Check out Sunrotor they know their stuff it’s been a while but they have dialed me in the past
Just with all other solar equipment, you definitely don't want to
go CCC. I'd recommend you take a look at the Grundfos SQ flex
line. 2nd, you need to look at the pump charts to see what the
actual flow rate will be at the head you're considering. The pump
you are looking at doesn't even give basic flow rates at pressure.
(2nd clue it sucks) Max head is basically where the pump quits
pumping, and the 8 GPM rating is at no pressure at all. I'd
"guess" it would pump maybe 4 to 6 GPM at 40 ft of head? Also,
add extra head for the friction losses in the pipe. That can be
looked up (just like wire losses) for the size pipe and flow rate.
Finally, you didn't mention how large a pond. To fill the pond,
it needs to overcome both evaporative losses, and leakage into the
surrounding soil.
Ray Walters
Remote Solar
On 5/8/2023 10:04 AM, Howie Michaelson
via RE-wrenches wrote:
Hi,
I have a friend/client that is looking
to keep his pond filled with water pumped from a spring
downhill from the pond. He's happy to have the pond filled
just when there is enough sun to pump, so no batteries are
desired. I have little to no experience with water solar
direct pumping, so I'm a little leary of spec'ing anything.
The pump will sit 5 feet deep, the distance from spring to
pond is about 120' and the head is about 30-40' . He found a
pump on Amazon:
Again I know virtually nothing about
this topic so I'm not clear whether this pump is appropriate
or not. Any advice is appreciated.
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