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Re: GFX vs home brew - Page 22

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Posted by Solar Flare on April 19, 2006, 2:51 am

Hit the reject button to get the needle back.

Posted by nicksanspam on April 19, 2006, 7:57 am

Greywater might enter and leave via the upper vertical arm of a 4" PVC T
at each end of the corrugated drainpipe spiral. Fresh water might enter
and leave via the ends of the Ts.


Posted by dold on April 19, 2006, 6:22 pm
 In alt.solar.thermal nicksanspam@ece.villanova.edu wrote:

Ah, you're not counting those Ts as part of the height of the unit, because
it disappears magically into the rest of the plumbing.  But the unit and
it's accompanying plumbing cannot exist in a 4" high space.

Clarence A Dold - Hidden Valley (Lake County) CA USA  38.8,-122.5

Posted by nicksanspam on April 15, 2006, 7:46 pm

The 4" tall spiral hung under a basement ceiling would be about 7'
in diameter.  The 6' tall coil would occupy a 2.7' floor circle.
It seems simpler to install and might have better stratification.

10 PI=4*ATN(1)
20 D=4.25'pipe OD (inches)
30 L0'pipe length (feet)
40 DI=2'coil ID (feet)
50 DO=DI+2*D/12'coil OD (feet)
60 CI=PI*DI'inner circumference (feet)
70 NT=L/CI'number of turns
80 H=NT*D/12'coil height (feet)

 4.25          2             2.708333      15.91549      5.636738

10 PI=4*ATN(1)
20 D=4.25'pipe OD (inches)
30 L0'pipe length (feet)
40 A=D*L/12'pipe area (ft^2)
50 DI=2'flat spiral ID (feet)
60 DO=2*SQR(A/PI+(DI/2)^2)'spiral OD (feet)
70 NT*(DO-DI)/2/D'number of turns

 4.25          2             7.006704      7.068288


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