Wuhan University: "low-carbon economy" of getting better
A diameter of 20 cm "glass" at the sun's energy is gathered under a few seconds you can light a cigarette. This is a College of Chemistry and Molecular Sciences, Professor Liu Lijian demo scene.
Professor Liu Lijian said that this is actually a polymer condenser plate, in theory, sunlight intensity can be increased in recent times, the gathering of solar energy to generate temperatures above 600 ℃. His research group is using this condenser plates in the solar energy into chemical energy of the "low carbon" technology research.
"Low-carbon economy" is a hot topic in the Copenhagen Climate Conference, Prior to this, the first time the Chinese government publicly committed to quantified emissions reduction targets the world, decided to unit of GDP by 2020, greenhouse gas emissions below 2005 levels by 40% - 45%.
"Low-carbon economy" is that fossil fuels such as coal, oil, etc. to use as much as possible the use of biomass energy, wind energy, solar energy. "Low-carbon economy" rely on technology to ensure the realization. Reporters learned that, in Wuhan University, active in a group engaged in "low carbon" technology experts and scholars, they use biomass, wind, solar and other aspects of the research has been getting better, in the promotion of high-carbon to the "low carbon" , "zero carbon" research firm on the road forward.
Since 2003, Liu Jian group trying to gather the energy of sunlight to carbon dioxide and biomass such as straw, the reaction of carbon monoxide, a move not only the direct use of solar energy to biomass into carbon monoxide gas, but also by the carbon dioxide into carbon monoxide The process of solar energy into chemical energy, in order to achieve carbon dioxide recycling, save energy, increase energy, emission reduction and environmental protection in multi-effects. The simulation process has been completed a small trial is underway to expand testing.
Liu Jian, China's only straw produced annually about 11 million tons, all of them using only the equivalent of less than 4 million tons of carbon, can not meet the huge demand for social and economic development. To this end, his group still try to gather direct sunlight to make carbon dioxide into carbon monoxide, not only to energy conservation, is also expected from the "low carbon" to "zero carbon."
National New Century Talents Project selected candidates, Wuhan University, School of Physics, Professor Zhao Xingzhong the group is committed to solar cell research, some of the technology has been close to the world advanced level.
New solar energy as a renewable energy, is considered the most important new 21st century energy sources. The semiconductor material silicon solar cells, represented the first flourish. But its production process complexity and higher cost. In recent years, scientists from various countries have been working on developing some low-cost, highly efficient new solar cells. Low-cost dye-sensitized solar cells in recent years scientists have studied the hot spots.
Professor Zhao Xingzhong the auspices of "dye-sensitized solar cells," study abroad unique. Beginning in 2006, the group hosted 863 projects "solid polymer electrolyte modified nanocrystalline dye-sensitized solar cells", by ultrasonic irradiation, nano-particles doping techniques, aimed at modified solid-state electrolyte. Dyes excited by the sunlight, the photo-electron injection TiO2 porous film, transferred to the external circuit through the TiO2 can directly convert solar energy into electricity. Dye-sensitized solar cell production process does not produce carbon dioxide, does not produce environmental pollution. Unlike traditional semiconductor silicon solar cells, dye-sensitized solar cell silicon cell costs only 1 / 5.
Wind power generation is to promote the use of wind generators. Wind energy resource is clean, renewable energy, inexhaustible, is the permanent presence of local resources. However, the establishment of wind farms need to address the stability is not enough, and wind power reserves and transportation and other technical issues.
The school of Electrical Engineering focused wind and solar power, is leading in the "large-scale long-distance transmission of wind power," to explore the subject, the study targeted wind power planning, wind power access, and other technical aspects of wind power reserve. At present, Henan, Gansu and other places connected to the grid for wind power research for China's wind power access and long-distance transport to tackle technical problems.
Smart Grid is a research hotspot in recent years, the experts. U.S. President Barack Obama's energy plan after taking office, including the development of smart grid industry, to maximize the value of the U.S. National Grid and efficiency, creating the world's highest energy efficiency. In recent years, Electrical Engineering, a group of experts to join the smart grid research, network security, lightning protection and grounding, power quality, grid stability and other aspects of leading the country.
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