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    Suchergebnis für 'Wind'



  • Siemens Stiftung
    Wind turbine – inside view
    Labeled graphic:Rotor and nacelle (engine housing) of a three-bladed wind turbine with a horizontal rotation axis. The inside view of the nacelle is shown, and the individual components are labeled.The three-bladed wind turbine with horizontal rotation axis shown here is the most common design for large wind power plants. The wind turbine consists of a rotor and a nacelle (engine housing), which are installed on a high tower.How it works: The anemometer measures the wind velocity. The data is sent to a monitoring computer, which controls the turbine and operates the yaw motor, which orients the wind turbine. When the turbine is in the optimum position relative to the wind, the wind applies a torque to the rotor blades: The wind turbine rotates (approximately 20 rotations/min) and, along with it, the drive shaft. The gearset converts the rotational speed of the rotor to the rotational speed needed for the generator (in Europe: 1,500 rpm or 3,000 rpm; in the United States: 1,800 rpm or 3,600 rpm). The generator generates the electric power, which is conducted down to the base of the wind turbine via cables. There it is fed into the grid. Under optimum wind conditions, the efficiency of a wind turbine is around 40–51 percent. (The theoretical maximum limit is around 59.3 percent, but this is practically unattainable.)By the way: the brake prevents the wind turbine from rotating, for example, in violent storms or when it requires maintenance. (There are also wind turbines without gearsets; see the description in the “Generator for a wind turbine” medium.) Information and ideas:What are the advantages of a three-bladed wind turbine over a one-, two-, or four-bladed turbine?It should be noted that wind turbines with a vertical rotation axis also exist (Savonius and Darrieus turbines). When are these designs used?

    Bildungsbereiche
    Fach- und Sachgebiete
    Physik
    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Energy Power generation Renewable energy Wind power plant
    Sprachen
    en
    weitere Medien der Reihe:
    How a wind power plant works
    Information module:Overview of the way in which a wind power plant works to generate power and the technologies usedA wind power plant converts the ...
    Hydroelectric plants
    Information module:An overview of the individual types of hydroelectric plants and how they work.Hydroelectric plants convert water’s mechanical ...
    The physics of water turbines
    Information module:A water turbine converts the potential and kinetic energy of water to rotational energy. This module describes the designs of ...


  • Siemens Stiftung
    Wind as an energy source
    Photo: The effect of wind as an energy source, illustrated by a windsock.Wind is the movement of air masses as a result of temperature fluctuations and the resulting pressure differences in the atmosphere. Solar radiation and the earth’s rotation are the mechanisms driving this phenomenon. Wind occurs at different strengths, from gusts to tornadoes. Wind energy has been used throughout human history – in the form of sailing vessels (3,500 years BCE) and windmills (1,700 years BCE), Today wind is one of the most effective renewable, carbon-dioxide-free energy sources. The photo shows a windsock, which is used to measure the wind on land.Information and ideas:The photo is a good way to visualize the renewable energy source of the wind, and it can be used as introduction or for illustration. Information on the use of wind power can be found in the information module “How a wind power plant works" and in the graphic “Wind turbine – inside view" and elsewhere.

    weitere Medien der Reihe:
    Functional design of a wind turbine
    Graphic:The complete structure of a wind turbine including its base and tower is illustrated schematically. The foundation serves to anchor the wind ...
    Pumped storage power plant
    Simulation: The principle of a pumped storage power plant is illustrated as an animation. If surplus energy exists in the power supply grid, water is ...
    Storms and wind power (link list)
    Link list:A collection of selected Internet links for completing the “Storms and Wind Power" inquiry ...
    Turbines and generators in the Walchensee power plant
    Photo:The photo shows the turbine hall in the Walchensee power plant near Kochel in Upper Bavaria, Germany. The horizontal Francis turbines are on ...


  • Siemens Stiftung
    How a wind power plant works
    Information module:Overview of the way in which a wind power plant works to generate power and the technologies usedA wind power plant converts the kinetic energy of air masses to electric energy. This information module explains how this works. There is particularly great potential in the use of wind energy on the open ocean (offshore wind energy). High-voltage direct-current transmission (HVDC) is used for this purpose. Since power generated from wind energy is not available around the clock, energy stores are needed. The statistics show the share of wind power in the power mix of individual countries.By the way: an upwind power plant (solar chimney) is not a wind power plant, but a solar thermal power plant.Information and ideas:Suitable as an introduction to a field trip to a wind power plant.Using the following sources: ABB AG; Fraunhofer IWES; World Wind Energy Association WWWA (2015); International Energy Agency IEA (2010)

    Bildungsbereiche
    Fach- und Sachgebiete
    Physik
    weitere Medien der Reihe:
    Hydroelectric plants
    Information module:An overview of the individual types of hydroelectric plants and how they work.Hydroelectric plants convert water’s mechanical ...
    The physics of water turbines
    Information module:A water turbine converts the potential and kinetic energy of water to rotational energy. This module describes the designs of ...
    Wind turbine – inside view
    Labeled graphic:Rotor and nacelle (engine housing) of a three-bladed wind turbine with a horizontal rotation axis. The inside view of the nacelle is ...


  • Siemens Stiftung
    Functional design of a wind turbine
    Graphic:The complete structure of a wind turbine including its base and tower is illustrated schematically. The foundation serves to anchor the wind power plant in the ground. To guarantee the stability of the wind turbine, a pile or flat foundation is constructed depending on the firmness of the ground. The tower is the largest and heaviest component of a wind turbine. It is usually between 1 and 1.8 times longer than the rotor diameter and can weigh several hundred tonnes. The tower structure itself not only supports the mass of the nacelle and rotor blades, but must also absorb the enormous static loads caused by the varying wind forces. Tubular constructions assembled from stackable concrete or steel segments are generally used. The tower height or hub height is between approximately 120 m and 130 m for an output of approximately 3 MW to 6 MW and with a rotor diameter of approximately 110 m to 130 m.The rotor is the component that converts the energy contained in the wind to mechanical rotary motion using the rotor blades. The nacelle with the machinery train (drive train) contains the entire generating unit. (The functions are described in detail in the “Wind turbine – inside view” medium!)Information and ideas: Physics class could be used to explain why wind currents passing through the rotor blades cause them to move (flow principle of Venturi and Bernoulli).

    Bildungsbereiche
    Fach- und Sachgebiete
    Physik
    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Energy Power generation Renewable energy Wind power plant
    Sprachen
    en
    weitere Medien der Reihe:
    Pumped storage power plant
    Simulation: The principle of a pumped storage power plant is illustrated as an animation. If surplus energy exists in the power supply grid, water is ...
    Storms and wind power (link list)
    Link list:A collection of selected Internet links for completing the “Storms and Wind Power" inquiry ...
    Turbines and generators in the Walchensee power plant
    Photo:The photo shows the turbine hall in the Walchensee power plant near Kochel in Upper Bavaria, Germany. The horizontal Francis turbines are on ...
    Wind as an energy source
    Photo: The effect of wind as an energy source, illustrated by a windsock.Wind is the movement of air masses as a result of temperature fluctuations ...


  • Siemens Stiftung
    How strong is the wind?
    Information sheet:Classification of wind forces according to the Beaufort scale. Students will learn how to classify wind forces according to the Beaufort scale. In the assignment section, students will classify the effects of the wind according to the scale, and they will graphically illustrate three wind forces of their choice. An option for fast students is an online search concerning the effects of the wind on the sea according to its force.Information and ideas:A suggested link for working on the inquiry task can be found in the link list for the content package for interactive whiteboards entitled “Air, wind, and weather," which is available on the media portal of the Siemens Stiftung.

    Bildungsbereiche
    Fach- und Sachgebiete
    Sachkunde
    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Air Weather Wind
    Sprachen
    en
    weitere Medien der Reihe:
    Air
    Graphic:Landscape motif with objects intended to evoke associations with the topic of air. As an image for discussion for the students. ...
    Air and weather
    Information sheet:This sheet explains terms such as temperature, wind, and air pressure and describes what they have to do with the weather. Apart ...
    Air, wind, and weather
    Content package for interactive whiteboards:Individual media related to „Air, wind, and weather“ are compiled here in a meaningful didactic way ...
    Biplane
    Photo:Biplane of British manufacturer de Havilland Aircraft Company from the 1930s (photo 2007).A biplane is a fixed-wing aircraft with two main ...
    Can I measure the weather?
    Experimentation instructions:How to carry out weather observations with a self-made weather station.Instructions for building a weather station with ...
    Can I measure the weather? (teacher information)
    Teacher information:Teaching method for teachers on the experiments of the experimentation instructions of the same name. This teaching method ...
    Clean air to breathe?
    Photos:Factory chimney from which smoke is rising; a group of trees. The chimney and the trees symbolize the topics of air pollution and natural air ...
    Cyclones and winds
    Matching exercise: Where do each type of tropical cyclone and wind occur? The names of the winds and tropical cyclones must be matched to the regions ...
    Guideline for the “Air, wind, and weather" interactive whiteboard content
    Guideline:This document provides an overview of a possible scenario for using the content package for interactive whiteboards entitled “Air, wind, ...
    How do cyclones form?
    Information sheet:Short introduction about tropical cyclones and an experiment with a “tornado in a jar." This sheet contains a brief ...


  • Siemens Stiftung
    Wind turbine in landscape
    Photo:Wind turbine with surrounding landscape The pictured wind turbine with a power output of 3 MW is located in Upper Bavaria, Germany. Although this region is not particularly windy, from late 2014 to early 2017 it had already delivered more electricity than planned and has proven to be profitable. Reviews have shown that the wind turbine has had no negative consequences on birds and bats during this period.Information and ideas:The photo is suitable as an introduction to the topic of wind energy and the environment. Inquiry task: The students can research what legal requirements exist for installing wind power plants. What are the pros and cons of the installation of such wind turbines?

    Bildungsbereiche
    Fach- und Sachgebiete
    Geographie Physik

  • Film

    ZDF tivi
    Löwenzahn: "Wind"
    Löwenzahn-Sendung zum Thema "Wind"

    Medientypen
    Video
    Lernalter
    6-9
    Schlüsselwörter
    Wind
    Sprachen
    Deutsch


  • Siemens Stiftung
    Energieträger Wind
    Foto: Die Wirkung des Energieträgers Wind dargestellt durch einen Windsack.Wind ist die Bewegung von Luftmassen als Folge von Temperaturschwankungen und den daraus resultierenden Druckunterschieden in der Atmosphäre. Sonneneinstrahlung und Erdrotation sind dafür die treibenden Mechanismen. Wind tritt in unterschiedlicher Stärke von der Böe bis zum Wirbelsturm auf. Die Nutzung der Windenergie geht weit in die Menschheitsgeschichte zurück – in Form von Segelschiffen (3.500 v. Chr.) und Windmühlen (1.700 v. Chr.). Wind gehört heute zu den am effektivsten genutzten regenerativen und kohlendioxidfreien Energieträgern. Das Foto zeigt einen Windsack, der zur Windmessung an Land genutzt wird.Hinweise und Ideen:Das Foto eignet sich dazu, dem regenerativen Energieträger Wind ein optisches Erscheinungsbild zu geben, und ist als Einstieg oder Veranschaulichung einsetzbar. Informationen zur Nutzung der Windkraft sind z. B. im Infomodul „So funktioniert ein Windkraftwerk“ und in der Grafik „Windrad – Querschnitt“ enthalten.

    Bildungsbereiche
    Fach- und Sachgebiete
    Geographie Sachkunde Physik
    weitere Medien der Reihe:
    Generator für Windrad
    Foto:Rotor des Generators einer Windenergieanlage.Es handelt sich hier um einen Vielpol-Generator, erkenntlich an der Vielzahl von Spulen auf dem ...
    Stürme und Windkraft
    Rechercheauftrag:Schwere Stürme nehmen weltweit immer mehr zu. Was sind die Ursachen? Was bedeutet das für die Nutzung der Windkraft zur ...
    Stürme und Windkraft (Linkliste)
    Linkliste:Eine Sammlung ausgewählter Internetlinks zum Rechercheauftrag „Stürme und Windkraft.Die Links können zur Bearbeitung des ...
    Welche Energie steckt in welchem Energieträger?
    Tabelle:Übersicht, woher die Energie, die in den Primärenergieträgern gespeichert ist, kommt und welcher Energieform sie entspricht.Die Energie, ...
    Wellenkraftwerk
    Grafik, beschriftet:Schnitt durch ein Wellenkraftwerk mit Wells-Turbine.In einem Wellenkraftwerk wird die kinetische Energie der Meereswellen in ...
    Zentrale und dezentrale Energieversorgung
    Schemagrafik:Der Aufbau eines zentralen und dezentralen Stromnetzes im Vergleich.Stromversorgung und Fernwärme sind Beispiele einer zentralen ...


  • Siemens Stiftung
    Wind energy
    Video (00:36 minutes):Wind is produced by the movement of air masses. This film shows how humans harness the wind for their own use. The film starts with some typical manifestations and effects of wind (for example, damage to trees caused by wind). It then shows the use of wind power in the past and today. The video is an excerpt from the teaching DVD “Air and respiration – Learning circle."

    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Power generation Wind
    Sprachen
    en
    weitere Medien der Reihe:
    Cells of a leaf
    Video (02:00 minutes): Different plant cells are observed under an electron microscope. The introduction to the video briefly shows different plants, ...
    How wind is produced
    Video (00:35 minutes):Wind is produced by the movement of air masses. This film shows how this process works. The buoyancy of warm air is explained ...
    Properties of a concave reflector
    Video (00:22 minutes):Light strikes a concave reflector and ignites a sparkler in the process.The video shows a light source directed at a concave ...
    The wind
    Video (01:12 minutes):Wind is caused by the movement of air masses. The video shows how this works and how people make use of the wind.The video ...


  • Siemens Stiftung
    The wind
    Video (01:12 minutes):Wind is caused by the movement of air masses. The video shows how this works and how people make use of the wind.The video starts with several typical occurrences and effects of wind (for example, wind damage to trees), and then shows past and present uses of wind energy. It explains the buoyancy of hot air based on the example of a hot air balloon. An animation explains how wind is caused by the exchange of layers of cold and warm air in the atmosphere.This video is an excerpt from the teaching DVD, „Luft und Atmung – Lernzirkel".

    Bildungsbereiche
    Fach- und Sachgebiete
    Biologie
    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Power generation Weather observation
    Sprachen
    en
    weitere Medien der Reihe:
    Cells of a leaf
    Video (02:00 minutes): Different plant cells are observed under an electron microscope. The introduction to the video briefly shows different plants, ...
    How wind is produced
    Video (00:35 minutes):Wind is produced by the movement of air masses. This film shows how this process works. The buoyancy of warm air is explained ...
    Properties of a concave reflector
    Video (00:22 minutes):Light strikes a concave reflector and ignites a sparkler in the process.The video shows a light source directed at a concave ...
    Wind energy
    Video (00:36 minutes):Wind is produced by the movement of air masses. This film shows how humans harness the wind for their own use. The film starts ...


  • Siemens Stiftung
    8. Renewable energies – 8.3 Wind power (teacher instructions)
    Experimentation instructions:Background information on the content and practical information on conducting the “Wind power" experiment. Wind power is one of the important sources of energy for a sustainable energy supply. The experiment shows the basic function of generating electrical energy using wind.

    weitere Medien der Reihe:
    8. Renewable energies – 8.1 Solar cell (student instructions)
    Experimentation instructions:Detailed instructions and questions for students on conducting the experiment “Solar cell”. The question “What are ...
    8. Renewable energies – 8.1 Solar cell (teacher instructions)
    Experimentation instructions:Background information on the content and practical information on conducting the “Solar cell" experiment. The ...
    8. Renewable energies – 8.2 Using solar cells to run an electric motor (student instructions)
    Experimentation instructions:Detailed instructions and questions for students on conducting the experiment “Using solar cells to run an electric ...
    8. Renewable energies – 8.2 Using solar cells to run an electric motor (teacher instructions)
    Experimentation instructions:Background information on the content and practical information on conducting the “Using solar cells to run an ...
    8. Renewable energies – 8.3 Wind power (student instructions)
    Experimentation instructions:Detailed instructions and questions for students on conducting the experiment “Wind power”. The question “How can ...
    8. Renewable energies – 8.4 Storage of energy in a capacitor (student instruction)
    Experimentation instructions:Detailed instructions and questions for students on conducting the experiment “Storage of energy in a capacitor”. ...
    8. Renewable energies – 8.4 Storage of energy in a capacitor (teacher instruction)
    Experimentation instructions:Background information on the content and practical information on conducting the “Storage of energy in a ...
    8. Renewable energies – 8.5 Hydrogen and fuel cell (student instructions)
    Experimentation instructions:Detailed instructions and questions for students on conducting the experiment “Hydrogen and fuel cell”. The question ...
    8. Renewable energies – 8.5 Hydrogen and fuel cell (teacher instructions)
    Experimentation instructions:Background information on the content and practical information on conducting the “Hydrogen and fuel cell" ...
    8. Renewable energies – Additional information and 8.5b The voltage divider and the current divider (teacher instruction)
    Guideline:Technical background information on the topics of electric current and energy for elementary school teachers.The document introduces the ...


  • Siemens Stiftung
    B4 Wind (teacher instructions)
    Experimentation instructions for Experimento | 8+:Background information on the content and practical information on conducting the “Wind” experiment, which comprises two subexperiments.The teacher instructions include information on the following: the main question, relevance to the curriculum, skills, notes on conducting the subexperiments, the research group, further research assignments, and the reference to technology.The experiment comprises two subexperiments:• Measuring air pressure• Wind erosionThe students will recognize wind as a component of weather and develop an understanding of the term “air pressure.” In addition, they will develop ideas for protection against wind erosion.Notes: • Observe the safety information in the instructions as well as the applicable safety guidelines for your school.• All materials mentioned in the instructions will have to be purchased directly from commercial sources.

    Medientypen
    Lernalter
    6-9
    Schlüsselwörter
    Air Wind
    Sprachen
    en
    weitere Medien der Reihe:
    B4.1 Measuring air pressure (student instructions)
    Experimentation instructions for Experimento | 8+:Detailed instructions and questions for students on conducting the subexperiment “B4 Wind – ...
    B4.2 Wind erosion (student instructions)
    Experimentation instructions for Experimento | 8+:Detailed instructions and questions for students on conducting the subexperiment “B4 Wind – ...
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