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#131
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On Thu, 29 Sep 2005 21:07:09 -0700, cjcampbell wrote:
expensive than gasoline. Although it is based on a renewable resource, the fact is that the resource is not nearly large enough to meet demand should it become mandated, meaning that costs will soar. Automobile drivers might be able to live with these problems, but aircraft owners would find them unacceptable. Since almost all ethanol comes from corn, actually costs more to produce (or roughly equal using the most modern and advance technology we have) than what it can be sold for. As long as ethanol is produced from corn crops, ethonol will remain a government hand out to farmers. There is no way, based on current corn-ethanol conversion technology, corn makes any economical sense at all. This is no surprise this is happening in the middle of corn country. These moves show just how corrupt the representatives in Iowa really are. They've been trying to do stuff like this for over a decade...probably a lot longer even... Greg |
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On Tue, 27 Sep 2005 18:45:48 -0500, Dan Engleman wrote:
So......my not so valuable opinion is that we should encourage all our legislators to pass legislation requiring us to be energy independent within a few years. Ethanol is a large part of that. Only if you want to pay more for fuel. Ethanol makes absolutely no economical sense at all. Ethanol always has been about politics, plain and simple. Our great goverment pays farmers to grow corn to make ethanol. It then takes more energy to produce ethanol than what we get out of it. Then, they turn around and sell it, at a premium price no less. Proponents of corn-ethanol expansion fall into three categories. One, the uninformed. Two, farmers. Three, politicians that cater to farms. Building an energy economy on corn-ethanol makes as much sense as building an energy economy on fusion. At least fusion *may* pay off one day. On the other hand, if they want to shift America's corn growers to hemp...then I'll shutup and let them do something that might actually make sense. A typical hemp crop (which is not the same thing as pot; you can't get high from it) yields roughly 3x more per year of ethanol than what corn does. That makes it roughly 1-2 times more profitable and requires no government handouts. Hemp does not require nearly as much water as corn, making it drought resistant. Can you imagine a drought hitting the US and our fuel prices going up 10x? That's the future of a corn-based fuel economy. Hemp is insect resistant and requires no insecticides; unlike corn, which requires a lot. Hemp can make industrial oils and lubricants, clothes, and of course rope. Hemp can be eaten, and can be used as a food filler. Hemp-ethanol does not contribute to carbon emissions anywhere near the same degree corn-ethanol does. This is because you actually get more energy out of a hemp-ethanol based economy than you do out of a corn-ethanol economy. Surprising, hemp can replace corn in almost every way, with on possible exception, flavor. I have no idea how hemp oils compare to corn oils in flavor. Greg |
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On Thu, 29 Sep 2005 13:50:45 +0000, Dylan Smith wrote:
You can't really replace natural gas plants with nuclear plants. Nuclear plants provide base load power (they can't easily be throttled) for the continuous supply you always need. Traditional nuclear plants are "throttled" by controlling the reaction. As demand goes down, the reaction is slowed, which produces less heat, creates less steam, and lowers the net energy production. In most nuclear reactors, this is done via the "control rods". By throttling the nuclear reaction, they also save fuel and reduce wear-n-tear on the associated turbines. http://en.wikipedia.org/wiki/Nuclear_control_rod http://science.howstuffworks.com/nuclear-power3.htm Greg |
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Where does all this hemp info come from?
Patrick student SP aircraft structural mech "Greg Copeland" wrote in message news ![]() On Tue, 27 Sep 2005 18:45:48 -0500, Dan Engleman wrote: So......my not so valuable opinion is that we should encourage all our legislators to pass legislation requiring us to be energy independent within a few years. Ethanol is a large part of that. Only if you want to pay more for fuel. Ethanol makes absolutely no economical sense at all. Ethanol always has been about politics, plain and simple. Our great goverment pays farmers to grow corn to make ethanol. It then takes more energy to produce ethanol than what we get out of it. Then, they turn around and sell it, at a premium price no less. Proponents of corn-ethanol expansion fall into three categories. One, the uninformed. Two, farmers. Three, politicians that cater to farms. Building an energy economy on corn-ethanol makes as much sense as building an energy economy on fusion. At least fusion *may* pay off one day. On the other hand, if they want to shift America's corn growers to hemp...then I'll shutup and let them do something that might actually make sense. A typical hemp crop (which is not the same thing as pot; you can't get high from it) yields roughly 3x more per year of ethanol than what corn does. That makes it roughly 1-2 times more profitable and requires no government handouts. Hemp does not require nearly as much water as corn, making it drought resistant. Can you imagine a drought hitting the US and our fuel prices going up 10x? That's the future of a corn-based fuel economy. Hemp is insect resistant and requires no insecticides; unlike corn, which requires a lot. Hemp can make industrial oils and lubricants, clothes, and of course rope. Hemp can be eaten, and can be used as a food filler. Hemp-ethanol does not contribute to carbon emissions anywhere near the same degree corn-ethanol does. This is because you actually get more energy out of a hemp-ethanol based economy than you do out of a corn-ethanol economy. Surprising, hemp can replace corn in almost every way, with on possible exception, flavor. I have no idea how hemp oils compare to corn oils in flavor. Greg |
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On Tue, 27 Sep 2005 21:33:20 -0400, Icebound wrote:
Since my post, I looked up those references to Brazil. THEY think it is cost effective. They are not doing it on corn. Cane sugar delivers much better results. Comparing Brazil's cane-ethanol efforts to the US' corn-ethanol effort is like comparing apples to rotten oranges...and paying extra for the oranges. ![]() Greg |
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On Wed, 28 Sep 2005 08:42:58 -0500, Gig 601XL Builder wrote:
"Sylvain" wrote in message ... Gig 601XL Builder wrote: The problem is if you use a gallon of Ethanol to produce 0.99 gallons of Ethanol all of the fuel produced will go into production and you are going to have to add .01 petro just to break even. then could it still have a practical use as a means of storing energy instead? I mean, producing ethanol using the output of say nuclear plants (ok, replace that with wind mills or whatever takes your fancy if 'nuclear' is against your religion); it was my (probably mistaken) understanding that the output of a nuclear plant could not easily be throttled up or down... any recommendation about some good reading on the subject of alternative fuel technologies? --Sylvain That is still not an efficient way to store energy. But how about this? We get rid of the of some of the unneeded regulations around Nuclear plants and move to a point where all electrical production is created with nuclear power and only use petro based fuel where they are the most effecient form of energy storage. i.e. cars, trucks, and airplanes. Nuclear is feared because the first thing it was used for was blowing up two cities in Japan. If the first use of electricity had been for the electric chair we'd have people out there chanting "No more watts." Thankfully Edison failed at his attempts! http://www.roadsideamerica.com/pet/topsy.html Edison was out to provide bad PR for Tesla (Westinghouse) new A/C form of electricity generation of power delivery. Edison thought if the showed the "horrors of A/C power compared to D/C" (paraphrasing), no one would use it. On a side note, many speculate that a fair number of Edison's inventions actually originated on Tesla's drawing board. When they parted ways, Edison did pretty much everything he could do to cause financial and personal woe on Telsa. Sadly, Edison was greatly successful in his attempts. Mysteriously, Tesla's lab burned down from unknown causes at the height on Edison's ire for Tesla. Seems Edison wasn't such a nice guy after all. Greg |
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Icebound wrote:
There was a time where science was independent, and above all that. If we don't get back to that state soon, every chance of progress will be scuttled by one more OWT masquerading as scientific fact. We are never going to get back to that state. Research has gotten so expensive that nearly every project lives off Federal funding. George Patterson Drink is the curse of the land. It makes you quarrel with your neighbor. It makes you shoot at your landlord. And it makes you miss him. |
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Jim,
You are right that we can attack the problem with scientific and enginering studies. My quick search showed quite a few articles relating to the subject 1. http://aiche.confex.com/aiche/2005/t...ram/P18201.HTM "Effects of Ethanol as a Fuel Additive on General Aviation Aircraft Fuel System Electrochemical Corrosion" If you have the time, you can read the whole dissertation here http://library.msstate.edu/etd/show....1072004-122317 then with your ingenuity and entrepreneural spirit, you can team up with Dr. Xie to market a X-ray/Whiskey mystery oil for gasohol use in GA aircraft ;-) 2. http://www.westbioenergy.org/dec2003/08.htm "Can 85 Percent Ethanol Gasoline Replace Aviation Fuel?" 3. http://www.westbioenergy.org/reports...55029final.htm "Airframe & Engine Modification and Testing Leading to FAA Certification of AGE-85" 4. http://www.ncga.com/ethanol/main/energy.htm "Ethanol-Based Aviation Fuel: Extensive research has shown that an aviation fuel blend containing 85 percent ethanol offers superior performance in prop-driven aircraft. The Federal Aviation Administration and several universities are conducting research on ethanol-based aviation fuel to determine the feasibility of the fuel as an alternative to the leaded aviation fuel currently being used." 5. http://bioproducts-bioenergy.gov/pdf...ts/26/z313.pdf "Engine endurance tests showed considerably less wear on ethanol than on avgas. Consequently, it is estimated that the Time Between Overhaul (TBO) in an engine on ethanol could easily be extended by 100% over avgas." Hai Longworth |
#139
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![]() RST Engineering wrote: RST Engineering wrote: Ethanol should not be approved for use in general aviation aircraft. It seems like a great idea, but the ethanol is highly caustic The hell you say. Your source? And to WHAT is it caustic? To fuming red nitric acid, WATER is caustic. and eats hoses Hasn't eaten a single hose on my Miata and it has been running on the stuff for ten years. Rubber hoses in recent models of cars have been made more resistant to ethanol. The vast majority of airplanes, however, were built before 1987. Then we'd better wake up and smell the coffee. I don't mind tilting at windmills, but when I've got legislators the country-wide embracing alcohol as a Good Thing(tm) I'd damned well better learn to live with it. Politics, my young friend. Get used to it. Replace the damned hoses if that's what it takes. Yeah, right. The scientific studies are wrong and the politicians are right. What sort of engineer are you, anyway? If you want to just bend over and let the politicians do whatever they want, fine. But don't call it science. and corrodes carburetors How? The chemical reaction between ethanol and steel/aluminum appears to be benign. Again, your source other than OWT? The chemical reaction between ethanol and steel/aluminum is not benign. I was able to turn up several papers documenting that ethanol was corrosive to aluminum, at the very lest. It also corrodes fuel injectors. OWT. Really? Here is a study that shows ethanol corrodes engines. http://age-web.age.uiuc.edu/faculty/qzhang/Publications/2005BT96(2)Hansen.pdf And this study shows that ethanol corrodes aircraft engines: http://library.msstate.edu/etd/show....1072004-122317 The automobile industry dealt with the problem by developing new automobiles. The aviation industry can, too, but there will always be a lot of legacy aircraft around that will not be able to handle ethanol. All the bombast and belligerence in the world will not make that problem go away. I might mention that Cecil Adams of the Straight Dope has a board of accredited scientists who check his columns. If it came down to his word vs. yours, I would have to go with his. You can belittle him all you want, but I suspect that the team that checked his column probably knows quite a bit more than you do. |
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On 2005-09-30, Greg Copeland wrote:
On Thu, 29 Sep 2005 13:50:45 +0000, Dylan Smith wrote: You can't really replace natural gas plants with nuclear plants. Nuclear plants provide base load power (they can't easily be throttled) for the continuous supply you always need. Traditional nuclear plants are "throttled" by controlling the reaction. As demand goes down, the reaction is slowed, which produces less heat, snip Yeah, sure they can - but they can't be throttled like a gas station, and that's why they are baseload power rather than brought up and down as demand fluctuates. You wouldn't run your entire electrical system off baseload generators, you'd still need powerplants that can be brought up and down quickly. -- Dylan Smith, Castletown, Isle of Man Flying: http://www.dylansmith.net Frontier Elite Universe: http://www.alioth.net "Maintain thine airspeed, lest the ground come up and smite thee" |
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