In the solar cell project, the silicon material, which is located in the industry source, is heavily dependent on Europe, America and Japan, and the application market mainly depends on the international market. The shortage of raw material of silicon has become the major bottleneck restricting the development of solar cell industry in china. At present, domestic solar energy collection and conversion of electrical energy technology is not yet mature, the energy conversion efficiency is relatively low, but also for the sunshine conditions more stringent requirements, in cloudy or sunlight is not strong weather it is very difficult to collect enough energy, also can not meet the needs of all night lighting.
Secondly, the use of solar lighting in a narrow range, in the plural floors of the residential area, only the top floor of the residents can meet adequate lighting conditions, other floors of the residents can not play the lighting effect of solar energy lamp.
Finally, solar lighting is not absolute zero energy, which convert solar energy into electric energy and solar energy collection process also need to consume conventional energy, and many domestic production of solar energy lamp manufacturers did not lead to the technical standards, energy consumption but higher than LED ordinary lamps, energy consumption can even reach the incandescent lamp. Plus its cost is higher than ordinary LED lights, so for home users, it is not a particularly ideal choice.
Mr Liu believes that the current application of solar energy lighting is mainly some outdoor public lighting facilities, such as the green belt area, industrial area, green belt, landscape lighting, scenic areas, parks, gardens, squares and green spaces and other local lighting. Outdoor facilities can ensure the adequate supply of solar energy, and through intelligent control switch, can effectively save energy, and ensure the stability of lighting effect.
Solar energy saving lighting contributes a lot to the energy saving of public facilities in our country. Mr. Liao is full of confidence in the future of solar energy saving lighting. I believe that with the popularization and development of solar energy technology, solar energy saving lighting technology and application will usher in greater glories.
From the China Lighting Electrical Association learned that, after the world’s more than a dozen countries and regions have gradually released the incandescent light out plan, China will also recently issued a “phase out incandescent road map.”. It is reported that by 2016, China will gradually eliminate incandescent lamps in stages, and then fully introduce energy-saving lamps with annual energy saving of 48 billion degrees.
Data show that in 2010, the total output of domestic incandescent lamp reached 3 billion 850 million. According to estimates, so many incandescent lamps, such as completely replaced by energy-saving lamps, will form a market space of up to 500 billion yuan. In 2010, China’s total output of energy-saving lamps was about 4 billion 260 million, accounting for about 80% of the total output of the world. Among them, there were about 20 enterprises with an annual output of more than 50 million, accounting for 82.2% of the total output of the industry
From the national semiconductor lighting engineering research and development and Industry Alliance data show that in 2010 the overall size of China’s energy-saving lamp market reached about 100 billion yuan. Expected by 2015, the domestic energy-saving lamp market will reach more than 500 billion yuan, the annual compound growth rate will reach 38%. From the cost point of view, to the current generally optimistic about the LED lights, for example, in the next 10 years, is expected to be 20 times higher brightness, and the cost will fall to the existing 1/10.
In addition, the policy continues to “overweight” will become a driving force for industrial growth. To the “phasing out incandescent lamp roadmap” introduced as a sign, energy-saving lamps instead of incandescent lamps will accelerate the process. At the same time, the relevant departments introduced a series of energy-saving projects such as “Huimin”, “Ten City thousand lamp” program, in promoting energy-saving lamp transformation and application also played a positive role.
Experts said that in the long run, as the pace of incandescent light elimination accelerated, the global energy-saving lamp Market outbreak growth just around the corner. Therefore, for domestic enterprises, after the completion of industrial restructuring, a group of powerful enterprises will usher in the golden period of performance growth.
At the end of the month, Beijing City Consumers Association published a comparative test on 53 types of energy-saving lamps, energy saving lamps more than 20% did not meet in the initial light effect index to reflect the effect of energy saving, power and more than 70% energy-saving lamps of vacuity, the measured performance did not reach the level of the express business value.
The initial light efficiency is an important index to reflect whether energy-saving lamps have energy-saving effect, and not accord with GB will lead to energy-saving lamps can not achieve the effect of energy saving. The test, there are 13 samples, the initial luminous efficiency is not standard, accounting for 24.53%. And according to the enterprise express value and measured value contrast, to see whether to achieve the express energy efficiency grade, 53 samples 636 energy-saving lamps have 155, not express value.
In the light power, there are 17 do not meet the national standard, “PHILPS” 5W energy-saving lamps in which, measured 12 energy-saving lamps, power are more than 6W. According to the enterprise express value and measured value contrast, 53 samples of 636 energy-saving lamps, 459 power measured values have not reached the express value, accounting for 7 into more, some products deviation is bigger.
City Association Secretary General Dong Qing pointed out that the results of energy-saving lamp energy-saving lamp is not ideal, not the national compulsory certification of products, access to lower the threshold, making the market of energy-saving lamp enterprises some enterprises deliberately high standard of dragons and fishes jumbled together, or with low power, poor quality of component assembly, resulting in the quality of the products did not reach the corresponding requirements.
In recent years, China by “power shortage” problem, especially the summer peak electricity to power supply situation across the country. At present, China’s lighting consumption accounts for about 20% of the total electricity consumption. Therefore, lowering the power consumption of lighting is an important way to save electricity, and LED energy-saving lamps come into being.
LED is a semiconductor light-emitting diode, LED energy-saving lamp with high brightness white light emitting diode light source, high luminous efficiency, low power consumption, long service life, easy control, maintenance, safety and environmental protection; is a new generation of solid cold light source, light color and soft, beautiful, rich and colorful, low loss, low energy consumption, green environmental protection, application family, shopping malls, banks, hospitals, hotels, restaurants and other public places lighting for a long time. Below, a detailed description of the characteristics of LED energy-saving lamps.
(1) high luminous efficiency;
LED light effect after improvement will reach 50 ~ 200 LM / W, and the good light, monochromatic narrow spectrum, without filtering color light directly visible light, can put 90% of the electrical energy into visible light (ordinary incandescent lamp 80% of the electrical energy into heat energy into electricity, only 20% light). At present, all countries in the world are stepping up efforts to improve the LED light efficiency research, and in the near future, the luminous efficiency will be greater.
(2) less power consumption;
LED single tube power 0.03 ~ 0.06 watts, using DC drive, single tube drive voltage 1.5 ~ 3.5 volts, current 15~20 Ma, fast response, can be operated at high frequency. The same lighting effect, power consumption is 1/10 of incandescent bulbs, fluorescent tubes 1/2, one thousand hours consumption of electricity (ordinary 60W incandescent lamp seventeen hours consumption 1 kwh, 10W ordinary energy-saving lamps one hundred hours consumption 1 kwh).
(3) long service life;
The semiconductor chip light, no filament lamp LED, small volume and light weight, epoxy resin packaging, can withstand high strength mechanical shock and vibration, not easily broken, the average life expectancy of 100 thousand hours (ordinary incandescent lamp life of only one thousand hours, ordinary energy-saving lamp life is only eight thousand hours), the service life of up to 5 ~ 10 years. While reducing the unit use cost, it can save a great deal of energy, which is of great significance to the energy intensive china.
(4) strong safety and reliability
Low heat, no ultraviolet and infrared rays, no radiation, cold light source, can be safely arrived at touch: can accurately control the light type and angle, soft light, no glare; LED light for all solid body, shock resistance, impact resistance is not easy broken. The built-in micro processing system can control the luminous intensity, adjust the light emitting mode, and realize the combination of light and art.
(5) green environmental protection
Non mercury, sodium and other substances that may be hazardous to health, waste can be recycled, no pollution. And there will be no electromagnetic interference (common tubes contain mercury and lead and other elements, electronic ballasts in energy-saving lamps will cause electromagnetic interference).
To sum up, LED energy-saving lamps have very prominent advantages, and popularizing LED energy-saving lamps will help our country achieve the goal of energy saving and emission reduction. But in reality, there are still many problems to be solved, such as increasing publicity, popularizing LED knowledge, improving production technology, reducing costs, and promoting LED energy-saving lamps to be recognized and accepted by consumers. We have reason to believe that LED, as a new type of energy saving and environmental friendly green light source, will shine brilliantly in the future market.
Organic light emitting diode two (OLED) is a sandwich type electronic device, that is, between the two electrodes, there are a number of organic film layer. OLED as a planar light source, because the issue of light is very close to natural light, non-toxic environmental protection, can adopt the traditional semiconductor coating processing and can be fabricated on a flexible substrate, it is generally thought that will have important applications in the field of general lighting. Although OLED lighting products are on the market recently, their expensive prices have greatly hindered the development of their own. The current price of inorganic LED for lighting 7-10 $/kilo-lumen, lighting energy-saving lamps on the market price is about 22 RMB /kilo-lumen, OLED lighting, the U.S. Department of energy to the lighting price can be reduced to 20-25 $/kilo-lumen in 2020, therefore, the existing OLED technology and material upgrade has become imminent. Next, talk about the views and suggestions in this regard.
The lighting price of lamps is the key factor to decide whether to market. OLED lighting prices can be expressed by the following formula:
OLED lighting: opportunities and challenges
The mid molecule is the production cost per square meter panel. The denominator is the luminous flux (or brightness) provided by the panel per square meter under the rated voltage. We know that the cost of production depends on the production scale, which is the industry a lot of people send the OLED lighting industry of hope, but the mass production of any product must have a premise, namely the product must be practical, therefore, OLED lighting should be the first to solve the problem in the 1 Formula denominator, i.e. improved OLED lamp light exitance (or flux and brightness). The light emission of OLED can be expressed by the following formula:
OLED lighting: opportunities and challenges
At present, power efficiency is an indicator of everyone is very concerned about the power efficiency of the single point white light OLED can reach about 80 lm/W, but in the future production of OLED lighting panel size 15 cm by 15 cm or more, the power efficiency can be maintained in 30-40 lm/W has been very good, very short period of time difficult to have greatly improved, therefore, by increasing the power OLED lighting panel to improve the OLED lamp light exitance is a very practical and effective method is feasible, it also can greatly reduce the price of OLED lighting (see equation 1). To improve the power of the OLED is actually a high current and low voltage performance we know (on the same page and inorganic LED, inorganic LED now emphasizes is the high power chip preparation technology), PIN OLED is representative of this technology.
Energy saving lamps, also called compact fluorescent lamps, are considered as substitutes for traditional incandescent lamps because of their energy saving efficiency. The energy saving lamp mainly heats the lamp tube filament through the ballast. When the temperature is about 1160K, the filament starts to emit electrons (the filament is coated with electronic powder). Inelastic collision of electron collision of argon, argon atom collision energy and impact were obtained after Mercury, mercury atomic transition after absorbing energy ionization, emit 253.7nm ultraviolet, UV excited phosphor. As the fluorescent lamp work, the temperature of the filament is about 1160K, and it is much lower than that of the incandescent lamp, so the life of 2200K~2700K is greatly improved, reaching more than 5000 hours. Because it does not have the current thermal effect of incandescent lamp, the energy conversion efficiency of phosphor is also high, reaching 50 lumens per watt.
The luminous efficiency of energy-saving lamps is 5 times that of incandescent lamps, and 4~6 times more than that of ordinary incandescent lamps 60%~80%. Promotion of energy-saving lamps can effectively save energy, but the lamp contains heavy metal mercury, once the tube is damaged, lead to mercury exposure, it will cause harm to the environment and human health. At present, the “national hazardous waste list” has been included in the energy-saving lamps.
With the incandescent lamp slowly withdraw from the lighting stage, energy-saving lamps with energy saving, long life, beautiful shape and other advantages, in the consumer has won high popularity. But in recent years, the mercury pollution problems of energy-saving lamps have also been highly concerned by the whole society. On the one hand, we use energy-saving lamps to save electricity, but on the other hand, it creates new environmental pollution. How can mercury pollution in energy-saving lamps come from? How to innovate technology, perfect management and effectively reduce this potential risk in production? This issue should be interpreted one by one.
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