Paul Smith, was cogitating over hydrogen power’s shortcomings—storage, safety, refueling infrastructure—one day as he loaded up his car’s CD player. Zap! In a bolt of inspiration he realized he had come up with a safe and easy to transport storage system for hydrogen. This takes the form of hydride compact discs, where the hydrogen molocules ‘bond’ to the substrate of the CDs. A laser ‘reads’ them, releasing the energy to power a vehicle for ranges of up to 300 miles, via fuel cell or even a modified internal combustion engine, like BMW has been running for over a decade.
There are nightmares associated with the acquisition and distribution of hydrogen that could kill this dream in its infancy. Despite the fact that hydrogen is found just about everywhere, it doesn't travel alone. And separating it from other elements, such as oxygen, requires processes that also use energy.
And where does that energy normally come from? It is produced by burning fossil fuels — the stuff we're trying to get away from — in processes that use more energy than the extracted hydrogen is likely to produce. That's called a net energy loser, and until someone solves that problem hydrogen power isn't going to go anywhere.
ian807 wrote:Hydrogen isn't particularly efficient as a carrier of power, but here's the deal.
If electricity is cheap enough, and abundant enough, we can use it, inefficient as it is.
This is possible via a number of methods, but probably the easiest and cheapest method is hydro power. ...
cephalotus wrote:BMW, maybe the biggest promotor of hydrogen drives now shows a plug in electro- diesel (sic!) sports car.
Unthinkable only 5 years ago...
http://www.spiegel.de/auto/aktuell/0,15 ... 49,00.html
Researchers at the Stanford Institute for Materials and Energy Science, a joint institute of SLAC and Stanford University, have produced a hydrogen-rich alloy that could provide insight into the properties of metallic hydrogen, according to a study published in the August 17 issue of Proceedings of the National Academy of Sciences. The work is a step toward materials with revolutionary implications for energy science, enabling lossless power transmission, next-generation particle accelerators and even magnetic levitation.
Every drop of water is stuffed with the greenest of fuels, hydrogen, but getting it out is a challenge. A new material raises the prospect of doing so using noise pollution – from major roads, for example.
A team at the University of Wisconsin-Madison made crystals of zinc oxide that, when immersed in water, absorb vibrations and develop areas of strong negative and positive charge. These charges rip apart nearby water molecules, releasing hydrogen and oxygen gas.
"This is like a free lunch," says lead researcher Huifang Xu. "You are getting energy from the environment just like solar cells capture energy from the sun."
They showed that ultrasonic vibrations under water cause the fibres to bend...
Xu says that lab tests suggested the material can convert 18 per cent of the energy it absorbs from vibration into energy locked up in hydrogen gas
it means that you LIE because you are desperate for money."This is like a free lunch," says lead researcher Huifang Xu. "You are getting energy from the environment just like solar cells capture energy from the sun."
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