New fuel

In article , Paul Sengupta wrote:
"Janne Blomqvist" wrote in message
...
In article , Bob Fry wrote:
Other questions: Doesn't ethanol have less energy / volume than
gasoline?

Yes, it's heating value is about 2/3 that of gasoline.
:
When oil supplies dwindle, the price will increase. At
the same time, more efficient ways of biofuel production are
developed.

Question...how does the specific energy of corn oil compare with
Jet-A1 run in a diesel engine?

I guess you mean biodiesel, which is produced from vegetable oils such
as soy, rapeseed or from animal fats. Ethanol is produced from corn,
but I've never heard about "corn oil".

The (higher) heating value of fuels is approximately (quick googling,
correct if I'm wrong)

kerosene (Jet A-1) 46 MJ/kg
diesel 46.1 MJ/kg
gasoline 48 MJ/kg
ethanol 29.7 MJ/kg
biodiesel 40 MJ/kg


Tesco Supermarkets here in the UK now sell an "Ecodiesel"...it
has all of 5% biodiesel and costs 1p a litre more than their city
(reduced sulphur) diesel.

The reason jets use kerosene instead of diesel is that diesel freezes
at higher temperatures than kerosene. Biodiesel is even worse in this
regard. Not nice if your tanks freeze solid on a high altitude
flight..

See

http://www.biodiesel.org/pdf_files/Cold%20Flow.PDF

and

http://www.biodiesel.org/markets/pre...tingReport.pdf


--
Janne Blomqvist

Janne Blomqvist wrote:

I guess you mean biodiesel, which is produced from vegetable oils such
as soy, rapeseed or from animal fats. Ethanol is produced from corn,
but I've never heard about "corn oil".

Corn oil falls into the vegetable oils category and could be used in biodiesel
production. It's common in American supermarkets and apparently can also be found in
Britain (since Paul is there).

George Patterson
If you want to know God's opinion of money, just look at the people
he gives it to.

"G.R. Patterson III" wrote in message
...

Janne Blomqvist wrote:

I guess you mean biodiesel, which is produced from vegetable oils such
as soy, rapeseed or from animal fats. Ethanol is produced from corn,
but I've never heard about "corn oil".

Corn oil falls into the vegetable oils category and could be used in
biodiesel
production. It's common in American supermarkets and apparently can also
be found in
Britain (since Paul is there).

Yup, along with others such as the rapeseed oil and sunflower oil,
we use it to cook our chips (Fries for the Americans on here).

When "diluted" with some methanol it can be run quite successfully
in diesel cars.

http://news.bbc.co.uk/1/hi/wales/2310095.stm
http://news.bbc.co.uk/1/hi/wales/south_west/3104763.stm
http://www.vegoilmotoring.com/

A story on bioethanol from plant waste he
http://news.bbc.co.uk/1/hi/sci/tech/1975663.stm

Paul

The reason jets use kerosene instead of diesel is that diesel freezes
at higher temperatures than kerosene.

New Hampshire trailers and backwoods houses often have a 55-gallon oil
drum on stilts out back. It's filled with kerosene. If you try the
same thing with heating oil, it turns to sludge on some brisk morning,
and the stove goes out. Not every winter, but maybe one in five. That
would suggest 15 below to me. My father-in-law learned the truth of
this when he moved the oil tank outside to make room for a cellar
workshop.

During the great Arab Oil Embargo (1975? whenever) a friend bought a
VW with a diesel engine. He lived farther down the road than we did.
One morning here he comes, pushing the VW, which he rolled into our
drive and hitched the rest of the way to school. It happened several
times that winter, which was a cold one. So I reckon diesel gets
sludgy at an even higher temp than my father-in-law's outside fuel-oil
tank.


all the best -- Dan Ford
email: (put Cubdriver in subject line)

The Warbird's Forum www.warbirdforum.com
Expedition sailboat charters www.expeditionsail.com

Cub Driver wrote:

So I reckon diesel gets
sludgy at an even higher temp than my father-in-law's outside fuel-oil
tank.

Dunno if this is universally the case, but the heating oil sold in the Atlanta area
is #2 diesel. I expect that's the case pretty much everywhere, since there was some
talk a few years ago about dying one of them red to try to catch people who avoid
road taxes by filling up their cars from the heating oil tank.

I expect the VW quit at higher temperatures simply because the fuel lines for the
heaters are larger than those in the car.

George Patterson
If you want to know God's opinion of money, just look at the people
he gives it to.

"G.R. Patterson III" wrote in message
...

Cub Driver wrote:

So I reckon diesel gets
sludgy at an even higher temp than my father-in-law's outside fuel-oil
tank.

Dunno if this is universally the case, but the heating oil sold in the
Atlanta area
is #2 diesel. I expect that's the case pretty much everywhere, since there
was some
talk a few years ago about dying one of them red to try to catch people
who avoid
road taxes by filling up their cars from the heating oil tank.

Met a guy from up north sort of way when I was in Florida who
had a Fouga Magister. When he was at home, he ran it on heating
oil. I think he said he bought tankers full at a time at something like
$0.40 a gallon...this was a few years ago now.

You can run a diesel car on kerosene as long as the fuel pump can
handle lack of lubrication. Some airport vehicles here are run on
avtur (Jet-A) if they don't have to go on the public roads (fuel tax).

Paul

"Cub Driver" wrote in message
...

The reason jets use kerosene instead of diesel is that diesel freezes
at higher temperatures than kerosene.

New Hampshire trailers and backwoods houses often have a 55-gallon oil
drum on stilts out back. It's filled with kerosene. If you try the
same thing with heating oil, it turns to sludge on some brisk morning,
and the stove goes out. Not every winter, but maybe one in five. That
would suggest 15 below to me. My father-in-law learned the truth of
this when he moved the oil tank outside to make room for a cellar
workshop.

During the great Arab Oil Embargo (1975? whenever) a friend bought a
VW with a diesel engine. He lived farther down the road than we did.
One morning here he comes, pushing the VW, which he rolled into our
drive and hitched the rest of the way to school. It happened several
times that winter, which was a cold one. So I reckon diesel gets
sludgy at an even higher temp than my father-in-law's outside fuel-oil
tank.

Don't know about there, but here in the UK they add a certain amount
of kerosene to diesel in the winter to lower the freezing point.

Paul