High Seas wrote:Ican - aren't you a pilot? Wondering here about your comments (if any) on this post of 2 pages back - it got lost under the dinosaur stampede
High Seas wrote:This lunacy is reaching the airlines now >
Quote:.............the biofuel-powered engine was using a blend of conventional jet fuel and biofuel: 80/20 in favor of the regular stuff. In total, then, just 5% of the 49,000-lb (22,000 kg) fuel load consisted of the novelty: a special mix of coconut oil and oil from the Brazilian babassu plant..
http://www.time.com/time/health/article/0,8599,1717009,00.html
> ever as scientists prove conclusively that palm / coconut oil causes more than 400 years' jet fuel damage to the planet - you can't make up that stuff!
Quote:Draining and clearing peatlands in Malaysia and Indonesia to grow palm oil emits so much CO2 that palm biodiesel from those fields would have to be burned for more than 420 years to counteract it.
http://online.wsj.com/article/SB120241324358751455.html?mod=googlenews_wsj
High Seas, the following two excerpts from the links you provided pretty well identify the madness surrounding the quest for biofuels.
Regarding the first excerpt, I flew a Learjet 25D like this one back in the 1990s:
http://www.jetphotos.net/viewphoto.php?id=6058358
It burned about 300 gallons of Jet A (mostly kerosene) per hour and flew enroute at 41,000 to 51,000 feet. It is a
tad cold up there. :wink:
I doubt that
coconut oil would remain liquid at those altitudes unless some of the exhaust were drawn off to heat the Learjet's
coconut oil while enroute. That of course would require more
coconut oil to be burned per hour.
Boeing 747s fly about as high, so at those altitudes the 747 would also have to heat its
coconut oil while enroute.
Quote:
http://www.time.com/time/health/article/0,8599,1717009,00.html
The fuel Virgin used Sunday required no equipment modifications at all; the plane flew to 25,000 feet (7,600 m) without incident; and the environmental benefits seem clear, at least once the fuel is loaded onto the plane. Internal company testing suggests the biofuel, when burned, releases just half the emissions of conventional jet fuel.
This second excerpt is a better reason for avoiding biofuels.
Quote:
http://online.wsj.com/article/SB120241324358751455.html?mod=googlenews_wsj
While the U.S. and others race to expand the use and production of biofuels, two new studies suggest these gasoline alternatives actually will increase carbon-dioxide levels.
A study published in the latest issue of Science finds that corn-based ethanol, a type of biofuel pushed heavily in the U.S., will nearly double the output of greenhouse-gas emissions instead of reducing them by about one-fifth by some estimates. A separate paper in Science concludes that clearing native habitats to grow crops for biofuel generally will lead to more carbon emissions.
Besides, where I live, the cost of an ear of corn has increased from about 20 cents to a dollar, just so we can increase the CO2 density in the ocean and atmosphere.