Metro Cars try LED green lighting

Led green lighting shine Beijing Olympic Games, Shanghai in World Expo, quietly entered the Beijing subway car. Reporters learned from the subway operating company, No. 1 line of G432 air conditioning train, there are two carriages switched to LED lights, next week will complete the entire train lighting transformation.

Expert estimates, although the LED lamp is expensive, equivalent to 50 times the common fluorescent lamp, a train the total cost up to 50 thousand yuan, but the savings in electricity and maintenance costs nearly three years to recover the cost, it is expected to promote large-scale subway in Beijing.

LED also known as semiconductor lighting, is a new generation of lighting technology is different from the ordinary energy-saving lamps. G432 trains are being tested, the car will be replaced by 168 fluorescent lights LED lights. Relative to the price of five or six yuan per fluorescent lamp, the new replacement LED lighting market price up to more than 300 yuan. The current pilot project is a national 863 science and technology content, temporarily provided free of charge by the manufacturers.

Usually, theory of life common fluorescent lamp is 6000 hours per day on average, according to a subway train running 12 hours, for 500 days. But in fact, the train continued to vibrate and the current instability of the special environment, so that the car in the tube often change often bad". Almost every year for three or four years to change the lamp, plus the labor costs of night maintenance, the whole train costs nearly $10000 a year. "Ancient city vehicle segment staff revealed.

The outstanding advantages of replacing LED lamp is to extend the service life and greatly reduce energy consumption. G432 trains are being replaced by these LED lights, the service life of at least 30 thousand hours, the characteristics of strong earthquake resistance is very suitable for subway operating environment, no change in six or seven years. At the same time, LED lamp energy efficiency than ordinary fluorescent lamp nearly 50%.

Reporter learned that Metro Power ordinary lamp is 40 watts, and the new LED lamp is only 18 watts, the actual power lighting process can save almost 18 watts. To 160 units per train, the average daily operation of the calculation of the average of 12 hours a day, LED lighting can save electricity by 12 thousand and 600 degrees, saving electricity costs $eight thousand or nine thousand. Overall, the whole train after the transformation, save electricity and maintenance costs, almost three years will be able to recover the cost of $50 thousand LED lamps. Introduction of LED project leader of Beijing Metro Design institute.

At present, the Beijing subway operation of the train as many as 1000 columns, if all the transformation of LED lighting, environmental benefits are very impressive, but the cost of renovation of about 50000000 yuan is also a big investment. According to reports, the city will be based on the test results of the G432 train, the decision whether the LED lighting in subway cars and stations to promote a large area. Insiders suggested that the subway LED lighting can be implemented in the first line of rail transportation, because the train procurement stage on the provisions of the use of LED lamps, the cost will be much lower than the latter transformation. RJ033

News background

LED lighting technology originated in the last century at the end of 60s, the core component is a light emitting diode, because there is no heat loss than the traditional incandescent lamp, fluorescent lamp luminous efficiency is much higher. At present, the advantages of high energy saving, long life and material recycling of LED lamps are generally accepted. In the developed countries of Europe and the United States, it is replacing the ordinary energy-saving lamps as the new trend of indoor lighting. In China, the application of LED landscape lighting, screen display and other fields has been relatively mature, but also into the ordinary families are subject to high price constraints, it will be in the field of outdoor lighting and public buildings.