China's wind power mitigation of Electrical Scarcity

wind GeneratorsThe 21st century is the century of renewable energy, wind energy as a very rich and very cheap prices, energy will not be depleted, but also to a large extent made, very clean, no pollution, the climate will not affect the present, no An energy are there so many times after the priority role to play center. Wind power is the world's fastest growing energy, in the past 10 years, the world's wind power plant to an annual 30 percent growth rate in the development. By the beginning of 2003, the global wind turbine capacity of 32 million kilowatts, equivalent to 32 standard nuclear power plant.



The potential of wind power a long time, people to people higher than the price of wind power, citing electricity, wind power has been overlooked as a clean energy and energy shortages and environmental protection for the significance of neglect of wind power as a huge high-tech industry Prospects, but also neglected to promote economic development in remote areas can bring about the great role. When the power shortage. Energy shortage and access to the testator, China should re-recognize the use of wind energy.



First, rapid decline in price of wind power. Have been increasingly close to coal-fired power generation into wood, economic highlights, and wind power generation capacity each doubled, the cost fell 15 percent in recent years the growth of wind power has remained at 30 percent. Currently, China's wind power costs about 05 yuan more than that with China's wind power installed capacity of power generation and localization of the scale, wind power is expected再降into wood. In addition, the external costs of wind power almost zero, or even lower than the cost of nuclear power. According to preliminary calculations, if the cost of internal and external costs of people at the same time costs, wind power is currently the world's economy, the most clean source of energy.



The second is very rich wind power resources. According to preliminary statistics, China's land 10 meters and 15 meters off for the development of wind power resources in the above-100 million kilowatts, equivalent to the development of hydropower resources (390 million kilowatts) of 2.5 times. The 50-metre wind resources will be increased twice. According to existing technologies, ground 50-100 metres of wind resources can be developed and utilized. In 2003, China's power generation capacity of 385 million kilowatts, experts believe that China will be able to rely on wind power generation will double the existing power production.



Third, wind generators  technology daily mature. With the development of science and technology, wind power technology has been quite mature. More large-scale, better performance of the unit who have been developed for the production and test run, can make use of the wind speed will also reduce demand.



Four construction period is short, quick. Thermal power, water and electricity needs of the construction period, to calculate, and in a wind field data under the premise of wind power projects only need to Zhou. , To calculate. Wind building in a short period of time to complete, can solve the power shortage for the immediate need.



The fifth is to contain the development of the greenhouse effect. According to statistics, the production of wind power per 1 million kwh of electricity, will be able to reduce the emission of 600 tons of carbon dioxide, and vigorously develop wind energy can greatly reduce the greenhouse effect of carbon dioxide mitigation of climate warming conditions, can effectively contain dust storm disasters And inhibit the development of desertification.



Six independent power supply in remote rural areas. "Unit, the power grid and high-voltage" model can not effectively solve the dispersion of the western region of the demand for electricity. Development of wind power generation such a decentralized power supply system that can better meet the development of these areas of energy demand, China is not on the grid of wind power generation in rural areas is a huge market.



7 wind generator field is also a tourism project. Wind farm can lead local economic development, such as wind farm in Inner Mongolia although little, but very spectacular scenes, has developed into a tourist area.



The development of wind power delay



In the current energy shortage as a backdrop, the development of wind power of great significance, however, China's wind power development compared with other countries lagging far behind.



Today, Europe's wind turbine  Sijing able to meet 40 million people living needs. European Wind Energy Association in 2020 is expected to nearly 200 million people in Europe will be entirely the use of wind power, accounting for half of the Europeans. In 2003, Germany's wind power equipment industry has replaced the automobile manufacturing and shipbuilding, to become Germany's largest steel user, Germany has recently developed a new long-term plan for the development of wind power, set to at least 2025 for wind power Total volume of 25 percent, to 2050 of the total amount of 50%. Denmark has been successfully using wind power to meet the old percent of the domestic demand for electricity in the past has been advocating the use of nuclear energy in France, also began to formulate a long-term plan to develop wind power.



Wind power generation in some Asian countries has also made rapid development. In 2002, India's wind power installed capacity has reached 1.7 million kilowatts, the country is looking for more than three times as the world's No. 5 producer of wind power. In recent years, the Indian Government to actively promote the development of wind power industry, encourage large private and public enterprise investment and incentive policies to fan the manufacturing industry, currently India's wind power unit parts have been achieving 70 per cent of domestic and greatly reduce the cost of production.



To the end of 2003, China's total installed capacity of wind farm only 567,000 kilowatts, of the nation's total installed capacity of 0.15 per cent, has built 40 wind farms, less than the average capacity of 150,000 kilowatts, far from being a scale. According to our government's latest wind power development goals, to the 2020 National wind power installed capacity to reach 20 million kilowatts, wind power will account for 2% of all electricity. Some experts believe that China's wind power, if the annual rate of 30 percent, to 2020 accounted for 10% of all electricity is also feasible.



Existence of obstacles to the development of wind power



First, the existence of policy obstacles: First, the lack of wind power development objectives and implementation of the strategic planning and the other is the lack of an effective economic incentive policies and strong institutional safeguards third is the lack of fan encourage domestic policies and measures is the lack of an effective 40 The investment and financing system; five companies are China's power grid monopoly strong, the lack of government under the guidance of wind power procurement policy, private enterprises to invest in the "wind power the Internet," there are still structural barriers; six is the lack of strong advocacy, public To be inadequate understanding of renewable resources.



Many countries in the world more aware of the importance of wind energy development, policy and regulations are promulgated a corresponding regulations. Germany enacted a new energy law, the Government to wind power to 9.1 euro cents per kilowatt-hour of subsidies, subsidies for at least five years, since January 1, 2002, decreasing 15 percent every year, even if the high rate subsidies expire, Wind power investors can still enjoy 6.19 euro cents per kilowatt-hour of subsidies.



Secondly, there were technical obstacles: First, China is still no comprehensive monitoring of the wind resource analysis report, large-scale commercial wind power lack of scientific wind feasibility study to assess the support and the other is wind power generation resources during more concentrated, there Wind Power The instability of the impact of the power grid, the huge gap between peak and valley to solve the power problem or third is China's wind resources are mainly concentrated in Inner Mongolia, northwestern region, and coastal areas, the existence of wind power and the grid connection and storage problems, large number of wind Xinhua transmitted to the demand for electricity enterprises are facing difficulties in the four monsoon climate is the existence of wind power on the impact of China's five is a relatively low level of fan equipment manufacturers, Sijing into the international mainstream models of megawatt-class units in China is still in the development stage, the large fan Can only rely on imports or production cooperation with foreign investors.



At present, Denmark, Germany's wind generators capacity in the proportion of power grids can do more than 30 percent, while China's power grid is relatively weak, the local power grid wind power in the proportion of the general control of 12 percent, still a power grids in some areas The collapse of the accident, carried out in wind power and the power grid linking research at the same time it should strengthen the construction of power grids in China. If the wind power accounted for more than 10 percent of the electricity needed to further consider the issue of energy storage solution. With the development of technology, the monsoon on the impact of wind power will become increasingly smaller. China's top priority must be to increase research and development for technical people, vigorously developing wind power talent.

From:http://www.allwindenergy.com/hummer/post/22.htm

About China Die Casting

Modeling is based on making core casting process requirements in determining a good method of modeling, ready to shape the material basis. Casting the accuracy of all of the production process and the economic effects will depend mainly on this procedure. In many modern casting workshop, modeling-made batteries have achieved a mechanized or automated. Sand commonly used form core-making equipment is high, medium and low pressure molding machine and threw sand machine, without me radio pressure molding machine, radio-core, cold and hot-box machines.

Since the casting mold in cooling pouring out after a gate, riser and metal spikes Phi slit, sand casting of the casting also adhesion of the sand, it must be clean-up process. Such devices are the work of the Blasting machine, gate riser cutting machines. Sand-casting sand clean-up is a poor working conditions processes, in the choice of modeling methods, should be taken into account for as much as possible with sand to create convenient conditions for clean-up. Casting a result of some special requirements, but also by casting post-processing, such as heat treatment, plastic surgery, anti-rust treatment, such as rough.

Casting is more economic methods of rough shape, the shape of more complex components demonstrated its economy. aluminum die casting Such as car engine block and cylinder head, ship propellers and exquisite works of art, and so on. Cutting some of the difficult parts, such as the combustion turbine parts do not have to nickel-based alloys casting method can not be forming.

In addition, the die casting of parts of the size and weight to a wide range of metal types of almost unlimited; parts in a general mechanical properties, it is also a wear and corrosion-resistant, shock-absorbing properties, and so is the other metal forming methods such as forging , Rolling, welding, salt, and so can not. Therefore, in casting machine manufacturing methods used in the production of rough parts, and the number is still on the tonnage is the largest.

Casting often use a variety of metal materials, coke, wood, plastic, gas and liquid fuels, such as modeling materials. Have the necessary equipment used in various metal smelting furnace, a Mixer with the various Mixer, a shape-made batteries used in various molding machine, machine-made batteries, cleaning up the castings used for loading sand, Shot Blasting Machine And so on. Casting is also available for special machinery and equipment, and many transportation and material handling equipment.

Casting and other technology have different characteristics, mainly wide adaptability, needed materials and equipment, pollution of the environment. Casting will have dust and harmful gases and noise pollution to the environment, compared to other machinery manufacturing processes to become more serious, need to take measures to control.

Casting product development requirements of the trend is casting a better overall performance, higher accuracy and less headroom and clean the surface. In addition, the requirements of energy-saving society and restore the natural environment of the call also getting higher and higher. To meet these requirements, the new cast alloy will be developed, the new smelting technology and new equipment will be corresponding.

Casting the mechanized production continuously improve the degree of automation in the same time, to be more flexible production development, to expand the volume and variety of different production adaptability. Conserve energy and raw materials of new technologies will be giving priority to the development, have little or no pollution of the new equipment, new technology will be the first attention. Quality control technology in all stages of testing and nondestructive testing, stress determination, there will be a new development

From:http://www.nbdiecasting.com/blog/