Jay, thanks for your response. Do you have or anyone close, actual experience
with Hober? At 230 ft, plus as Dan suggested, we have to add the head to the
storage tank. At that depth ShurFlo would run through diaphragms quickly and in
a place where a bicycle represents middle class, that cost could be
unsustainable. Centrifugal pumps really bog down at that depth, even from 270
gals per day it’s going to take quite a few watts to spin water to the surface.
It’s not obvious that Hober has pump curves available on their website, and
very little about their pumps.
Again thanks.
Bill Dorsett
“Start where you are. Use what you have. Do what you can” Arthur Ashe
1715 Leavenworth
Manhattan, KS 66502
www.fhreec.org <http://www.fhreec.org/>
785/539-1956 Office
785/564-2583 Cell
[email protected] <mailto:[email protected]>
From: RE-wrenches <[email protected]> On Behalf Of jay
Sent: Wednesday, January 02, 2019 10:19 PM
To: RE-wrenches <[email protected]>
Subject: Re: [RE-wrenches] Hober Pumps Reviews?
Hi William
I would steer you way way clear from the Shurflo 9300. It’ll break, they won’t
have parts and it’ll never get rebuilt.
The Hober uses the most common international design which is a DC to AC 3phase
variable speed pump controller, basically an inverter.
It then runs any 3 phase pump within its wattage parameters. These pumps are
everywhere, cheap, pretty efficient and extremely reliable. There are many
many of these inverters/controllers on the market.
It is really hard to get good data on how to size the PV watts to pump watts
using these inverters. Unlike a DC positive displacement pump which will still
pump but more slowly if low DC input, the centrifugal pump’s output drops off
dramatically if you get below its operating window. And that window is
dependant on the pump specs vs flow vs dynamic lift.
So need more water, add more PV, double PV watts to running watts as a bare
minimum. And specify a pump that is pumping in the bottom of the curve instead
of near the top helps to allow it to produce better during lower PV watts input.
Good luck,
Jay
Peltz power
On Jan 2, 2019, at 4:44 PM, William Dorsett <[email protected]
<mailto:[email protected]> > wrote:
Happy New Year Wrenches From a young lady who is trying to bring clean water
to a village in Uganda:
“ This is Rosanna Bauman from Garnett. I'd talked to you about 2 years
ago about solar pumps for our friends in Uganda. We installed the solar panels
but are just now getting the money saved up for the well-drilling. We have
clean water located 75 meteers below, no rock. Looking at a Shur-flo or a
Hober. We can get the Hober shipped direct from China to Uganda DHL, plus it's
about $200 less. However, we would like some advice as to their reliability.
We want something reliable.
Have any of your Solar Wrenches used or heard of this company? Looking at using
a 3000 liter/day pump to pump 1,000 liters, since it will be directly tied to
solar power, no battery back-ups.
You're welcome to call me if you have questions!
Thanks!
Rosanna Bauman”
Thanks for your thoughts
Bill Dorsett
“Start where you are. Use what you have. Do what you can” Arthur Ashe
1715 Leavenworth
Manhattan, KS 66502
<http://www.fhreec.org/> www.fhreec.org
785/539-1956 Office
785/564-2583 Cell
<mailto:[email protected]> [email protected]
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