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Talk:Directory:PowerAvenue Corp

Lasted edited by Andrew Munsey, updated on June 14, 2016 at 9:33 pm.

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Discussion page for Directory:PowerAvenue Corp


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There might be some potential benefits to this system, but portability for mobile applications doesn't appear to be one of them.

According to the company's materials it requires 7.6 kg of prepared silicon plus 100 kg (100 l) of water to produce

1.1 kg of H2.

1.1 kg of H2 contains about 156 Mj of energy (100% conversion efficiency), so 107.6 kg of material must be carried to get 156 Mj of energy.

Gasoline on the other hand provides about 46 Mj of energy per kilogram, so to get the same 156 Mj of energy one would have to carry only 3.9 kg of material.

(see the Wikipedia entry on 'energy density')

The best current battery technology in terms of energy density (Li-ion) provides about 250 Watt-hours per kilogram or roughly .9 Mj per kilogram. With these batteries you would need to carry 173 kg of batteries to store the same 156 Mj of energy. So the sand process is marginally better than the best available batteries, but does the complexity of the process, need to deal with liquids, recycling of the spent material, and so forth really merit the 12% weight savings ?

There might be some merit in the idea that the sand process should permit near instantaneous refuelling, rather than an hours-long recharge time as for batteries, and the sand process also from the company's material seems to be capable of purifying water (if you need that). So I don't rule out that the process might be useful to someone, but it certainly doesn't look to me like a viable solution for portable equipment or automotive use.