The evening of October 21, 1879, Edison and aides into carbon filament Bulbs, which invented the light bulb.
On November 4, 2011, national development and Reform Commission and other departments announce the phasing out of incandescent lamps by power size roadmap, this ancient light coming out of people's vision.
Rising star other than the incandescent lamp: energy-saving fluorescent lamps and LED lamps
Humans used incandescent lamps have a history of more than a century, however, this light can only convert the energy of light 10%, and 90% into a useless energy.
When working in the incandescent lamp, bulb temperatures of up to a maximum of 100 ℃ or so. This low efficiency have spent a lot of energy, November 4, departments such as development and Reform Commission announced phasing out incandescent lamp by power size of the road map and decided as of October 1, 2012, prohibit the import and sale of more than 100 watt incandescent lamps for general lighting.
Shenyang huaguang lighting electric appliance limited company engineers described Liu Changxin, wants to eliminate incandescent lamp, because there are now more energy efficient lamps.
"Fluorescent lamps are incandescent light source of the second generation after that utilizes gas discharge inside gas energized to be light, efficiency compared with incandescent lamps have been Significantly improved, efficiency close to 40%, the heat produced by the same brightness of incandescent one-sixth. So many places, especially the summer Mall, which does not produce too much heat and save electricity. ”
In the examination room, there is a light metal base, half the bulbs by metal package and the other half is a milky shade.
Liu Changxin said: "this is the led energy-saving lamps, is the most advanced light source. When electric current through a wire on the Chip when electron will be issued in the form of Photonic energy, this is the principle of LED light. In theory, efficiency of LED energy-saving lamps can be 100%, but with current technology, more than efficiency in 45% of electrical energy into light. ”
Was a 40-watt LED energy-saving incandescent lamp luminous flux is approximately 5 times times
Shenyang huaguang lighting electric appliance limited company, Liu Changxin comparison in accordance with the programme on energy-saving incandescent, fluorescent and LED lights have been tested comparison.
Test Equipment consists of three parts, two metre diameter integrating sphere, sensors, and computer-Spectra analysis system.
Integrating sphere open, light-and-drop goal, energized to close the integrating sphere. Barium sulfate coating for inner wall of the integrating sphere with white, you can in a confined space, the light reflection to the sensor, sensor spectral analysis system to PC connections, system analyses of indicators of the light source.
With 40 watts of incandescent, fluorescent and energy-saving lamp luminous flux LED comparisons.
Incandescent lamp: 367 lumens. Fluorescent lamps: 2,721 lumens. LED energy-saving lamps: 3,498 lumens.
Liu Changxin introduction: "popular terms, how much luminous flux per unit of time is making the amount of light, its unit called lumens, issued 100 lumens is equivalent to 15 watt incandescent light. ”
Can be seen from the test, in the case of power of 40 watts, energy-saving fluorescent lamps and LED light emitted far more light than incandescent lamps, LED energy-saving incandescent lamp luminous flux is nearly 5 times.
Incandescent lamp life is approximately 1000 hours, energy-saving lamp life of 50,000 hours LED to 60,000 hours
Computer analysis system, set the luminous flux of 2,600 lumens, in accordance with the data analysis, to place a light, you need power of 200 watts of incandescent, fluorescent lamp power of 40 watts, power 26 watts of energy-saving LED lights.
Liu Changxin introduction, size represents the energy of the power of the lamp. Cost 1 unit, a 200-watt lamp may point 5 hours, 40-watt lamps can be used for 25 hours, LED energy-saving lamps can be used nearly 40 hours.
Under the same conditions, to emit the same amount of light, 5 times times the energy of incandescent lamps are fluorescent lamps, about 8 times times the LED energy-saving lamps, which represent the equivalent of the latter two will save energy.
To prove this kind of data, a dark background, Liu Changxin 25 watt incandescent lamp, 7 watts of fluorescent lamps and 5 watt LED energy-saving lamp series.
Comparison shows that three would issue roughly the amount of light, 5 watt LED energy-saving lamps to be lighter than the 7 Watt fluorescent lamp.
In addition to different energy, and all three also have a lot of difference in life expectancy between.
Incandescent lamp life 1000 hours or so, fluorescent lamp life is normally between 6,000 and 10,000 hours, LED energy-saving lamp of life between 50,000 to 60,000 hours.
6 hours per day, incandescent lamps can be used for 5 months, fluorescent lamps can be used for nearly 3 years, energy-saving LED lights can be used around 23.
Old-fashioned light bulb electricity but for various voltages are able to adapt
Introduction of Li Kai, while energy-efficient LED energy-saving lamp, but due to its high cost, and therefore not yet a lot of promotion.
Can also be issued 2,600 lumens of light, 200 watt incandescent lamps of the market price of $ 2, 40-watt fluorescent lamp price at $ 4, 26-Watt energy-saving lamp price at around $ 200.
Despite the difference in cost, from the saved electricity and a long service life, price/performance is the highest of the fluorescent lamp, LED energy-saving lamp price is still too expensive.
Introduction of Li Kai, from an environmental perspective, the incandescent lamp produces heat when used, there is also heavy metals such as tungsten. Fluorescent lamps with mercury, feel free to discard contaminated soil and rivers. LED green energy-saving lamps, does not contain heavy metals such as lead, mercury, and no pollution to the environment.
Price is rather expensive for energy-saving LED lights on, Li Kai said: "as technology improves and universal, energy-saving LED lights cost will gradually decline, to go into your home. ”
Has been used for more than a century, the incandescent lamp with its own advantages: superior ability to adapt.
Standing member of China Association of lighting Li Kai says: "incandescent low cost structure is relatively simple, and able to adapt to a wide variety of environments, not only the voltage is 220 volts, even 100 Volt voltage, incandescent lamps are lit up, more than 220 volt voltage, incandescent lamp will light. ”
On adaptability is also reflected in the voice-activated lights incandescent lamps, many communities in the corridor is to install it. "Voice-activated currents of the lamp constantly disconnected if it is fluorescent, constantly disconnected can often damage internal components, and the cost of LED energy-saving lamps is too high, incandescent just enough to adapt to this environment. "Li Kai describes, in many workshops and the majority of rural areas, due to the low cost and highly adaptable, incandescent lamps are still widely used.
Incandescent lamps have a high color rendering index. "Incandescent color-rendering index of up to 100%, that is, its exposure color does not change, and energy-saving fluorescent and LED lights at around 80%.
