Velleman KNS14 Manuale Utente Scaricare il pdf (Pagina 5)

Assembly of the small electric fan:

Connect small round white adapter to the motor axis.

Connect the fan blade to the adapter.

Using a Reversible Fuel Cell to Power a Small

Motor with Fan Blade

Connect the motor with electric fan to the reversible fuel cell using the cables as shown. The motor should begin to turn and

consume the hydrogen fuel stored in the cylinders. The fan may need to be flicked with your finger to start.

Take your WindPitch experimentation to the next level !

Listed below are additional wind experiments that can be performed with the WindPitch wind turbine using a multimeter or with Horizon’s Renewable

Energy Monitor and your computer. Please refer to the experiments section located on the Horizon Renewable Energy Curriculum CD.

● Using Different Blade Shapes Create Power

This experiment demonstrates how blades with different curvatures produce different degrees of power output. Wind turbine blades are shaped like

airplane wings, and one size does not fit all requirements. You will measure and understand how using the right blade shape can produce optimum

power for different wind conditions.

● How Many Blades Are Best? 1, 2, 3, 4…

Using the right number of blades for a given wind condition is important in extracting the maximum electrical power from a wind turbine. You will

measure and understand the choices between the numbers of blades that are necessary to produce best results.

● Adjusting Blade Pitch for Best Performance

Angling the blades into and away from the wind are important elements in creating maximum power – or slowing the speed of rotation.

This experiment will show you the techniques for stalling and furling as well as adjusting the blade pitch to extract the maximum degree of

power from the wind.

● How Much Power Can Be Extracted from the Wind

While power from the wind is free as long as it blows, it is still limited to certain physical laws. This experiment will show you how to measure wind speed

versus extracted wind power.

● Using Wind Power to Generate Hydrogen

One important use of wind power is to generate hydrogen in a clean, non-polluting manner. This experiment shows you exactly how to do it.

● Measure Wind Turbine Performance Using RPM

Using our electronic measurement tool you can measure the voltage, current, power and RPM (revolutions per minute) rotational speed of the wind

turbine and see it displayed on the measurement tool as well as your computer. Watch the RPM as it changes with wind speed and resistor loading

and witness how to slow down and even stop the wind turbine spinning without even touching it – just by adding the right resistor combinations.

Make measurements for wind power and turbine efficiency to really understand how this remarkable device works.

● Build a Wind Farm

Arrange multiple WindPitch turbines in series and parallel configurations in order to study the voltage, current, and power generated.

Design a simulation of a commercial wind farm in model scale and learn the potential of wind power as a mass energy source.

● Maximum Power Point Tracking

This experiment uses a variable resistor, much like the round knob on the volume control on your car radio, to harvest the maximum power

that the wind turbine produces. Just like tuning in a particular radio station you can fine tune the wind turbine’s performance to generate maximum

power by adjusting the resistor to the correct value. You will find that the maximum power varies with wind speed, the number of blades and blade

pitch so it is always changing. By performing this experiment you will come to understand how to maximize the power output of the wind turbine

under many different conditions. This is called MPPT or Maximum Power Point Tracking and all commercial wind turbines use it to achieve optimum

performance. Now you can do the same in model scale.

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