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>Hi Christopher,
>
>You wrote:
>
>>This is a short note that the programmer sent to me with the beta code for
>>the gas mixing program.
>
>> 4. the basis of calculations will be pumping the proper number of
>> moles of each gas starting with O2 or N2 depending on the
>> percents required. the program will calc the appropriate
>> amount of O2 or N2 and the remainder of air
>>
>
>I realize that I have no idea what your program does or what it outputs.
>If I as a diver wants a mix of say 50% O2 and 50% N2 in a 80 cu feet
>tank and a final pressure of 3000 psi (20'C) could I use your program
>to "do" this ?
>If yes, can I do it without counting molecules ?
> If yes, can I do it by monitoring the temp and the
> fill pressures alone ?
> If yes, please do run the program on two tanks
> for me, one 80 cu feet and one 40 cu feet
> and tell me if the pressures (same temp)
> differ.
>
>john
John:
Here is the result of a 50/50 Nitrox fill into a Aluminum 80 to 3,000psi
Luxfer Aluminum 80 has an internal volume of 701 cubic inches (new), which
is about 11.5 litres.
3000psi is about 204.1atm
---
Fill Data
Moles True Pres Temp Ideal Press
(atm) ('C) (using ideal gas law)
O2 30.2 64.9 32.3 74.9
AIR 52.0 205.0 66.1 204.1
Pumping Data, fill your cylinder in this sequence to these pressures.
Press Press Temp Temp
(atm) (psi) ('C) ('F)
O2 64.9 935.5 32.3 90.1
AIR 205.0 3014.0 66.1 150.9
After cooling back to 20' C,
pressure should fall to 177.2atm, 2604.2psi.
----
Christopher M. Parrett, President, Abysmal Diving Inc.
Makers of ABYSS, Advanced Dive Planning Software.
6595 Odell Place, Suite G. Boulder CO, 80301
Ph, 303-530-7248, Fx, 303-530-2808
ftp://abysmal.com/users/abysmal http://www.emi.net/gulfstream/abyss/abyss.html
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