Here in Brazil , the research that had been realized for military to replace Jet fuel using BioD in 1980 was done with positive results, but the details are not much known as less study were conducted at the time .
By using low molecular fatty acids ester ,the BioD need to be engineered to be very good additive.Surely there are problems regard to viscosity.Small jet here are able to run with alcohol fuel and hence BioD will be also positive , may not be 100 percent.
sd
Pannirselvam
Brazil
On 9/4/05, Alan Petrillo <[EMAIL PROTECTED]> wrote:
Greg and April wrote:
>The short answer is no.
>
>
The short answer is _yes_. Baylor University did some testing with B20
in their Beech King Air 90, and found that it did just fine.
The report was available at the biodiesel.org website for a while, but I
can't find it just now. A Google search of the site produced this:
http://www.biodiesel.org/resources/reportsdatabase/reports/gen/19981001_gen-106.pdf
Purdue University also did some testing on aviation fuel, and the report
is available here:
http://www.biodiesel.org/resources/reportsdatabase/reports/gen/19950601_gen-144.pdf
Keep in mind, turbines are, almost by definition, multifuel engines. As
long as it doesn't overheat their burn units turbines don't care what
they're running on. You should see the list of alternate fuels for the
OH-58 scout helicopters I flew in the Army!
>The long answer is, BioDiesel does not have to BTU's of jet fuel
>
No, it doesn't have the specific heat of jet fuel, but it's close enough
that it makes little difference operationally.
>( jet fuel
>is a highly refined cozen to jet fuel with allot of BTU's per gal ),
>
Did you by any chance mean "kerosene"?
Jet-A is high grade kerosene. Keep in mind, kerosene comes in many
flavors, and jet fuel is only one of them.
>nor
>does it have the ability to take the low temperatures that jet fuel would
>encounter at altitude.
>
>
This could be taken care of with a properly effective antigel agent.
>These things are workable, but, then you have to carry more fuel, and less
>cargo, and heated fuel tanks and fuel lines. This adds weight and costs
>to every aircraft, that is unacceptable.
>
Many aircraft already have fuel heaters in their fuel lines to prevent
fuel icing. The real problem is to prevent the fuel gelling in the
tanks. Some heat already gets into the fuel tanks in many airliners
because they use the fuel tanks as a heat sink for the airconditioning
systems. I think only a good antigel agent would solve this completely,
though.
>Jet travel is also one of the
>least efficient forms of transportation there is.
>
That depends on how you look at it. If you consider it in terms of
passenger seat miles per gallon then it comes out around 24mpg, IIRC,
which beats most SUV's.
I did have a link to an article which went into this much more in depth,
but I have lost it.
Don't forget, in the airline industry fuel efficiency means profits.
>Using biodiesel would
>only make it more inefficient.
>
>
Maybe. But at least it would be using less petroleum.
AP
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--
Pagandai V Pannirselvam
Universidade Federal do Rio Grande do Norte - UFRN
Departamento de Engenharia Química - DEQ
Centro de Tecnologia - CT
Programa de Pós Graduação em Engenharia Química - PPGEQ
Grupo de Pesquisa em Engenharia de Custos - GPEC
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32171557
Telefone(fax) ( 84 ) 3215-3770
residencia 32171557
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