Šikovné nástroje pro ekokutily
Zajímá vás, kolik sluneční energie dopadá na vaši střechu? Jak často a moc fouká? Který profil vrtule větrníku je nejlepší? Nebo hledáte návod na výrobu domácí solární sušičky? Právě pro
Solar food dehydrator
Drying food in the sun is a method of preserving food known for thousands of years. To this day in many, especially the poor and to the equator the closer countries, dried foods in direct Sunlight. The most commonly
Panemone větrná turbína
Vertical axis wind turbine, an invention more than a millennium old, or also a patent from 1977 and one of the stepping stones for other modern turbine types.
Lenz wind turbine
The Lenz turbine belongs to the group of vertical omnidirectional turbines and its design strongly resembles a Darrieus wind turbine with a "hollowed out" wing interior. It is evident that the author tries to combine two basic principles, namely the resistive
Archimedes wind turbine
Resistance turbine with horizontally oriented axis of rotation. The fancy-looking wind turbine's name refers to the geometric constructions of the mathematician and physicist from Syracuse, Archimedes. The profiling is based on the shells of molluscs and snails.
Solar air heating
If you need to get your bearings in the issue of heating the house, offices but also industrial hall air by using solar energy, this book is just for you. No unnecessary sauce, lots of practical descriptions of specific solutions, including examples from practice. Graphs of efficiency, energy balance, storage of thermal energy. Simply complex assembly technology for solar heating air.
Terracotta (ceramic) cooler
Evaporative cooling of water from the surface of the ceramic material known as terracotta (terracotta). Water absorption terracotta keeps the material constantly moist. This property is used to cool the rooms.
Photovoltaic cell and panel
Direct conversion of solar energy into electrical energy. The amazing invention known throughout the world, which we find on the roof of the most modern buildings of the world, even in remote indigenous village in the middle of the jungle. How to in
Mashrabyia – cooling niche
Mashrabiya was, and still is, a popular construction element of the urban multi-storey houses in the Middle and the Middle east, or North Africa. It's about the niche in the first and higher floor
Darrieus wind turbine
Buoyancy vertical omnidirectional turbine. Buoyancy means that revolves thanks to the difference in pressure between the two sides of the driving blades. Vertical indicates the deposit of its rotational axis perpendicular to the surface, what makes it even