Posts Tagged ‘Energy’

How much energy (in kilowatt-hours) is required to transport a 170 pound person 16 miles on an electric train?

Wednesday, August 15th, 2012

Question by kewldude471: How much energy (in kilowatt-hours) is required to transport a 170 pound person 16 miles on an electric train?

Best answer:

Answer by someguy
ok well work is force x distance. and work is just difference in energy so if you take initial energy to be 0, energy is equal to force x distance.
now 170 pounds is about 77.27kg and the force is 757.27N. the distance is 16 miles = 25.75km so the energy is 19499.397 J. now a Watt is 1J/s. so 1W * 1s = 1J. so 19499.397J = 19499.397W-s. = ~19.5kW-s. multiply this by 1h/3600s (which is 1 cuz theyre equivalent) and you get 0.005416666 kw-h.

hope you understand that. let me know if you need more help

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Innowattech breakthrough in alternative energy from road traffic

Saturday, July 21st, 2012

An Israeli company, Innowattech Ltd., in cooperation with Israel National Roads Company, has recently tested the IPEG™ (Innowattech Piezoelectric Generator) system in the first of its kind pilot project along a ten-meter stretch of highway in Israel. The technology developed by Innowattech in association with Technion IIT (Israel Institute of Technology) is based on piezoelectric materials that enable conversion of mechanical energy exerted by the weight of passing vehicles into electrical energy. One kilometer of Innowattech’s generators along a single lane is capable of producing an average of 200 KWh per hour, sufficient electricity to provide for the average consumption in 200-300 households provided approximately 600 heavy trucks or buses travel through the interval per hour on average. The harvested electricity may be supplied to various road-side applications, such as traffic lights, billboards, enforcement cameras, signs, etc., as well as transferred into the electric grid. The technology may also be used for road data collection (Smart Road). The technology does not increase the vehicles’ fuel intake or affect the road infrastructure. It is not affected by weather conditions and allows electricity to be harvested near the end consumer. Innowattech has also developed the technology for harvesting energy from movement of trains, airplanes and pedestrians, to be tested within months to come. For more information, please visit www.innowattech.co.il or contact Yael
Video Rating: 5 / 5

Would you support the USA as an exclusively nuclear energy entity with electric cars/trains for transport?

Friday, March 23rd, 2012

Question by Baby Raptor: Would you support the USA as an exclusively nuclear energy entity with electric cars/trains for transport?

Best answer:

Answer by a_bush_family_member
Why not use hydrogen powered cars?

Nuclear reactors can easily extract hydrogen from water. That hydrogen can then be used in car’s fuel cells.

BMW World – BMW Hydrogen Cars
http://www.bmwworld.com/hydrogen/

BMW to lease hydrogen cars in April – Green Machines – MSNBC.com
http://www.msnbc.msn.com/id/14798876/

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Energy & Dynamic Braking

Thursday, January 5th, 2012

Energy: you can’t destroy it, but you can certainly waste it. That’s what most motorized vehicles do, including trains. Usually, the energy generated when you stop a moving vehicle is dissipated as heat, and is lost to the atmosphere. With GE’s ecomagination we’ve discovered that you can capture and store that energy, then reuse it – that’s how our hybrid systems work. Watch the video to see a simple illustration of the physics behind dynamic braking. Keep in mind an object’s force is measured in newtons, using the equation force = Mass x Acceleration.

Whats the working principle of Electric Trains…??? Or How Electric Energy converted to Mechanical energy ).?

Wednesday, July 6th, 2011

Question by rajesh p: Whats the working principle of Electric Trains…??? Or How Electric Energy converted to Mechanical energy ).?
In Diesel Trains with Fuel and Oxygen combustion taking place in the cylinder and that combustion energy is converted to Mechanical energy(with the help of Piston,Crank ..etc).Like that how Electrical energy converted to Mechanical energy in Electric Trains…???

Best answer:

Answer by Wurm
The same as any electric motor. The electricity flows through the track to the motor.

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