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Vertical axis wind turbine

Building this DIYs project helps to understand how wind turbines work and generally how to transform a mechanical movement into electricity. This principle can be found in devices we use every day (bicycle dynamo, car alternator, etc.). The same principle is also used by most of our electricity ... »
turbines, transform, bicycle, dynamo, alternator
Note
Difficulté
Durée2h 0 min.
Date24.05.2013
Langue(s)

Solar flashlight

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
Durée2h 30 min.
Date17.05.2013
Langue(s)

Adiabatic solar air conditioner

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
Durée3h 30 min.
Date17.05.2013
Langue(s)

Solar house

Building a solar house model helps to understand how it is possible to use the power of the Sun to save energy or even to be completely independent from the energies we normally use in our buildings. Even if they are still rare, some buildings already use only renewable energies. These 'autonomous ... »
energies, renewable, air-tight, illustration
Note
Difficulté
Durée4h 0 min.
Date16.05.2013
Langue(s)

Solar chimney

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
Durée3h 0 min.
Date16.05.2013
Langue(s)
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