Lamp, in our life is everywhere, especially when the home improvement, home bedroom, living room, dining room, what should buy what kind of light? This problem stumped a lot of people, but in fact, there is a lot of stress to buy lamps. Today, I would arrange to buy under the light of knowledge, interested friends can not miss.
Many people are aware of this several lights, also known energy-saving effect followed by LED lamps, energy saving lamps, incandescent lamps. But one of the principle must not everyone understood.
Ordinary incandescent light efficiency of about 10 lumens per watt, life is about 1000 hours, it works is this: When the lamp access circuit, current flows through the thermal effect of filament current, so incandescent lamp emits a continuous visible and infrared, this phenomenon can perceive the filament temperature rose to 700K, due to the high filament temperature at work, most of the energy in the form of infrared radiation wasted, due to the high filament temperature, evaporating quickly, so life expectancy large shortened, approximately 1000 hours; on energy saving point of view, because a large number of traditional incandescent infrared energy loss and high-temperature fever, life is short, advanced energy saving lamps are an inevitable introduction of energy-saving revolution .
Q: LED energy saving lamp why more energy than incandescent
In contrast, the energy saving lamps mainly through ballast to the lamp filament is heated, about the time the temperature 1160K, the filament began to emit electrons (because the filament coated with some electronic powder), argon atoms produced by electron impact inelastic collision, argon atoms after the collision energy also get hit mercury atoms, mercury atoms absorb energy transition after ionization, issued 253.7nm UV, ultraviolet light-emitting phosphors excited, because the fluorescent work filament temperature around 1160K, than incandescent working temperature 2200K-2700K is much lower, so it's great to improve life expectancy, but also to engage in energy-saving extent, life up to 5000 hours, because it does not exist as an energy conversion efficiency of incandescent current thermal effects, the phosphor is also very high, reaching more than 50 lumens per watt.
LED (Light-Emitting-Diode Chinese meaning light-emitting diode) is a way to convert electrical energy into visible light semiconductor, it changed the incandescent tungsten light and energy saving lamp luminous three-color dye, while the use of electric light. Because led the use of solid semiconductor chip as luminescent materials, and we are in daily life is the use of metal used to make the bulb light-emitting materials, energy and therefore the issue is different, according to the statistics, a red LED light reaches a certain brightness the energy consumption required for 15 watts, while the traditional light bulb to achieve the same measure will have to consume up to 150 watts of energy; in addition, according to the scientists determined, when powered LED light, 10% of the energy can be converted into energy, and conversion efficiency of incandescent bulbs only 7-8%, Thus, to achieve the same lighting effects, LED energy than incandescent lamps is obvious the.
According to the analysis, LED very obvious characteristics, long life, high luminous efficiency, no radiation and low power consumption. LED spectrum almost all concentrated in the visible light spectrum, the luminous efficiency of more than 150lm / W (2010 ?). The LED with ordinary incandescent lamp, spiral energy-saving lamps and T5 fluorescent trichromatic comparison, the results show: ordinary incandescent light efficiency of 12lm / W, life less than 2000 hours, the luminous efficiency of spiral CFLs 60lm / W, life expectancy is less than 8000 hours, T5 fluorescent lamps compared to 96lm / W, life of about 10,000 hours, while the diameter of 5 mm white LED luminous efficiency can be more than 150lm / W, life can be more than 100,000 hours. It was also predicted that the future of LED lifetime limit will be infinite, and will also dominate the market.
