Posts tagged power
Hydro Power Project
“Hydro Project”, consists of shots in the construction of dams in Ethiopia and China. Splendid photographs the line between nature and human intervention by photographer Rüdiger Nehmzow.
they’re rather gigantic.
Most people know Nikola Tesla, the eccentric and brilliant man who arrived in New York City in 1884, as the father of alternating current, the form of electricity that supplies power to almost all homes and businesses. But Tesla was a prodigious inventor who applied his genius to a wide range of practical problems. All told, he held 272 patents in 25 countries, with 112 patents in the United States alone. You might think that, of all this work, Tesla would have held his inventions in electrical engineering — those that described a complete system of generators, transformers, transmission lines, motor and lighting — dearest to his heart. But in 1913, Tesla received a patent for what he described as his most important invention. That invention was a turbine, known today as the Tesla turbine, the boundary layer turbine or the flat-disk turbine.
Interestingly, using the word “turbine” to describe Tesla’s invention seems a bit misleading. That’s because most people think of a turbine as a shaft with blades — like fan blades — attached to it. In fact, Webster’s dictionary defines a turbine as an engine turned by the force of gas or water on fan blades. But the Tesla turbine doesn’t have any blades. It has a series of closely packed parallel disks attached to a shaft and arranged within a sealed chamber. When a fluid is allowed to enter the chamber and pass between the disks, the disks turn, which in turn rotates the shaft. This rotary motion can be used in a variety of ways, from powering pumps, blowers and compressors to running cars and airplanes. In fact, Tesla claimed that the turbine was the most efficient and the most simply designed rotary engine ever designed.
If this is true, why hasn’t the Tesla turbine enjoyed more widespread use? Why hasn’t it become as ubiquitous as Tesla’s other masterpiece, AC power transmission? These are important questions, but they’re secondary to more fundamental questions, such as how does the Tesla turbine work and what makes the technology so innovative? We’ll answer all of these questions on the next few pages. But first, we need to review some basics about the different types of engines developed over the years.
it said tesla. i got excited. i do not regret my actions.
it’s an amazing feat of engineering, cooperation and video game-style controls.
Shuttle Endeavour Begins LA Road Trip
Space Shuttle Endeavour will spend the rest of its days as a museum exhibit at the California Science Center (CSC) in Los Angeles. But its final mission has just commenced — a two day haul through LA streets.
A multi-axle, a computer controlled wheeled crawler called the Over Land Transporter (OLT) will carry the shuttle for most of the journey. But a Toyota Tundra will haul it the last 400 meters.
Although not a publicized viewing area for the public, local police departments advised thousands may turn up to see Endeavour waiting for its next move. Are you going to stop and say hey?
Giant Marble Harvests Energy from Sun and Moon
It looks like a giant, glass marble. But this globe is no game. It’s a sun-tracking, solar energy concentrator.
This sun-tracking glass globe is able to concentrate sunlight and moonlight up to 10,000 times and that the system is 35 percent more efficient than traditional photovoltaic designs that track the sun.
Could A Smart Grid Curb Blackouts?
Millions of people lost power after last week’s storms. Could this have been prevented?
