Parabolic solar cooker
The folding parabola with leaves decomposing like the petals of daisies. Or also a futuristic tube with a reflecting surface, into which you put the raw meat and pull the finished steak. Such are the forms of Solar,
Savonius rotor
Savoniův rotor uses the energy of the wind on a different principle than the propeller. It has other characteristics, the more favorable especially in low wind. In the book is described in detail the construction of the facilities and especially all the possible applications, such as pumping water, the production of compressed air, but mainly to the production of electric current. In detail, are discussed all types of generators ac and dc current, with excitation permanent magnet and continuous winding supplied by an external source. For all the structural variants are in tables and graphs demonstrated operational characteristics. Building instructions are accompanied by detailed drawings and diagrams. The obtained performance is up to 1 kW.
Heat generator driven by a wind turbine on the principle of Joule machines
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
Thermoelectric generator
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 energy storage
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
Savonius wind turbine
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.
Domestic biogas plant
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
Compost water heater
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
Vertical omnidirectional turbine
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
Wind turbine – basic division
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