O2 filling

Dan wrote:

Would it be worth it in a non-turbo aircraft? (ie. 182, Comanche?) I
live out west and have been debating for a while.

Anyone know of a good place that fills tanks in the Phoenix area?


I have a normally aspirated aircraft and I live down here at sea
level. I regularly get up to 10,000 or so and sometimes higher.
I like having the portable system. Tank filling is hardly anything
and it doesn't need to be done that often. All of the oxygen
system vendors will top your tank off at Oshkosh (and probably
other shows) as well..

On Nov 17, 8:33 am, Ron Natalie wrote:
Dan wrote:
Would it be worth it in a non-turbo aircraft? (ie. 182, Comanche?) I
live out west and have been debating for a while.

Anyone know of a good place that fills tanks in the Phoenix area?

I have a normally aspirated aircraft and I live down here at sea
level. I regularly get up to 10,000 or so and sometimes higher.
I like having the portable system. Tank filling is hardly anything
and it doesn't need to be done that often. All of the oxygen
system vendors will top your tank off at Oshkosh (and probably
other shows) as well..

My tank usually only lasts one trip but I have 4 people breathing it
(I have an 'E' container which is a bit larger). I'm in California and
my normal Eastbound altitude is 13,500 in my non-turbo Mooney.
Anything lower than that is a bit scarry between down drafts and
dodging rocks. A normal trip is about 6 hours each way so about 12
hours on a tank with 4 breathing it.

However, it depends on where you fill it. If I fill in California I
get a good fill. If I fill in New Mexico I get much less because of
the altitude.

-Robert

Robert M. Gary schrieb:

However, it depends on where you fill it. If I fill in California I
get a good fill. If I fill in New Mexico I get much less because of
the altitude.

Huh???

You are kidding, right? The difference between an ambient of 15 psi and 10
psi on a 3000 psi fill isn't squat.

Jim



However, it depends on where you fill it. If I fill in California I
get a good fill. If I fill in New Mexico I get much less because of
the altitude.

-Robert

On Nov 18, 8:27 am, "RST Engineering" wrote:
You are kidding, right? The difference between an ambient of 15 psi and 10
psi on a 3000 psi fill isn't squat.

I"ve never gotten more than 2300lbs in New Mexico. They say its
because the ambiant pressure doesn't allow for a full fill. I usually
get about 2800lbs (as I recall) in California.

-Robert

It could depend on the type compressor. If it's a piston one,
compression ratio would set the maximum available pressure, and in NM
the pressure might be 23/28ths of that at sea level.



On Nov 18, 8:39 pm, "Robert M. Gary" wrote:
On Nov 18, 8:27 am, "RST Engineering" wrote:

You are kidding, right? The difference between an ambient of 15 psi and 10
psi on a 3000 psi fill isn't squat.

I"ve never gotten more than 2300lbs in New Mexico. They say its
because the ambiant pressure doesn't allow for a full fill. I usually
get about 2800lbs (as I recall) in California.

-Robert

Tina,

It could depend on the type compressor.


Compressor for? We're talking oxygen, not compressed air (I hope).

--
Thomas Borchert (EDDH)

Thomas, I would think some vendor, probably local, is either buying or
generating oxygen, and compressing it. Most likely it is being
compressed with a multistage positive displacement pump, and the
limiting pressure would be its compression ratio. I think (but am not
sure) most oxygen generators deliver low pressure oxygen, and that
would need to be compressed.

I fully admit my model could be wrong, but oxygen generators I know of
do not make deliver it at high pressure. One I know of delvers its
oxygen at something like 9 PSIG.




Tina,

It could depend on the type compressor.

Compressor for? We're talking oxygen, not compressed air (I hope).

--
Thomas Borchert (EDDH)