Wind is a promising new energy source, dating back to the early 18th century
A fierce gale swept across England and France, destroying 400 wind mills, 800 houses, 100 churches, and over 400 sailboats. Thousands of people were injured and 250000 large trees were uprooted. As for the matter of uprooting trees alone, the wind emitted a power of 10 million horsepower (i.e. 7.5 million kilowatts; one horsepower equals 0.75 kilowatts) in just a few seconds! Some people have estimated that the wind resources available for power generation on Earth are about 10 billion kilowatts, almost 10 times the current world’s hydroelectric power generation. At present, the energy obtained from burning coal worldwide every year is only one-third of the energy provided by wind power within a year. Therefore, both domestically and internationally attach great importance to utilizing wind power for power generation and developing new energy sources.
The attempt to use wind power generation began as early as the early 20th century. In the 1930s, Denmark, Sweden, the Soviet Union, and the United States applied rotor technology from the aviation industry to successfully develop some small wind power plants. This kind of small wind turbine is widely used in windy islands and remote villages, and its power cost is much lower than the Cost of electricity by source of small internal combustion engines. However, the electricity generation at that time was relatively low, mostly below 5 kilowatts.
We have produced 15, 40, 45100225 kilowatts of wind turbines. In January 1978, the United States built a 200 kilowatt wind turbine in Clayton, New Mexico, with a blade diameter of 38 meters and enough power to generate electricity for 60 households. In the early summer of 1978, the wind power generation device put into operation on the west coast of Jutland, Denmark, generated 2000 kilowatts of electricity. The windmill was 57 meters high. 75% of the generated electricity was sent to the power grid, and the rest was supplied to a nearby school.
In the first half of 1979, the United States built the world’s largest wind mill for power generation on the Blue Ridge Mountains in North Carolina. This windmill is ten stories tall, and the diameter of its steel blades is 60 meters; The blades are installed on a tower shaped building, so the windmill can rotate freely and receive electricity from any direction; When the wind speed is above 38 kilometers per hour, the power generation capacity can also reach 2000 kilowatts. Due to the average wind speed of only 29 kilometers per hour in this hilly area, the windmill cannot fully move. It is estimated that even if it operates only half of the year round, it can meet 1% to 2% of the electricity needs of seven counties in North Carolina
Post time: Jul-06-2023
