Tri-blade wind power may be due to: The blades
III is an angle between 120 degrees. The operation of the three-blade wind-driven generator starts with one blade parallel to the forward rotation drive. Through its effect, the driven movement becomes clear. The movement of the blades with a 60° angle in the wind direction gradually converges and the wind effect weakens. At this time, the angle of 0 degrees is from the next wind vane (that is, the angle between the wind and the next blade on the same parallel line), and the wind vane in turn continues to the next playback.
Although from the third switch of four blades, then the angle between the blades is 90°. The wind can course with one blade at a 90° angle and the next drive angle at an angle between 0°. The wind is still active on the first blade, but will also work on the second blade. If the prevailing wind is different, for example, the wind pauses, then it will cause the blade to push away from the role, and the other blade to play the role of pause. This is not conducive to wind power and is also more wear-resistant and tear-resistant means.
The two blades are discontinuous and the wind continues to blow forward, while the other blades are not so forward-moving, resulting in the power plant not being able to rotate well.
It can be concluded that among the four blades, the interaction between the blades is relatively large, which affects the results of their joint actions and reduces the efficiency. The two blades restrict each other, and the influence is more obvious and undesirable.
It can be said that in the three-blade wind power generation, there are two blades, which are derived from the action of the (good) and distance-blocking blades (and the shortcomings, then lift the blades). The shape of the wind turbine blades is not straight, but has an arc, which is advantageous in that it deflects the wind at all times, and has the side disadvantage of allowing the wind to pass through.
In this method, with high school physics knowledge, it is to convert the kinetic energy of the wind into potential energy in the blades, and convert the kinetic energy and potential energy of the blades into electrical energy in the blades, without friction. A wind is a 2 Newton wind (force 2 N/M) over three pages of a generator, one of whose blades play the role. Find how many joules of power the wind takes away from it from 0 degrees to 60 degrees...? (Should give a picture)
To think of the wind, multiply the area by the force of the blade, consider the angle, multiply the sine or cosine of the angle in this problem. Here is the role of a lever arm problem, such a simple thing to consider, either by doing the work multiplied by S (far) equals F (force), then the radius of the wind force acting on different blades at different points should be The distance traveled is different. As a result, the work done by the power potential of the wind vane moving to the blades pushed together can do this process (the work done by gravity) is the generating function
What's fun about Dongtai?
1. Generally speaking, wind turbines are fixed on the ground or houses. When the wind blows, the fan blades of the generator drive the generator rotor to rotate, so the generator can generate electricity. If you try to generate electricity by relying on the wind generated by riding an electric car, think about it.Battery, after consuming the battery's power, the wind turbine is used to generate electricity for use by electric vehicles. Wouldn't it be an extra step?
2. If the cost of solar cells can be reduced, solar cells can be considered.
The terrain of Dongtai City is relatively flat, but also slightly undulating, forming a landform that is high in the south and low in the north, and high in the east and low in the west. The highest in a few areas is 5.1 meters, the lowest is 1.4 meters, and in most areas it is between 2.6-4.6 meters. With Fangong Dike as the ridge line, two different landforms are formed on the west side of the dike and the east side of the dike. The west side of the embankment belongs to the Lixiahe Plain in northern Jiangsu, with crisscrossed river ports and intertwined lakes; the east side of the embankment belongs to the coastal plain in northern Jiangsu. It is still slowly silting up due to the action of sea currents, and is an emerging land.
Dongtai City is crisscrossed by rivers, ports and lakes
Shibali River
Shibali River was historically the river that transported salt to the west of Liangduo Salt Farm. During the Qianlong reign of the Qing Dynasty, Xingtiao was built in the eleventh year (1746), starting from the Chuanchang River on the west side of Liangduo Town in the east, to Dongyong Temple in Tainan Town in the west and entering the Taidong Canal, with a length of 10.67 kilometers. Because the distance from Liangduo to the mouth of the Taidong Canal and from the mouth to Dongtai City are both 18 miles (approximately), it is named "Eighteen Miles River".
He Duo River
He Duo River is the salt transport river of He Duo Salt Farm, also known as He Duo Changzao River. It starts from the Tongyu Canal on the east side of Taicheng in the west, ends at Chuandong Gate in the east and enters the sea. The entire journey spans Dongtai and Dafeng. It flows through the towns of Taitung (office), Haifeng and Touzao in Dongtai, with a length of 26.6 kilometers.
Dongtai River
Dongtai River is the salt transport river of Dongtai Salt Farm. It is also called Dongtai Changzao River and Jianyan River. There is no research on the time of excavation. According to "Huainan Middle School" In the early Qing Dynasty, the Dongtai River started from the Chuanchang River in Taicheng in the west, and ended in the Zhangjiatuan River area in the east. After the coast moved eastward, the river extended eastward, but there was no access to the sea in the east. In addition, the terrain along the coast was high on both sides and low in the middle. The accumulated water cannot be drained out. In the 29th year of Hongwu in the Ming Dynasty (1396), the river was dredged. In the fifth year of Qianlong reign of the Qing Dynasty (1740), and again in the 20th year, dredging was carried out twice. In the sixth year of Jiaqing (1801), two longitudinal branches, Meijiazao and Panjiazao, were opened on the north bank of Dongtai River.
Laoliangduo River
Historically, it was the salt-carrying river of Liangduo Salt Farm, also known as Liangduohai River and Liangduochangzao River. Today's Liangduo River is a new east-west river dug south of the river in the early 1970s on the basis of the old Liangduo River.
Sancang River
The original name was Anfeng River. It was renamed to its current name in the early 1950s. Historically, it was the salt river of Anfeng Saltworks, also known as Anfeng Changzao River. The Chuanchang River in Fengchang extends eastward to Nan Shenjiazao, with a length of 15 kilometers. In the fifth year of Emperor Kangxi's reign in the Qing Dynasty (1666), it extended eastward from Nan Shenjiazao. In the forty-seventh year of Emperor Kangxi's reign, the fifth year of Emperor Kangxi's reign (1740), the twentieth year of his reign, and the third year of Jiaqing's third year (1798), the river was dredged several times.
Dongtai has a north subtropical oceanic climate with four distinct seasons, abundant sunshine and abundant rainfall. The average annual rainfall is 1044 mm, the annual average temperature is 15.6°C, the annual sunshine is 2209 hours, and the annual average frost-free period is 237 days. Alluvial plains of the middle and lower reaches of the Yangtze River, the soil is sandy, and the soil organic matter content is 1.4%.
Dongtai City’s natural tourism resources are mainly ecological resources. Its coastline stretches for 85 kilometers and its tidal flat resources of more than 1.5 million acres rank first in Yancheng. Dongtai is located on the coast of the Yellow Sea. The coast is the confluence of the East China Sea's advancing wave and the Yellow Sea's rotating wave. Under the action of the tide, the offshore sediment gradually precipitates with the converging point as the root to form a radial sandbar. 6,000-10,000 acres of land are formed every year. The area grows towards the sea and there are inexhaustible land resources.
The existing tidal flat area outside the city’s seawall is more than 1.55 million acres, including more than 1.16 million acres in the intertidal zone and more than 390,000 acres in the tidal zone, accounting for about 22% of the tidal flat area in Jiangsu Province. Yancheng City tidal flats 37% of the area. Rich land resources and product resources are new economic growth points for cultivating and developing "Maritime East Taiwan". The large tidal flats also breed rich animal and plant resources. The plants are mainly reeds, cogongrass, apocynum, rice grass, metasequoia, spiny cedar, and bamboo; the animals include prawns, swimming crabs, clams, mud snails, razor clams, yellow croaker, pomfret, eel fry, and rare birds such as red-crowned cranes and black-billed gulls. wait.