The trains consume the equivalent of around 0.33 liters of gasoline per passenger for every 100 kilometers, while beating airliners in terms of travel time for trips of up to 1,200 kilometers, when transfers and waiting times are taken into account. As reported in the research magazine Pictures of the Future, intelligent controls, recovery of braking energy, and improved aerodynamics account for most of the savings. The Velaro debuted on the Madrid-Barcelona line in early 2007, and it is now also speeding through Russia and China. Service in Germany and France is scheduled to begin in 2011. And it will speed through the Channel Tunnel.
Like the ICE 3, the Velaro does not have a locomotive at the front and back of the train, but rather has drives at every second coach. This provides space for more passengers, and the train can accelerate better and negotiate steeper grades. The motors produce about 8,000 kilowatts, or 11,000 horsepower. Roughly one third of the energy can be reused because the energy released during braking is almost completely recovered at each wheel drive.
A smooth roofline prevents formation of the turbulence normally created by roof-mounted components such as air conditioners. A new contour also reduces air resistance in front of the train. All together, the improved aerodynamics result in energy savings of between six and eight percent. Inside the train, the halogen lamps used previously have been replaced with efficient LEDs, which reduce electricity consumption. The load for the air conditioner also decreases because LEDs produce significantly less waste heat. A new energy management system only activates as many power supply blocks as are needed at the time. Fans are speed controlled and only operated when needed. Most of the electricity-consuming features go into standby mode or are turned down as far as possible when idling.
Driver assistance systems avoid unnecessary braking and acceleration, which yields an additional six-percent energy saving. The train can save ten percent more if the engineer is trained in environmentally aware driving, as is the case in Germany, France, Austria, and Switzerland. The high-speed trains are part of Siemens’ environmental portfolio, with which the company generated about €28 billion in sales in fiscal year 2010.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Tool helps cities to plan electric bus routes, and calculate the benefits
09.01.2017 | International Institute for Applied Systems Analysis (IIASA)
Realistic training for extreme flight conditions
28.12.2016 | Technical University of Munich (TUM)
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
23.02.2017 | Physics and Astronomy
23.02.2017 | Earth Sciences
23.02.2017 | Life Sciences