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Non-Tech : Alternative energy

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To: atticus4paws who wrote (4099)	6/23/2008 3:24:05 PM
From: E. Charters	Read Replies (1) of 16955

Portable fuel that does not pollute is the only reason to use hydrogen. That is if you all out of other portable fuels and/or pollution is the overwhelming driver. The main problem with hydrogen is where do you get it, and how much do you lose making and storing it...? Once you get it, it makes fuels cells work at about 65% efficiency or ICE or Stirling work very well. I could see a society bereft of fuel, making hydrogen for porta-fuels from wind or geotherm, but the efficiency is very bad by direct electrical "cracking" 'lectrolitikally from wawa. Better to heat the water and once it is ionized then convert it to H2. Making H2 and then using it in a fuel cell reduces your overall efficiency, but it still better than running a diesel. You can reform other hydrocarbons in an engine, make lectricity in the bargain, and then use the reformed fuel in a cell. Average efficiency is about 45%. Of course you have to start with a HC fuel. Very soon mankind will be bereft of practical portable liquid fuels, so hydrogen will then become a consideration. No one is thinking of KOH for fuel cells and we have lots of that. These works right now at high efficiency. fctec.com EC<:-}

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