Our existing building nearly 400 million square meters, of which 95% are not energy-efficient buildings, over 130 million square meters of energy saving is required. At present, China's energy consumption accounted for 40 per cent of the total energy consumption, all kinds of energy consumption in the country.
In the recently held in Qingdao 2008 first China International cyclic economy results trading Expo, solar building integration, low cost and high insulation of energy-saving doors and Windows, building heating, and a number of building energy-saving areas; new technology showcase for China's future building energy efficiency provides development direction, and has broad application prospects.
Solar building integration into the new trend of the future building energy saving
With the energy and environmental problems of an increasingly grim, the increasingly widespread use of solar energy. Journalists at the first China International cyclic economy Expo interview results transactions found that set lighting, power supply, etc functions as one of the solar building integration, become the new trend of energy efficiency in buildings.
In the exposition, a stand in the showroom of facilities in energy saving House, attract many visitors. In the floor, Cascade-like unfolded solar panel, solar power continuously transformed into electrical energy, for indoor lighting, electrical appliances and kitchen use.
It is understood that the solar energy conversion device of principle is: during the day, the Sun in the solar cell components, light energy is converted into electrical energy solar cell components, through the controller is stored in batteries. Day color gradually darkens, solar cell components operating voltage and current are declining, when the voltage is reduced to the minimum protection voltage of battery, the controller is shut off charging circuit, stop charging, closed discharge circuits, battery power to the light source, lighting.
At the fair, several domestic and foreign companies launched several sets of solar building integration design, become a major attraction of the show. According to experts, this solar PV system generally applies to residential buildings, squares, roads, lighting, usually installed on the top and lateral buildings, in order to maximize the absorption of the Sun, while saving space, and energy conservation.
Currently, there are enterprises in Shandong province has introduced a complete set of international advanced automatic production lines for solar cell encapsulation and testing equipment, instruments, weapons of mass, automated production of 160 watts the following various power monocrystalline, polycrystalline cell components, annual capacity of 5 MW, equivalent to 10 small hydroelectric power stations.
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