 | 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 |  | | Durée | 4h 0 min. | | Date | 16.05.2013 | | Langue(s) | français deutsch english |
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 | 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 |
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 | This DIYs project is a good way to discover the power of the Sun, and the use of a renewable energy to cook without polluting or increasing deforestation. The portable solar cooker uses 3 principles: the greenhouse effect, the concentration of light with reflective panels and the ability of black ... »
renewable, polluting, deforestation, greenhouse, reflective
| | Note | | | Difficulté |  | | Durée | 2h 30 min. | | Date | 15.05.2013 | | Langue(s) | français deutsch english |
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 | Building a solar boat helps to understand how photovoltaic solar cells can be used to produce electricity. Toy using solar cells represent often machines that do not exist or which are not logical. It is not uncommon indeed to find toys of helicopters or windmills powered by photovoltaic cells. ... »
photovoltaic, windmills, powered, geneva
| | Note | | | Difficulté | | | Durée | 3h 0 min. | | Date | 14.05.2013 | | Langue(s) | français deutsch english |
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 | Building a lamp with energy saving bulbs demontrates that it is possible to create a nice looking lamp delivering a good an strong light while consuming 5 times less energy. This model uses two bulbs in order to vary the light intensity. This is usally impossible with standard energy saving lamps. ... »
lamp, bulbs, intensity, lamps, lighting
| | Note | | | Difficulté |  | | Durée | 2h 30 min. | | Date | 13.05.2013 | | Langue(s) | français deutsch english |
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