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Découverte. Le matériau qui transforme le CO2 en oxygène. Voici le matériau qui transforme le CO2 en oxygène Julian Melchiorri est un étudiant du Royal College of Art de Londres.

Découverte. Le matériau qui transforme le CO2 en oxygène

Il a développé Silk Leaf (feuille de soie) courant 2014, un matériau capable de reproduire la fonction d’une feuille d’arbre. Le biomimétisme en application A l’exception de l’homme, le monde du vivant ne produit pas véritablement de déchets. Pourquoi ? Comme une feuille normale, pour fonctionner, il faut à ce matériau de la lumière. . « Mon idée était d’utiliser l’efficacité naturelle dans un environnement artificiel.

Pourquoi ne pas pas utiliser une plante ? Il est vrai qu’une plante peut réaliser ce travail sans investissement. A ce jour, la création de l’étudiant reste de l’ordre du concept. Julian Melchiorri imagine déjà son matériau utilisé dans l’espace pour produire de l’oxygène sans encombrement, ou bien des écoles, bureaux ou hôpitaux à l’architecture respirante et écologique. Source : independent / iflscience / Vimeo. Wind Technology. Jeff McIntire-Strasburg has been blogging a greener world via sustainablog since 2003! Technology Published on April 14th, 2014 | by Jeff McIntire-Strasburg Renewable energy = high upfront costs… right?

Jeff McIntire-Strasburg has been blogging a greener world via sustainablog since 2003!

Yes, if you’re paying someone else to put your system together for you. Now, that seems like kind of a no-brainer for most of us: I certainly don’t feel like I know enough to build my own solar panel array or wind turbine. But folks like Marcin Jakubowski of Open Source Ecology, and Daniel Connell, who created the Solarflower, think that an awful lot of us can build relatively sophisticated technology on our own… if we have the right instructions, and if the materials and tools required are easily available. Daniel reached out to me last week to share his newest tutorial at, which shows you how to build a wind turbine. The turbine uses the ~40% mechanically efficient Lenz2 lift+drag design. Is it safe, though?

Impressive! Build this open source DIY wind turbine for $30. Getting started with home wind energy projects can set you back a pretty penny if you buy a finished product, but if you're a little bit handy and don't mind scrounging for materials and getting creative in the garage or backyard, you can try your hand at building one of these DIY wind turbines for about $30 in materials.

Build this open source DIY wind turbine for $30

After all, it is #iheartrenewables week! We've previously covered Daniel Connell's open source concentrated solar collector plans, but now he's back with another great DIY renewable energy project, a vertical axis wind turbine based on the Lenz2 lift+drag design. Connell's design calls for using aluminum lithographic offset printing plates to catch the wind, which he says can be obtained cheaply (or possibly even free) from an offset printing company, and a variety of hardware and a bicycle wheel.

"The turbine uses the ~40% mechanically efficient Lenz2 lift+drag design. Lenz2 turbine. A few details for building the 3ft diameter x 4ft tall Lenz2 turbine...

Lenz2 turbine

Below is a drawing for the wing ribs cut from 3/4" plywood. NOTE: The above drawing shows that only 6 ribs are required, that should actually be 9 ribs required. I originally designed it with only the end ribs in place with a stiffener bracket in the center. The 3rd rib actually makes them much stronger. Wings... The wings are basically built from 3/4" plywood for the ribs and the stringers were cut from treated 2x4's. Above is another shot of the wing frame The rivets are aluminum 1/8" and are 3/4 to 1 inch long. I start by bending a 90 degree angle on the leading edge of the aluminum and rivet it to the top outer leading edge of the wing frame. When the aluminum is riveted to the frame bend the trailing edge to form a seal of sorts to the rear stringer. The alternator for the roof top model is simply a modified version of my 500 watt kit. Basics of a Wind Turbine. Wind turbine homemade. Jamaican Built Wind Turbine 1,000 Watts. JAMAICAN BUILT WIND TURBINE. How to build a homemade stator for a P.M.A generator (wind turbine, hydroelectric)

Vertical Axis Wind Turbine Generator.  Wind turbine Kits and Supplies. Ротор Онипко \ Onipko Rotor. Maglev windgenerator. Maglev windgenerator. MagLev Wind Turbine Home Made. FAIRWIND - how to make windmill blades from plastic bottles.