The picture you see above is the ThreeGorges Dam's massive turbines. It utilizes 32 generators, thirty 700MW units and two 50MW known as Francis turbines.
James B. Francis invented the design in 1848 and these turbines are reaction types, which means water loses is pressure and energy as its moves throught the turbine and drives the runner.
High pressure water enters through the spiral casing surrounding the guide vanes and the water flow towards the runner blades will spin at 75 revolutions per minute, driving a vertical shaft attached to an immense electromagnetic generator.
The main array of 700MW turbines each weigh approximately 6,000 tons and pass between 21,000–34,000 cubic feet of water every second. These turbines achieve an average efficiency—how much of the water's energy is converted into mechanical energy—of nearly 95 percent.
In the eight years, the dam has been even partially operational, it has produced over 500TWh of electricity.
What if you could sit without actually sitting? Imagine a chair that's actually wearable. The 'Archelis' is that type of chair. Planned and produced by Japanese company Nitto alongside the collaboration with Chiba University's Frontier Medical Engineering Center, the wearable chair will strap onto your legs, allowing the chair to move along with you. Read more
Instead of just messaging, here's a super simple chat-based text game you can play inside Facebook messenger. All you have to do is type out some commands, and you'll be seeing the game available. Read more