Two publications suggest a means of containing hydrogen in a pressure vessel that is conformable, lighter and safer than a simple pressure vessel. The potential methods of storing in a vehicle are numerous and none have surfaced that are ideal. This is a rather novel one, but does not strike me as the ultimate answer. The real answer, in my opinion, if hydrogen is needed at all for cars, is to use it in fuel a cell as a replacement for the ICE in a plug-in vehicle.
Examination of Poylymeric Foam as an On-Board Vehicular HPR Hydrogen Storage Media
Hydrostatic pressure retainment (HPR) is an innovative theory for gaseous pressure vessels. An ideal HPR pressure vessel contains an array of spherical cells arranged in a homogeneous fashion that may be likened to a simple-cubic (SC), bodycentered cubic (BCC), or face-centered cubic packing structure (FCC)
The main advantages of HPR pressure vessels over traditional pressure vessels are threefold. First, because an HPR pressure vessel essentially is a matrix of multiple spherical pressure vessels, the outer shell need not be spherical or cylindrical. Rather, the outer shell may take on a conformable geometry, making it more convenient to have a larger tank volume within an automotive assembly. ....
Hydrogen Storage for Automotive Tanks Using Using Hydrostatic Pressure Retainment (HPR) Microstructure
Gas is stored in small bubbles of a foam matrix, thereby forming a series of small spherical pressure vessels. The resulting stress in the material between the bubbles is in a hydrostatic state of tri-axial tension. ....
"if hydrogen is needed at all for cars, is to use it as a replacement for the ICE in a plug-in vehicle."
I agree, that way a very small hydrogen storage tank could extend the range of the plugin far enough to compete with iCE utility.
There is still the problem with fueling though. Maybe a zinc hydide slurry or power could be used as a low pressure storage media/fuel that would be replaced in a fuel tank?
The zinc media vacuumed out and the zinc hydride blown into the fuel tank? This raises the interesting idea of a simple zinc air battery instead of the hydrogen fuel cell though.
Why not vacuum zinc oxide out and put pure zinc back in? And just forget about the hydrogen.
I think liquid fuel in a solid oxide fuel cell/microturbine generator beats this techology too though, at least for now. We already have the liquid fuel distribution system that could be shifted over to biodiesel from algae.
And with serial plugin hybrids that have a 50 mile plugin range, the average mileage would be 10 times our present vehicles (most trips between recharging possibilities are under 50 miles).
In which case the solar collector algae systems could replace oil products as our primary liquid fuel. I recently found an estimate of solar collector space in San Diego county that verifies this.
http://amazngdrx.blogharbor.com/blog/_archives/2006/11/27/2529627.html
Posted by: amazingdrx | November 29, 2006 at 10:50 AM
hydrogen is free. what costs is the machine to extract it.i will build this machine.
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I doubt about the use of this products
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