Author Topic: Grid tie voltage? AC or DC?  (Read 15208 times)

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Warpspeed

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Re: Grid tie voltage? AC or DC?
« Reply #66 on: January 12, 2017, 11:31:51 PM »
The simulator works if you enter a suitably high water velocity.
My figures:

10 fps or 6.8 Mph
Six foot diameter wheel
Width 96"
Blade thickness 1"
Shaft 1.5"
Generator 80%

Results:
1.965 Hp
Torque 600.8 Ft/lb
RPM 28.8
ten blades.

MAL

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Re: Grid tie voltage? AC or DC?
« Reply #67 on: January 12, 2017, 11:52:17 PM »
I guess that is what I was doing wrong.  I guestimated the flow at 1 ft per second.  I will try it again with more accurate figures.

Warpspeed

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Re: Grid tie voltage? AC or DC?
« Reply #68 on: January 12, 2017, 11:59:56 PM »
Try about 6fps (4.09 mph)

MAL

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Re: Grid tie voltage? AC or DC?
« Reply #69 on: January 13, 2017, 12:20:48 AM »
I tried it at 4.4 or 3 mph to be conservative and I got 632 kwh per month.  Less than I was hoping for, but now I can play with the numbers on the calculator.   I will be there playing with numbers for a while.  Thanks for setting me strait.
« Last Edit: January 13, 2017, 01:14:23 AM by MAL »

Warpspeed

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Re: Grid tie voltage? AC or DC?
« Reply #70 on: January 13, 2017, 12:43:29 AM »
If the whole thing becomes unreasonably large, there is no reason why two or three smaller wheels would not work.
That will also give you some backup if you need to do maintenance, modification or repairs.
Get a small one perfected first.
Then rather than build a bigger version, just build more of the same.