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Build a wind wind turbine to generate electricity and explore energy transformation.

MaterialsThree PVC pipes, one around 30 centimeter long and also the others at least15 cmlongThree PVC T-jointsOne PVC elbow jointMotorWire (about two feet long)Wire cuttersWood dowelsMultimeterAlligator clipsScissorsTapeHair dryer or fanMaterials because that blades, such as balsa wood, aluminum foil, construction paper, popsicle sticks, etc.

Directions

Insert a 15-cm PVC pipe right into the center hole of a PVC T-joint. Repeat with an additional 15-cm PVC pipe and T-joint. Join the two pieces together by inserting the complimentary ends that the pipes right into the political parties of a third T-joint, through the center hole dealing with up.Insert the continuing to be PVC pipe into the T-joint hole the is dealing with up, so the the pipeline stands upright. Location the last T-joint top top the free end of the tower.Attach 2 wires to the motor. Place the engine securely right into the joint at the peak of the tower. Operation the wires down the tower pipe and out one of the T-joints on the base. If needed, use duct ice cream to store the engine in ar securely.Attach the plastic, ring piece called the hub to the straight, steel piece ~ above the outside of the motor.Connect the wires to the multimeter making use of the alligator clips. Set the multimeter come 20 volts.Place a couple of small, wooden dowels right into the holes of the hub. Produce wind making use of a hair dryer or fan. Check the multimeter to see exactly how much power is generated.Using a variety of materials, design different knives for the wind turbine. Think about the weight, smoothness of surface ar and variety of blades needed. Affix the knives to the dowels utilizing tape.Turn ~ above the hair dryer or pan again and test the turbine v each type of blade you design. Exactly how does the electrical output differ? test the turbine with various wind speeds, such as low, medium and high pan settings. Go the wind speed impact the electric energy output?

What"s happening?

As the kinetic mechanical energy of the moving wind rotates the chisels of the wind turbine, a generator inside the wind turbine is likewise rotated. This causes a coiled cable to rotate about a magnet and creates an electrical current which us measure with a multimeter.

Since power is neither produced nor destroyed, the greater the energy input, the greater the energy output will certainly be. Therefore, the much more mechanical power you start with -- the much faster the knives turn -- the an ext electrical energy will be produced by the turbine.

Background information

Wind is resulted in by distinctions in pressure developed by the uneven heater of Earth"s surface by the sun. Radiation indigenous the sun causes land to acquire thermal energy. The air over the land likewise gains heat energy and expands, coming to be less dense and rising.

This movement causes an area of low press at the surface, creating a vacuum that draws wait in. Cooler, denser wait flows toward the low pressure area at the surface to to fill in the room left by the risen, cook air. This create a convection current and also thermal energy is transformed into kinetic mechanical power in the type of moving air or wind.

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A wind turbine transforms the mechanical power of wind into electrical energy. A wind turbine takes the kinetic power of a relocating fluid, wait in this case, and converts it to a rotating motion. Together wind moves past the chisels of a wind turbine, it move or rotates the blades. These chisels turn a generator. A generator works as an train station of an electric motor; instead of applying electrical power to turn it and create mechanical energy, it offers mechanical power to turn and create electrical energy. Generators spin coiled wire about magnets to develop an electrical current.