Coated glass makes the cabin cool in winter and cool in summer and saves 30%

Dou Jianguo put a piece of glass into the solar film transmittance meter.

He reminded while moving the glass, "look at the changes in the data." Sure enough, his voice just fell, and the infrared data on the meter was changed from 84% to 4%.

"Half is normal glass and half is coated with nanofilm." He explained the reasons for the change.

"Insulation is mainly made of infrared rays. Generally, the effect of glass heat insulation is not satisfactory. A film containing high-performance nano-oxide as the main raw material is coated on the surface of glass, which not only does not affect the transparency of the coating, but also has good heat insulation effect. High light transmittance."

As a business manager of the first nanotechnology company, Dou Jianguo stated the advantages of nano-coated glass. “You can keep the room cool in winter and cool in summer, 3 to 9 degrees in winter, and 3 to 9 degrees in summer.”

According to experts' estimates, the energy loss of glass windows accounts for about 50% of the energy consumption of the entire building. Can you save energy by slightly modifying old glass? In the past few years, the first nanotechnology company has developed a new energy-saving glass - low-emissivity coated glass.

“A lot of home windows have poor heat insulation of glass, and the heat exchange between indoor and outdoor is impeded, and air conditioning is often running at full capacity.” Dou Jianguo said, “This kind of energy-saving glass is coated with a layer of nanometer on the surface of ordinary glass. Materials can save about 30% energy."

3 million green subway tickets can cut down 12,000 trees

"Beijing is preparing to implement the nano green subway ticket demonstration project."

In Beijing Science and Technology Week, Dr. Xu Ting first revealed such a message.

Then he took another account. "With 3 million green subway tickets, you can cut 12,000 trees."

At present, there are 11 cities operating subways throughout the country. During the 12th Five-year Plan period, the National Development and Reform Commission newly approved 25 cities to build green rail transit. Xu Ting's view, "the traditional subway ticket, using the traditional printed circuit boards, resulting in a large number of invalid ballots each year, and serious environmental pollution."

Where he was in Kona on the company, under the Chinese Academy of Sciences and the Beijing municipal government set up the concern and support, at present, has completed the core material green printed circuit board - metal nanoparticle ink research and development, and in the printed circuit board identification card Try it out.

Using nano-green printing technology , the product complies with international RoHS standards; the material technology is green and environmentally friendly; the product recycling rate is as high as 97%. These characteristics of the nano green subway ticket, in the view of Xu Ting, "avoided the pollution of traditional craftsmanship."

He urged that such demonstrations should expand the scope. "This is a manifestation of the country's strategy for implementing a green economy."

Solar cells become flexible fibers that can be worn on the body

"Solar cells can be flexible, just like fibers."

At the entrance of the "ecological hut," Peking University's graduate students Peng Ming and Yu Wei explained to visitors coming and going.

In order to overcome the difficulties of traditional flat-panel solar cells in terms of application form and electrode cost, Professor Zou Dechun's research team of Peking University, in 2008, first proposed a flexible woven fiber solar cell without transparent electrodes.

In the past few years, the research team has expanded fiber photovoltaic technology to fiber energy storage devices and designed a new type of flexible fiber supercapacitor made of three fibers. The highest photoelectric conversion efficiency of fiber solar cells is increased to 7%.

"This flexible nanofiber-based photovoltaic cell is tubular and has a full range of photon collection capabilities." Peng Ming said, "Unlike crystal silicon and other flat-panel batteries, this battery is more portable, can be applied to smart fabrics, wear On the body, it supplies energy for flexible sensors, portable electronic devices, etc."