ransley wrote:
On Jul 22, 1:07 pm, harry wrote:
On Jul 21, 11:57 pm, George wrote:





harry wrote:
On Jul 20, 4:04 pm, George wrote:
Bruce in alaska wrote:
In article ,
The Daring Dufas wrote:
By the way, correct me if I'm wrong
but isn't jet fuel blended with additives to prevent gelling or microbe
infestation since jet fuel is often exposed to environmental extremes?
TDD
Nope, "Jet Fuel" as you call it is JetA50, and is the same thing a #1
Diesel, Home Heating Oil, and a few other names. The difference is,
that to be classed JetA50, and sold for Aviation Fuel, it MUST be
Filtered to FAA Spec, and be within the Specific Gravity, FAA Spec.
So, what the Distributer does, is he has only one Grade of #1 Diesel in
his tanks and when he pumps it for Transport to a customer, it goes thru
a different set of filtering for Aviation, than for Home Heating, or #1
Diesel, but it all comes from the SAME Tank.
My buddy has a liquid fuels business and I have seen the tanks and
pumping systems at multiple fuel dumps and they all had a totally
separate tank for Jet A if Jet A was delivered from that facility. In my
area there are two huge fuel dumps but the Jet A used at the local
airports is trucked in on transports from another state. Also there
isn't a tank called "#1 diesel". They have multiple tanks for ULSD and
LSD and kerosene.
With #2 Diesel, in cold
climates, they have what is called "Winter Mix" where the Distributer
will mix #1 and #2 Diesel, to lower the GellPoint of the fuel when
loading the Truck or Barge, for deliveries starting about August, and
increase the Ratio of #1 to #2 the farther North and away from the coast
the fuel is destine for. For Gasoline, the distributer will have an
"Additive Package" that they add to the Tank when dispatching a Load,
designed for the prospective customer.
It is more complicated than that. Certain additives are required and
certain additives are optional. They have an array of injector pumps
that meter in the additives when the truck is on the loading rack
according to what the customer purchased.
Many times Shell, Chevron, and
Mobile Gas Stations, will get their fuel from the same Distributer or
supplier and the only difference in the fuel is the "Additive Package"
put in, as the basic fuel, ALL COMES FROM THE SAME TANK. Depends on who
owns the Refinery, or where the Distributer bough his fuel from, the
last time. I have seen the same truck at two or three different Brand
Gas Stations, in town, on the same day, delivering fuel. the distributer
is 250 miles away, so you know they didn't fill the truck three times
that day.
All truck tankers have bulkheads to form multiple compartments. That
adds strength and limits spillage in case the tanker is damaged and it
also allows them to haul different product in each compartment if they want.
You can add paraffin (kerosine) to diesel to stop it gelling in cold
weather. (Mix thoroughly).
I think maybe you meant add kerosene to lower the amount of parafin?
Parafin is what is responsible for the gelling effect.
As well as visible water in fuel there can be dissolved water. For
most applications this doesn't matter. However in extremely low
temperatures ice can form so blocking small jets/apertures. This
can't be filtered out but there is a filterlike device that chemically
removes dissolved water in fuel. They use them on airfields, usually
adjacent to the regular filters. Ocassionally you see a combined
device.
What you call kerosine in the USA we in the UK call paraffin.
Like hoods & bonnets. Bumpers & fenders. Trunks & boots. :-)- Hide quoted text -

- Show quoted text -

And when the kids in school ask for a rubber nobody stares, it means
eraser

In the U.S., "rubbers" used to commonly mean "rubber overshoes".

TDD