At 11:54 AM 1/2/2007 -0700, Paul wrote:
>
>on a related note, I recall a mention in the prior thread re: piping
>adding to volume of stored air in tank...
>
>I did a diddy with EXCELL...think i got it right..came up with
>
>
>Pipe ID Vol / 100 ft ft / gal
>[inch] [cu ft] [gals]
>
>0.50 0.14 0.02 5486
>0.75 0.31 0.04 2438
>1.00 0.55 0.07 1372
>1.25 0.85 0.11 878
>1.50 1.23 0.16 610
>
>
>If i did this correctly (somebody please verify for us), then 200 ft of
>3/4 in pipe adds 0.08 gallons of air storage;
>
>or, you'd need over 5000 ft of pipe to add one gal of air storage. at $2/
>ft, roughly, that's $10,000 of pipe for a gallon of air....
Not too sure how you set got your figures, but I think they are a little off.
I just went out and measured a Gal. can of lacquer thinner. The can measures:
Inches Ft
Hight - 9.5 .79666
Width - 7 .58333
Depth - 4 .33333
Volume of a rectangle
V = L * W * D
V = .7966 * .5833 * .333 = .158 Cu Ft.
----
Given a Pipe of 1" Dia. or .0833 Ft.
Area = Pi * R^2
A = 3.14 * (.0833/2)^2
A = 3.14 * .04165^2
A = 3.14 * .0017347
A = .005447 Sq Ft
The cross sectional area of a 1" pipe is about .005447 Sq ft.
So if a gal is .158 Cu Ft
-----
Now setting up a ratio
.158 Cu ft 1 Gal
----------- = ---------
.005447 Sq Ft x
we get x = .005447 Sq ft * 1 Gal
------------
.158 Cu Ft
x = .0344 Gal
--------
ft
Or about 29 Ft/ gal
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va
Phone: (757) 495-8229
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