Generator tower - Page 2

 

On 25 Sep 2005 13:47:55 -0400, nicksanspam@ece.villanova.edu wrote:


Perhaps you missed this earlier in the thread
http://www.windenergy.com/AIR_Land_Tower_45_Manual_II.pdf   It's a
detailed example of a simple and recommended tilting tower. Note the
basic layout on page 1, the pipe sizes on pages 7 and 8, and the gin
pole illustration on page 22.

Here's how I did a quicky temporary one for testing - one stick of 2"
planted in concrete. That pipe had 4 holes drilled near the top, with
nuts welded over the holes. A 1.5" stick was telescoped inside.
Standing on a ladder, I pulled the inner pipe out hand-over-hand, and
then used bolts to clamp it in place. Total height was over 30', and
even without guy wires it was OK in high winds. It did sway a bit
though, and I wouldn't recommend the method to anyone.

I've seen quite a few Airs on even flimsier homemade permanent towers,
and surprisingly they seem to do OK.
 
Wayne

 

do a google search for voltage drop calculator and plug in the numbers
and see what comes out.

as for ground size, it sort of depends on what ground wire you are
talking about.  there are several green wires commonly called grounds,
and the code specifies the sizes for them differently.

 


"33 feet of 1-1/2" pipe sounds like an educational experience in how
expensive being cheap can be waiting to happen. Probably not waiting
long"

HMMM...Cheap....That is NOT my intent nor did it even cross my mind. How
about...to design a structure that is not wastful or overbuilt and will
withstand the rigors if its enviroment. Sounds like you subcribe to "Lets
build from pig iron and stone, thicker and heavier MUST be
better"...Aircraft with compoments that can be torn apart by
hand...NAAH...pig iron and stone. Spacecraft so fragil they will not
withstand earth gravity...NAAH...pig iron and stone. This was just a comment
to the group to stir thought perhaps provoke an intelligent discussion. I
will now proceed to recearch and calculate the safe limits of a guyed 1-1/2"
sch. 40 galv. pipe tower...and leave you to your "pig iron and stone"

 

Jack Russell wrote:


You dont supply very much information so let me guess.
400 watt? 4 One Hundred Watt light bulbs? Or did you mean 4kw?
4kw at 12 volts DC? Thats about ~333 amps and 150 ft one way, so your gong
to need a copper wire about half as big as your arm  - at least 400mcm in
order to carry the load and keep voltage drop reasonable.
 If you meant to generate at 240 volts AC then now thats a different story.
Now your lookin at about ~17 amps and a #10 will handle it.
 Just in case you really meant 400 watts at 12VDC then thats about 34 amps
and you can get away with #4 copper
Eric

 

 



Welcome to the world of small-scale homepower. The Air-X is a 400W
(claimed, peak, in sub-hurricane force winds) turbine.

-=s