At present, LED light efficiency is higher than traditional lighting and display light sources, showing superior energy-saving effects, such as traffic signals, landscape lighting and other special lighting fields, energy-saving effects of more than 80%; compared with traditional lighting, functional lighting For example, LED road lighting can save more than 30%, tunnel lighting can save 40%, LED indoor downlights, spotlights and other lighting products can replace traditional halogen lamps and fluorescent lamps to save energy by 30%~50%. Since 2009, in ' Under the impetus of the Ten City Wanhao 'Pilot Demonstration Application Project (hereinafter referred to as 'Ten City Wanhao'), the speed of domestic technological progress has obviously accelerated. At present, domestic power LED chips have been applied in some road lighting, indoor downlights and spotlights. Through the integration of optical design, heat dissipation, driving and other technologies, the indoor and outdoor functional lighting fixtures have exceeded 80lm/W. According to the preliminary statistics of 21 pilot cities, as of now, there are more than 500,000 street lamps, tunnel lights and solar LEDs. Street lamps, LED fluorescent lamps, downlights, spotlights, stage lights and other products have been demonstrated and used, saving more than 100 million kWh per year. In addition, driven by the Olympic demonstration project, in addition to the extensive use of LED landscape lighting in the Shanghai World Expo and the Guangzhou Asian Games, some roads and indoor lighting will also demonstrate the application of semiconductor lighting products.
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LED low carbon life makes an important contribution
According to estimates, the energy consumption of the LED lamp with a luminous efficacy of 75 lm/W (240 kWh) is much lower than that of incandescent lamps (1505 kWh) and lower than that of compact fluorescent lamps (327 kWh). Low features. At the same time, LEDs do not have fluorescent lamps, energy-saving lamps, and cold cathode tubes (CCFLs) used in existing LCD TVs and LCD backlights. They can greatly reduce the environmental pollution of used lamps, and LED lamps are powered by low-voltage DC. Infrared and ultraviolet radiation are truly green and healthy lighting sources.
In 2009, China's total power generation was 3,650.6 billion kWh, and lighting used was about 430 billion kWh, accounting for 12% of total electricity consumption, accounting for 5.9% of energy consumption, and growing at a rate of 5% to 10% per year. According to the prediction of Chinese experts, in 2015, the electricity consumption for lighting will reach 600 billion kWh (an annual increase of 3%~5%), the luminous efficacy of LED lamps can reach 120lm/W, and LED lighting accounts for more than 20% of the lighting market. Saving 100 billion kWh of electricity, reducing CO2, SO2, NOx, and dust emissions by 150 million tons, and building 21 units of 1 million kilowatts of power stations, reducing 30% of new power stations (2015 is expected to add 1 million kilowatts of power stations) About 63 seats). It is estimated that in 2020, the lighting power will reach 720 billion kWh, the luminous efficiency of LED lamps will reach 150lm/W, and enter the 50% lighting market. The annual energy saving will be 340 billion kWh, and the construction of 73 million kilowatt power stations will be reduced. Through lighting, we do not need to add new power stations.
LED itself causes investment heat