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 that you'd build a storage tank out of pipe, but just to show that the
contribution is trivial.
>From prior threads, the metal pipes allow cooling of air, condensation of
water, drainage of the condensate to and end-point/ drain. I didn't see a
re-hash of this in the most recent thread, re: Chem-Aire. Black pipe
obvioulsy will rust, but ultimate weakening of the pipe from this loss is
up to an ME to post. I'd guess it's a few lifetimes before it's
significant. Copper seems to be ahead on the heat loss and rust
fronts...wish I'd bought some before the price went up.
Since I also read that cool/ DRY air is big deal (and it makes sense if
you think about it), I sketched up a zig-zag cooling section, made with
the copper pipe/ fin combo used for some baseboard heaters. don't know if
it needs a little fan (sooooo many left over from computer parts pile...)
to help it. We need an ME to calculate for us the right size of the
mini-cooler. I'd propose that it would especially usefull if going the
Chem-Aire route...
...awaiting your collective thoughts..
Paul
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