At present, the world's thinnest, strongest, and most conductive nano-materials have begun to be used by civilians.
In Beijing, street lights on both sides of the road are being "embedded" into a black technology. The author recently learned from the Mechanical and Electrical Engineering Department of Beijing Zhengluqiao Municipal Group that in the ongoing street lighting upgrade project on Chaoyang North Road and other roads, graphene will be used for the first time as a new lighting material, and this independent technology comes from Zhongguancun. Graphene street lamps can save 20% to 30% energy compared to previous LED street lights.
The deputy center took the lead in early adoptingGraphene, known as "black gold" and "king of new materials", is considered to be the thinnest, strongest, most conductive and thermally conductive nanomaterial discovered by mankind, and the most promising material in the future. one. And what role does graphene play on the street lamps on both sides of the Beijing city road?
"The black-grey composite material can be seen from the appearance, but in fact, a large amount of graphene is used on the thermal conductive adhesive and the chip." The person in charge of the electromechanical engineering department of the Beijing Municipal Government Road Group, which is responsible for the construction of the project, said.
In fact, graphene is applied to a "high-power LED module." In the production process of “graphene heat-dissipating high-power LED moduleâ€, graphene composite materials are applied to chip heat conduction, heat flow density dilution and infrared radiation enhancement.
The street lighting module using this new material and new technology can directly replace the sodium lamp tube without replacing the lamp housing, which is twice as efficient as before.
It is reported that the street lamps filled with new graphene materials will be the first to appear in 28 roads in Tongzhou District, such as Chaoyang North Road. Currently, they are under construction and are expected to be completed in the near future.
The luminous efficacy of the “graphene streetlights†on both sides of the 28 roads is 140 lumens per watt, while the current mainstream is only 110 lumens per watt. The digital gap is actually a technological breakthrough. Such a high-efficiency "graphene street lamp" is also the first mass production in the world.
In fact, this technology comes from Zhongguancun. "This independent research and development technology is a unique one, this time realized the 'Beijing use' of 'Beijing technology'." Chen Wei, the founder of Zhongguancun High-tech Enterprise Minghao Technology, chose to stay in Beijing after he graduated from Beijing Polytechnic. The eyes turned to "graphene lighting."
Although “graphene†is hot, it is mainly hot in production, but there are few people in the industry, because it is difficult to bear. Chen Wei said that the independent technology of graphene lighting has been a sword for five years. After the final development, the technology was immediately included in the recommended list of energy-saving and low-carbon new technologies jointly released by the Municipal Development and Reform Commission and other departments; this year's China (Beijing-Tianjin-Hebei) International Graphite Rare Innovation and Entrepreneurship Competition, the project Also won the first prize.
Take the “graphene street lamp†on the 28 roads in Tongzhou as an example. The most critical material is thermal conductive rubber. “The thermal conductive adhesive should integrate graphene into the colloid and become a composite material to achieve its good thermal conductivity. Features, this is also the most difficult technical problem."
"Black gold" lighting energy saving two or three percentThe bright spot of graphene is energy saving. "The heat is controlled, and the light efficiency is improved." Chen Wei calculated the account for the reporter. Because graphene has better performance in heat conduction, it saves a lot of heat dissipation area compared with ordinary LED lamps, so it is better than LED. The lamp can save 20% to 30% energy; if compared to ordinary sodium lamps, it can save 70% energy.
In this way, based on the same amount of electricity, the brightness of graphene street lamps will be higher, and this benefit can also benefit drivers driving on the road. Ordinary LED lights almost have the problem of "black under the lamp", the periphery is bright, but the street lamp is black and black; and the graphene street lamp can basically avoid the light and dark interlacing on the road due to the change in brightness and light distribution. "Zebra line effect."
In addition, in terms of appearance, these street lamps can free up more places to be placed on the versatility due to the reduced heat dissipation area. It is understood that the graphene street lamps on the 28 roads in Tongzhou, together with the surrounding urban landscape, have adopted eight or nine shapes such as sails.
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