 | Bulding a bicycle electricity generator helps to understand how it is possible to produce electricity from a magnet, a copper wire coil and a movement. This technique found in traditional bicycle dynamos is also used in electric power stations. Unfortunately less bicycles are equiped with ... »
bicycle, generator, magnet, wire, coil
| | Note |  | | Difficulté |  | | Durée | 3h 0 min. | | Date | 24.05.2013 | | Langue(s) | français deutsch english |
|
 | Building a solar torch (flashlight) helps to understand how it is possible to store the energy of the Sun and use it later at night. photovoltaic cells transform the energy of the sun in electricity that can be stored in a rechargeable battery. Photovoltaic cells are now widely used and can be even ... »
torch, flashlight, photovoltaic, transform, rechargeable
| | Note |  | | Difficulté |  | | Durée | 2h 30 min. | | Date | 17.05.2013 | | Langue(s) | français deutsch english |
|
 | This DIYs project shows how to build an ecological air conditioning system. The electricity of the fan is generated by a photovoltaic cell and the air is cooled simply by evaporating water. Conventional air conditioners are very energy consuming. They work like a fridge and need a lot of ... »
ecological, conditioning, photovoltaic, cooled, evaporating
| | Note | | | Difficulté | | | Durée | 3h 30 min. | | Date | 17.05.2013 | | Langue(s) | français deutsch english |
|
 | Building this torch (flashlight) helps to understand how it is possible to transform mechanical energy into electricity. This type of transformation is achieved in most of our power plants. This DIYs project reveals all the components of an electric generator. By using a small electric motor ... »
torch, flashlight, transform, generator, motor
| | Note | | | Difficulté | | | Durée | 3h 0 min. | | Date | 16.05.2013 | | Langue(s) | français deutsch english |
|
 | The use of sun energy is not limited to photovoltaic cells for electricity or solar thermal collectors for heating. Other ideas exist, often still experimental, like the solar chimney. A huge project of this type is planned in Australia with a tower 1 km high! The construction of a solar chimney ... »
photovoltaic, collectors, chimney, greenhouse, absorption
| | Note | | | Difficulté | | | Durée | 3h 0 min. | | Date | 16.05.2013 | | Langue(s) | français deutsch english |
|
|
