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As gas -- and corn -- prices creep ever higher, everyone in my great
State of Iowa is all ablush with talk of riches pouring in, thanks to ethanol production. They can barely contain their glee at this remarkable turn of economic fortune. (Remember, just a few years ago farmers here had one foot in the grave, and the other on a banana peel...) Thus, I feel like Don Quixote, tilting at windmills, trying to get a word in edgewise about the absurdity of it all. Of course, since subsidized ethanol production is the single greatest farm subsidy program in US history -- and since Iowa remains largely an agricultural society -- facing facts is not a popular passtime here. But it must be done, or our country is being led down the primrose path to perdition. The fact remains that converting corn into ethanol, for the purpose of fueling automobiles, is simply absurd. Here is a quote that sums it up nicely, IMHO: "Overall (farming, distillation), it takes 129,600 BTU to produce a gallon of EtOH (ethanol), but the energy value of a gallon of EtOH is only 76,000 BTU. In SI units [conversions in footnote 3]: it takes 45.7 MJ to produce a kilogram of EtOH, but the energy value of that kilogram of EtOH is 26.8 MJ." "There is thus a net energy loss of about 54,000 Btu for every gallon (18.9 MJ for every kilogram) of EtOH produced. Unlike the old joke about the tailor who claims he loses money on every suit, but stays in business by 'making up for it in quantity', there is no deception here. It's a losing proposition." You can read the whole article he http://www.energyadvocate.com/etohscam.htm Write your Congress Critters. The politicians are leading us down this path for purely political purposes, and it's up to us to stop it. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
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![]() "Jay Honeck" wrote in message ups.com... As gas -- and corn -- prices creep ever higher, everyone in my great State of Iowa is all ablush with talk of riches pouring in, thanks to ethanol production. They can barely contain their glee at this remarkable turn of economic fortune. (Remember, just a few years ago farmers here had one foot in the grave, and the other on a banana peel...) Are they still subsidized? If (if) they're making money growing and selling corn such that taxpayers don't have to subsidize their farms it seems like there's a general economic benefit in there. Still doesn't solve the oil problem. Brazil uses sugarcane, which the US could do on a smaller scale, but CNN is correct in that we can't grow enough corn to meet our own needs. -c |
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In article ,
"Gatt" wrote: "Jay Honeck" wrote in message ups.com... As gas -- and corn -- prices creep ever higher, everyone in my great State of Iowa is all ablush with talk of riches pouring in, thanks to ethanol production. They can barely contain their glee at this remarkable turn of economic fortune. (Remember, just a few years ago farmers here had one foot in the grave, and the other on a banana peel...) Are they still subsidized? If (if) they're making money growing and selling corn such that taxpayers don't have to subsidize their farms it seems like there's a general economic benefit in there. Still doesn't solve the oil problem. Brazil uses sugarcane, which the US could do on a smaller scale, but CNN is correct in that we can't grow enough corn to meet our own needs. Sugar cane has a higher sugar (and therefore energy) content than corn. Approximately 7-10 times the energy content of corn. A WSJ article this week reported that a US university has modified a grass that can be broken down without the use of acids and has an energy content 7 times greater than corn. Just think, everyone could plant their yards with this grass, mow and bag the clippings, have them picked up curbside and taken to the processing plant. Corn prices drop back down to food levels and more ethanol gets produced from our lawns. |
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![]() "john smith" wrote in message ... Just think, everyone could plant their yards with this grass, mow and bag the clippings, have them picked up curbside and taken to the processing plant. That would be huge. Could probably get a lot more citizens to sign on if we reactivated the term "Victory Garden." I wonder how much lawnmower fuel I could produce from my own grass compost. If every lawnmower-operating family or business did that, it really would be substantial. -c |
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![]() "john smith" wrote: Just think, everyone could plant their yards with this grass, mow and bag the clippings, have them picked up curbside and taken to the processing plant. Corn prices drop back down to food levels and more ethanol gets produced from our lawns. That sounds like a terrific idea, if you could get folks over their compulsion to have to have a manicured lawn. How high does it grow? How many times a year would you cut the stuff? I cut my lawn about 14 times/year. Reducing that to once or twice would sell me on the idea! -- Dan T-182T at BFM |
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On Thu, 19 Jul 2007 12:55:52 -0400, john smith wrote:
Sugar cane has a higher sugar (and therefore energy) content than corn. Approximately 7-10 times the energy content of corn. A WSJ article this week reported that a US university has modified a grass that can be broken down without the use of acids and has an energy content 7 times greater than corn. This: http://online.wsj.com/article/SB118403019523461642.html ? Searching on the name of the grass (Miscanthus X giganteus) provides quite a few additional links such as: http://bioenergy.ornl.gov/papers/mis...iscanthus.html But this is a specific example of a general trend that I hope we're seeing. Biotech is still a relatively new field. And it's still only just started to be directed to the idea of "fuel" over the past ten years or so (at least as far as I've seen). I think/hope we're going to see some interesting possibilities out of that area. This does suggest, though, that government fiddling with the market such that a "winner fuel" is chosen prematurely - esp. by the anti-scientists currently in the administration - would be a bad thing. While Brazil does seem to be doing well with sugar cane, our growth environment is significantly different. And I think it would be repeating a mistake to chose a fuel not easily/efficiently grown "at home". BTW, searching on this grass also brings one to links regarding other possible fuel "grasses". - Andrew |
#7
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![]() Jay Honeck wrote: "Overall (farming, distillation), it takes 129,600 BTU to produce a gallon of EtOH (ethanol), but the energy value of a gallon of EtOH is only 76,000 BTU. In SI units [conversions in footnote 3]: it takes 45.7 MJ to produce a kilogram of EtOH, but the energy value of that kilogram of EtOH is 26.8 MJ." Does anyone know how much energy it takes to pump crude out of the ground, ship it to a refinery, and the refine it to make a gallon of gas? I don't, just asking for a comparison. |
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On Thu, 19 Jul 2007 10:04:46 -0600, RomeoMike
wrote: Jay Honeck wrote: "Overall (farming, distillation), it takes 129,600 BTU to produce a gallon of EtOH (ethanol), but the energy value of a gallon of EtOH is only 76,000 BTU. In SI units [conversions in footnote 3]: it takes 45.7 MJ to produce a kilogram of EtOH, but the energy value of that kilogram of EtOH is 26.8 MJ." Does anyone know how much energy it takes to pump crude out of the ground, ship it to a refinery, and the refine it to make a gallon of gas? I don't, just asking for a comparison. It's surprisingly inefficient, but using the same stuff for power makes it relatively inexpensive. I looked it up a while back and as I recall it was "cost of producing alcohol compared to processing crude oil into gas" The biggest problem I found is there is so much conflicting information out there that it takes time (a lot of it) to filter out what is and is not both correct and up-to-date. Even where studies are undertaken you really need to know the criteria under which the studies were conducted. *Probably* one of the least expensive fuels is hydrogen produced by gasification of coal, but that process is not clean and produces a tremendous amount of CO2 as a byproduct. OTOH the byproducts and be recovered and sold while the CO2 can be sequestered. |
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On Fri, 20 Jul 2007 18:28:14 -0400, "Roger (K8RI)"
wrote: On Thu, 19 Jul 2007 10:04:46 -0600, RomeoMike wrote: Jay Honeck wrote: "Overall (farming, distillation), it takes 129,600 BTU to produce a gallon of EtOH (ethanol), but the energy value of a gallon of EtOH is only 76,000 BTU. In SI units [conversions in footnote 3]: it takes 45.7 MJ to produce a kilogram of EtOH, but the energy value of that kilogram of EtOH is 26.8 MJ." Does anyone know how much energy it takes to pump crude out of the ground, ship it to a refinery, and the refine it to make a gallon of gas? I don't, just asking for a comparison. It's surprisingly inefficient, but using the same stuff for power makes it relatively inexpensive. I looked it up a while back and as I recall it was "cost of producing alcohol compared to processing crude oil into gas" The biggest problem I found is there is so much conflicting information out there that it takes time (a lot of it) to filter out what is and is not both correct and up-to-date. Even where studies are undertaken you really need to know the criteria under which the studies were conducted. *Probably* one of the least expensive fuels is hydrogen produced by gasification of coal, but that process is not clean and produces a tremendous amount of CO2 as a byproduct. OTOH the byproducts and be recovered and sold while the CO2 can be sequestered. Interesting data point: "ChevronTexaco has installed a solar photovoltaic facility called Soalrmine to help power oil-field operations near Bakersfield, Calif. The grid-tie project comprises 4800 flexible, current-producing solar panels, each about 1.3 feet wide by 18 feet long, mounted on metal frames. "At 500 kW, Solarrmine is one of the largest photovoltaic installations in the U.S. and the largest array of flexible, amorphous-silicon solar technology in the world. Solarmine covers six acres, enabling it to take advantage of Uni-Solar's amorphous-manufacturing economies of scale. (ChevronTexaco owns 20% of Uni-Solar's parent company, ECD.) " That's from an article I wrote in 2004. I don't know the current status. Don |
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On Fri, 20 Jul 2007 17:11:54 -0700, Don Tuite
wrote: On Fri, 20 Jul 2007 18:28:14 -0400, "Roger (K8RI)" wrote: On Thu, 19 Jul 2007 10:04:46 -0600, RomeoMike wrote: Jay Honeck wrote: "Overall (farming, distillation), it takes 129,600 BTU to produce a gallon of EtOH (ethanol), but the energy value of a gallon of EtOH is only 76,000 BTU. In SI units [conversions in footnote 3]: it takes 45.7 MJ to produce a kilogram of EtOH, but the energy value of that kilogram of EtOH is 26.8 MJ." Does anyone know how much energy it takes to pump crude out of the ground, ship it to a refinery, and the refine it to make a gallon of gas? I don't, just asking for a comparison. It's surprisingly inefficient, but using the same stuff for power makes it relatively inexpensive. I looked it up a while back and as I recall it was "cost of producing alcohol compared to processing crude oil into gas" The biggest problem I found is there is so much conflicting information out there that it takes time (a lot of it) to filter out what is and is not both correct and up-to-date. Even where studies are undertaken you really need to know the criteria under which the studies were conducted. *Probably* one of the least expensive fuels is hydrogen produced by gasification of coal, but that process is not clean and produces a tremendous amount of CO2 as a byproduct. OTOH the byproducts and be recovered and sold while the CO2 can be sequestered. Interesting data point: "ChevronTexaco has installed a solar photovoltaic facility called Soalrmine to help power oil-field operations near Bakersfield, Calif. The grid-tie project comprises 4800 flexible, current-producing solar panels, each about 1.3 feet wide by 18 feet long, mounted on metal frames. "At 500 kW, Solarrmine is one of the largest photovoltaic installations in the U.S. and the largest array of flexible, amorphous-silicon solar technology in the world. Solarmine covers six Amorphous-Silicon in what configuration? Deposition on a substrate or polycrystalline? Hemlock Semiconductor Corporation (HSC), affectionately known around here as Hemi Semi...just finished up a major expansion program (they were the world's largest producer of polycrystalline Silicon well before that expansion) announced a one Billion Dollar expansion that should again double the plant's capacity. The problem for us using solar (active and passive) up here, contrary to many claims made by the state and tourist bureau, is lack of sun coupled low cost electricity. With electricity costing about 8 cents per KWH or 10 cents with all surcharges, being 43.37N, in a cloudy area, and no subsidy we aren't even on the pay-back charts. California OTOH with peak charges of just shy of 40 cents per KWH and a subsidy of near 50% last I heard, has a reasonable payback time. Up here an installation would run about twice the cost of one in California and we receive no subsidy. That makes the $30,000 to $50,000 for an installation just a tad steep. acres, enabling it to take advantage of Uni-Solar's amorphous-manufacturing economies of scale. (ChevronTexaco owns 20% of Uni-Solar's parent company, ECD.) " That's from an article I wrote in 2004. I don't know the current status. Don |
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