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Interesting...the STC for 85% ethanol, or any mix of ethanol and 100LL has been
around since 1999 for the Cessna 180/182 series but nobody knows about it? Taking it one step further, if the STC holds for any mix of ethanol and 100LL, why wouldn't it hold for the gasahol from the local fillemup autogas store? Jim (Robert M. Gary) shared these priceless pearls of wisdom: -http://www.age85.org/ProjectDescription.htm -They're testing it on a 201 right now. Jim Weir (A&P/IA, CFI, & other good alphabet soup) VP Eng RST Pres. Cyberchapter EAA Tech. Counselor http://www.rst-engr.com |
#4
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![]() "Bob Fry" wrote in message ... (Robert M. Gary) writes: http://www.age85.org/ProjectDescription.htm They're testing it on a 201 right now. Allow me to strip a few leaves off the cob.... Yet another ethanol scam. Hey, if you can't sell your corn, raise something else. Don't use fraudulent studies to persuade politicians to force me to buy it. |
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In article , Bob Fry wrote:
"The purpose of the project was to develop a fuel based on ethanol..." I gotta wonder...given that this is being done in the Mid-West...what was more important: to base the new fuel heavily on ethanol, or to find a replacement for 100LL? In other words, in a research project to simply find the best replacement for 100LL, would it necessarily end up as ethanol? Probably not. Is this a solution looking for a problem? Perhaps a solution to the question about how the farmers can sell more of their stuff... Other questions: Doesn't ethanol have less energy / volume than gasoline? Yes, it's heating value is about 2/3 that of gasoline. So what about performance or range? Compared to autogas, ethanol has higher octane (ron=118, mon=100 IIRC), so compared to an autogas tuned engine you can increase the compression and thus improve efficiency. That way one can compensate somewhat for the lower heating value. OTOH, for an engine tuned for high octane gas such as, oh, 100LL, you won't get this benefit. What sort of processing is needed to produce this...can it be done cheaply on a national scale? If it could be done competetively the agricultural industry wouldn't need massive government subsidies, would it? OTOH, if you would factor in the price of a middle east presence to keep the oil flowing, gasoline would be more expensive as well. That does of course not mean that biofuels will be forever uncompetetive. When oil supplies dwindle, the price will increase. At the same time, more efficient ways of biofuel production are developed. -- Janne Blomqvist |
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"Janne Blomqvist" wrote in message
... In article , Bob Fry wrote: Other questions: Doesn't ethanol have less energy / volume than gasoline? Yes, it's heating value is about 2/3 that of gasoline. : When oil supplies dwindle, the price will increase. At the same time, more efficient ways of biofuel production are developed. Question...how does the specific energy of corn oil compare with Jet-A1 run in a diesel engine? Tesco Supermarkets here in the UK now sell an "Ecodiesel"...it has all of 5% biodiesel and costs 1p a litre more than their city (reduced sulphur) diesel. Paul |
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In article , Paul Sengupta wrote:
"Janne Blomqvist" wrote in message ... In article , Bob Fry wrote: Other questions: Doesn't ethanol have less energy / volume than gasoline? Yes, it's heating value is about 2/3 that of gasoline. : When oil supplies dwindle, the price will increase. At the same time, more efficient ways of biofuel production are developed. Question...how does the specific energy of corn oil compare with Jet-A1 run in a diesel engine? I guess you mean biodiesel, which is produced from vegetable oils such as soy, rapeseed or from animal fats. Ethanol is produced from corn, but I've never heard about "corn oil". The (higher) heating value of fuels is approximately (quick googling, correct if I'm wrong) kerosene (Jet A-1) 46 MJ/kg diesel 46.1 MJ/kg gasoline 48 MJ/kg ethanol 29.7 MJ/kg biodiesel 40 MJ/kg Tesco Supermarkets here in the UK now sell an "Ecodiesel"...it has all of 5% biodiesel and costs 1p a litre more than their city (reduced sulphur) diesel. The reason jets use kerosene instead of diesel is that diesel freezes at higher temperatures than kerosene. Biodiesel is even worse in this regard. Not nice if your tanks freeze solid on a high altitude flight.. ![]() See http://www.biodiesel.org/pdf_files/Cold%20Flow.PDF and http://www.biodiesel.org/markets/pre...tingReport.pdf -- Janne Blomqvist |
#8
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![]() Janne Blomqvist wrote: I guess you mean biodiesel, which is produced from vegetable oils such as soy, rapeseed or from animal fats. Ethanol is produced from corn, but I've never heard about "corn oil". Corn oil falls into the vegetable oils category and could be used in biodiesel production. It's common in American supermarkets and apparently can also be found in Britain (since Paul is there). George Patterson If you want to know God's opinion of money, just look at the people he gives it to. |
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![]() The reason jets use kerosene instead of diesel is that diesel freezes at higher temperatures than kerosene. New Hampshire trailers and backwoods houses often have a 55-gallon oil drum on stilts out back. It's filled with kerosene. If you try the same thing with heating oil, it turns to sludge on some brisk morning, and the stove goes out. Not every winter, but maybe one in five. That would suggest 15 below to me. My father-in-law learned the truth of this when he moved the oil tank outside to make room for a cellar workshop. During the great Arab Oil Embargo (1975? whenever) a friend bought a VW with a diesel engine. He lived farther down the road than we did. One morning here he comes, pushing the VW, which he rolled into our drive and hitched the rest of the way to school. It happened several times that winter, which was a cold one. So I reckon diesel gets sludgy at an even higher temp than my father-in-law's outside fuel-oil tank. all the best -- Dan Ford email: (put Cubdriver in subject line) The Warbird's Forum www.warbirdforum.com Expedition sailboat charters www.expeditionsail.com |
#10
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On Wed, 18 Aug 2004 09:09:53 +0300 (EEST), Janne Blomqvist
wrote: If it could be done competetively the agricultural industry wouldn't need massive government subsidies, would it? For "industry," read Archer Daniels Midland. One company, one hand in the taxpayer's pocket. (Well, I suppose the farmers that ADM buys the corn from are also part of the "industry.") all the best -- Dan Ford email: (put Cubdriver in subject line) The Warbird's Forum www.warbirdforum.com Expedition sailboat charters www.expeditionsail.com |
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