Re:The question every firefox user is asking
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Opera 8 Released
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For adblocking, you should try Proxomitron. I've found this to be a god-send for browsing - blocks ads, popups, etc, etc. Plus, the blocklists are constantly being updated by dedicated users, and can be found at CastleCops. For Linux, try Privoxy.
Not 24% of coastline, but 24% of total tidal energy. You can't assume that the waves are equal everywhere along the coastlines.
And 7% of total energy demand is nothing to scoff at. Imagine if it was actually realised - a lot of greenhouse gases would be saved. All I hope is that the picture is still rosey after an in-depth environmental assessment.
All the hydrogen produced today comes from reforming natural gas. So we do "dig" it out of the ground after all.
And that's why this new solar panel technology is so exciting.... it makes solar power more viable to run electrolysers to generate hydrogen, instead of further depleting our dwindling fossil fuel supply.
Sure, you can use steam reforming to produce hydrogen. The problem with steam reforming, however, is that it requires a lot of energy (you need a lot of heat and pressure - 1000K and 4bar). So the whole point is to avoid reforming.
The methanol fuel cells being produced by Toshiba use a polymer electrolyte at low temperature. The low temperature only forms CO2 without the formation of coke.
SOFCs on the other hand, are generally high temperature (1200K), that will form coke if fed hydrocarbon fuels directly due to the high catalytic activity of the state-of-the-art nickel catalysts. Current research is focusing on using a copper catalyst, which has a lower activity, thus little to no coke formation.
As for forming ethanol by running a FC in reverse, that is not true. While theoretically feasible, it is neither thermodynamically or kinetically favoured.
Current hydrogen storage technology is looking into sodium borohydrides (NaBH4 and NaAlH4), though I don't know much about them.
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For adblocking, you should try Proxomitron. I've found this to be a god-send for browsing - blocks ads, popups, etc, etc. Plus, the blocklists are constantly being updated by dedicated users, and can be found at CastleCops. For Linux, try Privoxy.
Not 24% of coastline, but 24% of total tidal energy. You can't assume that the waves are equal everywhere along the coastlines.
And 7% of total energy demand is nothing to scoff at. Imagine if it was actually realised - a lot of greenhouse gases would be saved. All I hope is that the picture is still rosey after an in-depth environmental assessment.
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Daily energy news and discussion: http://www.thewatt.com/
All the hydrogen produced today comes from reforming natural gas. So we do "dig" it out of the ground after all.
And that's why this new solar panel technology is so exciting.... it makes solar power more viable to run electrolysers to generate hydrogen, instead of further depleting our dwindling fossil fuel supply.
Actually, fuel cells can have better well-to-wheel efficiencies than the standard gasoline internal combustion engine. In the May 2004 edition of Scientific American, this article http://www.sciamdigital.com/browse.cfm?sequencenam eCHAR=item2&methodnameCHAR=resource_getitembrowse& interfacenameCHAR=browse.cfm&ISSUEID_CHAR=CB826BAE -2B35-221B-6E2587F29CF2C88A&ARTICLEID_CHAR=CB9BE5E 6-2B35-221B-6F2461DEF9B52B9C&sc=I100322 shows that a fuel cell powered by steam reforming has a total efficiency of over 20%, while an ICE has an total efficiency of about 10%.
Sure, you can use steam reforming to produce hydrogen. The problem with steam reforming, however, is that it requires a lot of energy (you need a lot of heat and pressure - 1000K and 4bar). So the whole point is to avoid reforming.
The methanol fuel cells being produced by Toshiba use a polymer electrolyte at low temperature. The low temperature only forms CO2 without the formation of coke.
SOFCs on the other hand, are generally high temperature (1200K), that will form coke if fed hydrocarbon fuels directly due to the high catalytic activity of the state-of-the-art nickel catalysts. Current research is focusing on using a copper catalyst, which has a lower activity, thus little to no coke formation.
As for forming ethanol by running a FC in reverse, that is not true. While theoretically feasible, it is neither thermodynamically or kinetically favoured.
Current hydrogen storage technology is looking into sodium borohydrides (NaBH4 and NaAlH4), though I don't know much about them.