs of lamps, avoid frequent changes in the pain. Save electricity. LED light consumption is very low, in the same lighting effect, the use of 45 watts of ordinary fluorescent lighting effect is equivalent to only 15 watts of LED light source. Higher light efficiency. In the lighting industry, the lumen is used to describe how much radiant energy the luminaire radiates. Incandescent light efficiency of about 20 lumens / watt, fluorescent lamp is 60 lumens / watt, while LED lighting effect can reach 120 lumens / watt, and with technological progress will continue to improve. Better light color controllability. The luminous color and brightness of LED are variable, and can be adjusted according to actual needs, so that the light environment can be changed as required. Higher safety factor. LED light is a cold light source, not heating, the use of direct current, small voltage, small risk, safety factor will be higher. Greener. LED lamp, no harmful metal mercury, non-toxic, no infrared and ultraviolet radiation, will not produce electromagnetic interference, shock resistance, impact resistance, not easy to break, and then use Recyclable. More conducive to healthy lighting. After the circuit design and reasonable optical design, LED lamps can be no flicker, no glare, light more soft, conducive to the protection of eyesight, and make life more comfortable and healthy learning environment. Dalian University of Technology campus green lighting, earned not only "light", but also to earn savings, environmental protection and health, indeed, do not lose money.

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