Experiment: LED lamp PK energy-saving lamp price ratio is quite?

According to Information Times reported that, at present, incandescent lamps are facing a phase out of the situation, energy-saving lamps, LED lights become the mainstream market. However, because the price is relatively cheap incandescent, some people still feel that the use of incandescent higher cost. Some people also believe that energy-saving lamps high cost, there are people who think that the high price of LED lights. So incandescent lamp, energy saving lamp, LED lamp who is the most cost-effective? Our laboratory will tell you the answer through the experiment.

Survey articles: energy-saving lamps and LED lamps supporters almost

Before the start of the experiment, the reporter conducted a survey visit to see the eyes of the people in the incandescent lamp, energy-saving lamps, LED lamps who the highest price. Lee said the grandmother, I still use the incandescent lamp, because it is cheap. He said, "I think the effect is certainly better, brightness LED lamp, but the power, I think it is not too much and the LED lamp, but the purchase price on the LED lamp but also expensive, so considering the possible energy saving lights better. "

Mr. Zhang said, must be LED lights. Now LED lights is the trend, my home is the installation of LED lights, businesses in the sale of time also said that this is more energy-efficient, and more bright. I used to feel good, so I think this should be the highest cost. "

Some interviews down, energy-saving lamps and LED lamps supporters almost. So is it the same as the public? Only from the experimental results to find the answer.

Experiment: LED lights in brightness and power to better

Experimental instruments: table lamp, clamp ammeters, tape, ST series of illuminance meter, incandescent lamp, energy-saving lamps, LED lamps etc.

Experiment location: Nanchang Aviation University Physics Experiment Center

Experimental personnel: Nanchang Aviation University Physics Experiment Center Zhu Quanshui

(Note: the results of this experiment are only responsible for this experiment)

Reporters bought 3 models on the market to carry out experiments, respectively, 40W incandescent lamp, 10W energy-saving lamps, 5W LED lights, the price was $2, 10 yuan, $15.

"Although the lights are marked by power, but this data is not an actual lamp power, so in the experiment, I will go to a" good brothers "-- on ammeter to help, use it to measure the actual current of the lamp, and through the actual power calculation of light. "Before the start of the experiment, the staff said:" people in the choice of lamps often will also take into account the brightness problem, so in this experiment I will ask another "good brothers" -- to help gauge illumination, brightness is used to test three lights. "

Words alone are no proof. evidence. The first appearance is incandescent lamp, incandescent lamp experiments will be installed to a table prepared in advance, the lamp after opening on ammeter current data measured for 0.166A. The researchers said that in order to obtain accurate and fair data, the uniform experimental standards, whether it is to test which lights, the sensor center will be placed in the center of the illuminance meter 30 cm. Finally, the illumination of the incandescent lamp is 1.03Klx.

After the replacement of energy-saving lamps, the researchers measured the current of 0.037A, illumination of 0.44Klx. When replaced with LED lights, the measured LED lamp current generated by 0.032A, illumination of 1.07Klx.

According to the experimental results, we can see a huge gap in brightness, brightness LED lamp with energy-saving lamps more than two times higher than incandescent lamps become the champion, ranked second, close to the 0.04Klx gap with the title, energy-saving lamp bottom.

Because the experiment is measured by the current, the current is not the final data, the current test is to calculate the cost of electricity when the lamp. Through the calculation of the experiment, it can be concluded that the incandescent lamp consumes 0.03652 kwh of electricity per hour; the energy saving lamp consumes an electric energy of about 0.00814 degrees per hour; the LED lamp consumes about 0.00704 kwh of electricity per hour.

Interpretation of the article: energy-saving lamps and LED lamps have little difference

Ordinary family every day on 5-6 hours a day, if you press the lights 6 hours, 0.6 yuan per kilowatt basis, according to the power consumption measured in this experiment, the reporter calculated that more than the 40W incandescent lamp to take electricity 47.98 yuan a year, the energy-saving lamp 10W a year to spend power fee of 10.69 yuan, the LED lamp 5W a year to spend 9.25 yuan electricity. Obviously, the use of incandescent lamps is the most uneconomical. LED lamps are more expensive than energy saving lamps, but they are cheaper.

Nanchang Aviation University Physics Experiment Center Zhu Quan water said, according to the national standard GB/T 9473-2008 "reading and writing desk lamp performance requirements" to the daily table lamp from the desktop 300mm meter, the minimum illumination is 250lx. According to the "interior lighting and lighting design requirements" interior decoration General 300lx ~ 750lx. If the white wall, such as a high reflection coefficient of the decorative part of the 300lx brightness can be, so from the point of view of the brightness as a source of indoor lighting or table lamp light source, incandescent lamps, energy-saving lamps and LED lamps are to meet the requirements. From the point of view of cost-effective, energy-saving lamps and LED lamps are not significant.

Experts advise students to use LED lights

Zhu also said that although the overall cost of the two is almost the same, but he also suggested that students use LED lamp lighting table lamp. The teacher explained, the incandescent lamp of the thermal effect of tungsten light, work principle and energy saving fluorescent lamp as the ultraviolet, emitted by heating the filament emission electron collisional argon atoms and mercury atoms, then UV excited phosphor. Therefore, the energy saving lamp generated by the existence of stroboscopic light