There is wind today in English: There is wind today.
1. Wind: n. Wind; breathing; breath; intestinal gas; stomach gas; airflow; bend; twists and turns; a circle; a turn.
2. Related words.
Practice: n. practice; implementation; implementation; application; repeated practice; routine; custom; practice time; litigation procedures; usual practices.
Custom: n. custom; custom; patronage; patronage; habit; customary law; practice.
Tendency: n. Trend; tendency; tendency; political association.
Style: n. style; style; elegance; grace; style; rod-shaped object; style; hairstyle.
bearing: n. Standing; gait; relationship; association; tolerance; tolerance; bearing; support; bearing; pivot; orientation; direction angle; azimuth angle; quadrant angle; pattern.
Attitude: n. Attitude; opinion; posture; self-confidence; posture; uncooperative attitude.
Scene: n. place of occurrence; scene; a plot; sight; scene; scenario; scenery; losing temper; making noise in public; field of activity.
view: n. Vision; vision; line of sight; view; opinion; idea; point of view; view; scenery; image.
News: n. News; news; new situations; news reports; news programs; news events; news broadcasts; news figures.
Information: n. News; intelligence; data; information; information; accusation; prosecution.
folk song: n. Folk song.
ballad: n. ballad; narrative poetry; lyrical song; love song.
air-dry: v. to dry; to air dry.
air: n. Atmosphere; air; expression; spirit; melody; minor tune; air; aviation; air transport.
Winnow: v. to raise; to winnow; to blow; to remove the shell of...; to sift; to select; to discover; to identify; to identify and eliminate; to flap with wings.
air dried: v. air-dried; air-dried.
rumoured: adj. Rumored; legendary.
groundless: adj. Unreasonable; unfounded.
Principle of wind power generation:
Convert the kinetic energy of the wind into mechanical kinetic energy, and then convert the mechanical energy into electrical kinetic energy. This is wind power generation. The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then use a speed increaser to increase the speed of rotation to prompt the generator to generate electricity. According to current windmill technology, power generation can begin at a breeze speed of approximately three meters per second. Wind power is forming a craze in the world because wind power does not requireUsing fuel, there is no radiation or air pollution.
The devices required for wind power generation are called wind turbines. This kind of wind turbine can be roughly divided into three parts: wind wheel, generator and tower. The wind wheel is an important component that converts the kinetic energy of the wind into mechanical energy. It consists of several blades. When the wind blows towards the blades, aerodynamic force is generated on the blades to drive the wind wheel to rotate. The blade material requires high strength and light weight. Currently, it is mostly made of fiberglass or other composite materials.
Since the speed of the wind wheel is relatively low, and the magnitude and direction of the wind force often change, which makes the speed unstable; therefore, before driving the generator, an additional one must be attached to increase the speed to the generator. The rated speed gearbox is coupled with a speed regulating mechanism to keep the speed stable, and then connected to the generator. In order to keep the wind rotor always aligned with the wind direction to obtain maximum power, a tail rudder similar to a wind vane needs to be installed behind the wind rotor.
Not all winds can generate electricity. Wind power generation involves unit selection, and the turbines will be selected based on local wind resources. Currently, the commonly used units in the world are 1.5MW/unit, 2MW/unit, 3MW/unit and 5MW each. Whether to generate electricity is determined based on the cut-in and cut-out wind speeds of the wind turbine. For example, the current common 2MW wind turbine has a cut-in wind speed of 3 meters, which means that the wind turbine starts to generate power when the wind speed reaches 3 meters, but the wind speed of 3 meters will definitely not reach full power. At present, domestic units basically require a wind speed of about 11 meters to reach full power. Cutting out the wind speed to 25 meters/second means that when the wind speed reaches 25 meters/second, the wind turbine hub will automatically brake and feather the propeller to stop generating electricity to avoid overspeeding.