>The Energy Balance of Corn Ethanol: An Update > >This July 2002 study by the United States Department of Agriculture >reviews a range of studies conducted since the late 1970s that have >estimated the net energy value (NEV) of corn-derived ethanol. >Variations in data and assumptions used among the studies have >resulted in a wide range of estimates. This study identifies the >factors causing this wide variation and develops a more consistent >estimate. The report concludes that the NEV of corn ethanol has been >rising over time due to technological advances in ethanol conversion >and increased efficiency in farm production. The report shows that >corn ethanol production has an energy output:input ratio of 1.34. >This means that the production of corn-ethanol is energy efficient, >in that it yields 34 percent more energy than it takes to produce it, >including growing the corn, harvesting it, transporting it, and >distilling it into ethanol. > > http://www.usda.gov/oce/oepnu/aer-813.pdf
Hi Motie Don't do it! (Unless you already have.) That's the one we have reffed at our site, with the other energy-balance stuff refuting Pimentel and so on: http://journeytoforever.org/ethanol_energy.html Is ethanol energy-efficient? I went browsing round the main page of the Office of Energy Policy and New Uses: http://www.usda.gov/oce/oepnu/ ... and found another one: The Energy Balance of Corn Ethanol: An Update http://www.usda.gov/oce/oepnu/aer-814.pdf 813 is 5.2 Mb, 814 is only 176 kb! But they seem to be exactly the same. Finally I found the reason: 813 has a high-resolution 5 Mb cover page. No info, just a picture, a logo, and the title. 5 Mb. Why I hate pdf's (or one of the reasons anyway). 814's cover is the same, but 100 kb. I think I could probably fit it into 20 kb without any loss. There's also a press release on the report: http://www.usda.gov/news/releases/2002/08/0322.htm USDA Report Finds Ethanol Is Energy Efficient Best Keith Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
