In the latest “2050 Energy Development Roadmap†released in the third quarter of 2010, the EU clearly stated that under optimistic conditions, renewable energy will account for more than 80% of total energy in 2050, and solar energy will become the largest part of renewable energy. It accounts for about 19% of the total energy composition. Even with conservative estimates, PV still has to account for 12%.
With conservative estimates, the above plan will be achieved in 2050, but optimistic expects to achieve the above plan in 2020. Recently, the EU's plan is moving in an optimistic direction. In order to achieve the above objectives, it is estimated that the cumulative installed capacity of photovoltaics in Europe will reach 400GW in 2020, of which the cumulative installed capacity in the United States will probably reach 350GW, and the cumulative installed capacity of photovoltaics in the world will probably reach about 1000GW. The annual compound growth rate is expected to exceed 56%. Even if it is expected to be realized in 2050, it is estimated that the cumulative installed capacity in the world will reach 200GW in 2020, and the annual compound growth rate will be around 35%.
The Kyoto Protocol is the main driver of renewable energy development worldwide. In February 2005, the Kyoto Protocol came into effect, and the European Union, Japan, and Western developed countries such as the United States and Australia, which have not signed agreements, have introduced renewable energy development plans. Countries have further increased the procurement of solar power systems, which has brought about a boom in the international solar market.
Folding knife, a kind of knife, can be folded. The folding knife is mainly connected with a knife body which can be rotated into by a pivot assembly at the front end of the handle. The knife body is provided with a safety buckle relative to the side of the knife body, and an elastic strip relative to the back end of the knife body. The back end of the knife body is provided with a stop part and a stop concave part which can be butted by the elastic strip, and the safety buckle has a tilted elastic buckle part, The elastic strip is arranged in the holding chamber of the handle, one end of which is fixed, and the other end of which is connected with the stop part of the tool body, so as to provide the thrust to assist the rotation of the handle when the tool body is rotated out of the handle, In addition to the simple semi-automatic operation mode of turning out and positioning by using the elastic auxiliary push knife body, the overall thickness of the folding knife is reduced by the refined and simplified structural design, which is convenient for the collection and carrying of the folding knife and makes the operation of the folding knife easier.
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