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Originally Posted by oil pan 4
At 5x current technology you are effectively burning aluminum in air.
Which is the most energy dense chemical combo that can realistically be accomplished.
The only one that might be more energy dense is oxygen iodine, like for a laser weapons system.
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Regular gasoline is like 100x as energy dense as lithium ion by weight. Don't know how burning aluminum would only be 5x as energy dense.
That's the problem with rechargeable batteries; even if we double the energy we're still 50x less energy dense than petrol, and it isn't clear that nature has allowed a chemistry that dense/cheap/practical.
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Originally Posted by All Darc
Burning... can a burning chemical reaction be compared to a eletron energy reactions ?
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Of course. Energy is energy. The international scientific unit of energy is the Joule.
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Originally Posted by sendler
found several years worth of good data for a 50kW solar PV system in Ithaca, NY. 13.7% capacity factor for the lifetime.
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That's 60,000 kWh per year. At my 8 cent per kWh rate, that would be $4,800 year in electricity. How much did the system cost?
I noticed in only a few years of collecting data, some years had 60% more sunshine than others. That's a huge fluctuation and completely unpredictable from the standpoint of creating a stable and cost effective grid. The daily variance was as much as 10x, which is huge.