Hydro-Stream Engine [RE-wrenches]
Gary Higbee
ghigbee at efn.org
Tue May 2 11:58:30 PDT 2000
Hi Wrenches,
I'm getting ready to install another Stream Engine, and this 24-volt system
requires a run of around 450 feet. With a potential about 28 amps and 5%
loss I'm looking at 4/0 copper. As we know 900' of this stuff is a tad on
the pricey side. I've considered a few options, and would appreciate some
feedback:
1) Go with smaller or Al wire (4/0 Al is pretty reasonable at about
$450/1000), and accept a loss of about 8%. This doesn't seem out of line,
and may end up being the simplest and most cost-effective solution.
2) Use a 48-24 converter at the batteries and let the Stream Engine run at a
higher voltage. Anyone done this? With what?
3) Remove the rectifier box from the Stream Engine and run the 3-phase AC up
to the batteries. Bob-O mentioned this possibility in his Oct/Nov '98 HP #67
article. Has anyone done this? What voltage would I use for the AC
calculation?
While I'm on the Stream Engine what sort of output improvement have you seen
in adjusting the rotor, especially in increasing the air gap in a low-head,
high-flow situation?
Thank You!
Gary
P.S. If anyone is interested in a heavily-edited Stream Engine output
adjustment procedure let me know and I'll send it to you. I found the
procedure in the manual inadequate for for a client who wasn't familiar with
the machine, and wrote a more-detailed version.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Gary Higbee (ghigbee at efn.org)
(541)607-1818
Solutions from the Land--solar,
wind, and hydro site analysis, design,
and installation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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