The scientific name of the energy-saving lamp is called compact three-color electronic fluorescent lamp (CFL lamp for short). It was first invented by foreign manufacturers in 1978. Because it has high luminous efficiency (5 times that of ordinary light bulb), the energy saving effect is obvious and the life is long (it is ordinary 8 times of light bulbs, small size, easy to use, etc., has been valued and welcomed by people of all countries and countries. In 1982, China first developed SL-type compact fluorescent lamps at the Institute of Electric Light Sources of Fudan University. Rapid growth and steady improvement in quality have been promoted and used by the state as a national key energy-saving product (green lighting products).
The working principle of the energy-saving lamp is to heat the lamp filament through the ballast. At about 1160K, the filament starts to emit electrons (because some electron powder is coated on the filament), and the electron collides with the argon atom to produce an inelastic collision, argon atom. After the collision, energy is obtained and it hits the mercury atom. The mercury atom breaks and generates ionization after absorbing energy. It emits 253.7nm ultraviolet light, and the ultraviolet light excites the phosphor to emit light. The temperature of the filament is about 1160K when the fluorescent lamp works, and the temperature is 2200K than that of the incandescent lamp. -2700K is much lower, so its life is also greatly improved, reaching more than 5,000 hours. Because it does not have the current thermal effect like incandescent lamps, the energy conversion efficiency of the phosphor is also high, reaching more than 60 lumens per watt.
The ordinary incandescent lighting effect is about 10 lumens per watt, and its life span is about 2000 hours. Its working principle is: when the lamp is connected to the circuit, the current flows through the filament, and the thermal effect of the current causes the incandescent lamp to emit continuous visible light and infrared rays. The phenomenon can be noticed when the filament temperature rises to 700K. Most of the energy is wasted in the form of infrared radiation due to the high filament temperature during operation.
In addition to white light, the energy-saving lamps also have yellow (warm light) light. In general, under the same wattage, an energy-saving lamp is 80% more energy efficient than incandescent lamps, with an average life expectancy of 6-8 times and heat radiation of only 20%. In the non-strict case, a 5 watt energy-saving lamp can be regarded as an incandescent lamp equal to 25 watts, a 7-watt energy-saving lamp is about 40 watts, and a 9-watt is equivalent to 60 watts.
For quite a long period of time, some localities and manufacturers blindly increased the energy-saving lamp project. Because the funds, technology, raw materials and processes were not fully implemented, the quality of the products could not be guaranteed, and the product quality of each enterprise. Unbalanced, some manufacturers do not produce according to the process requirements, assembly plants use unqualified lamps and components to make up the composition, low quality and low price, seriously damaged the reputation of energy-saving lamps, low light efficiency, short life, poor consistency, The claim that energy-saving lamps in the society generate energy-saving and not save money has brought about a great negative impact on the promotion of energy-saving lamps.
After more than 20 years of development, China's energy-saving lamp product manufacturing technology has made great progress and improvement. Many products have approached or reached the advanced level of foreign countries. Due to the high quality and low price, the competitiveness in the international market is very high. Strong. However, there are still a large number of energy-saving lamp manufacturers in the market. Regardless of the laws and regulations of the country, regardless of the interests of consumers, mass production of energy-saving lamps that are not "energy-saving" is still being produced. Because of its low quality and low price, each price is only sold. Around 5 yuan, consumers have limited identification of products. In rural areas and most cities, there is still a large part of the market. Since most of the markets are occupied by low-end products, it is difficult for good energy-saving lamps to enter the market. It has brought certain difficulties to the promotion of green lighting. However, with the improvement of residents' awareness of energy conservation and the deep knowledge of energy-saving lamp products, the market of high-quality energy-saving lamps is expanding day by day. However, LED lighting is developing at a high speed and energy-saving efficiency is excellent. Will be the dominant lighting in the future.
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