Wind turbines are frequently used to generate electrical energy. The following thermal-wind generator changes the energy of the wind to heat energy and heats up the heating water. This uses the principle of the so-called Joule apparatus originally
The production of electricity by conversion of heat differences to electric current. The principle of Peltier cells, which are widely used for cooling, finds application as a thermoelectric generator. Just make different temperatures on the two surfaces
Sand is a suitable material for energy storage? When, after a sunny day we'll come to the beach at night and get our hands in the sand, will be tepid. In our country must do a children's sandbox
A genius, a widespread turbine bearing the name of its inventor, can benefit the energy of the wind from the low speed and at the same time, it is structurally very simple and the final product from a variety of materials.
Biogas plant at home in the backyard? Many agricultural cooperatives has today in the premises of the biogas station. The idea of home bioplynky in this context is somewhat surprising. Yet, in countries in Asia and Africa small
All lies! Why we neohřáli a little bit of water. Every experienced gardeners has in the garden compost, where it stores the plant surplus from the garden. In addition to the quality of humus, however we can from the compost pile to get
Spinning polamu, but surely! It is at the hobby shop is very popular thanks to the simple design, the use of commonly available materials, and last but not least, for your easy to understand the principle. Also leaves considerable space
Let it go! A device for converting wind energy to kinetic energy. This is either used for cyclic movement as is the case with the pump on the water, the older the water mills, hammer mills... Current
Bury the pipe and you'll see. It is possible to use the energy, which is located just a few meters below the surface of the heating, cooling? Of course, heat pumps ground water used this possibility. But it is possible
Why would the Sun not cool? Use a chimney to ventilate is certainly not a novelty. Use the chimney to the cooling is quite an interesting feat. Solar chimney increases the energy of the Sun to move the chimney.
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