[RE-wrenches] High Volume Solar Pumping

[Windy Dankoff]

Mac — Jay has a good suggestion of the Grundfos RSI. There are other companies making “solar pump inverters” to run standard 3-ph. pumps. And, that IS the way to go for systems of this size. 

Another supplier in USA is SunPumps. Another is GenPro (Lorentz distributor).

How to compare them?  The inverter will represent a small proportion of the system cost, so I would have to ask each prospective supplier to produce a system design for you. Compare them carefully in regard to how they are expected to handle less-than full sun conditions. Also “bells and whistles” can be extremely helpful, meaning data-logging and remote connectivity and control features. Another rare feature is the ability to handle both solar and backup power sources, not merely by transfer switch or relay but by blending them with solar priority.

Lorentz has been the leader in these features, but others have been catching up. I hope you (and others) will report back about your findings! I’m still researching this field form my upcoming book.

Windy Dankoff
Author, Consultant

     http://www.windydankoff.com <http://www.windydankoff.com/>

       Specialist in solar-electric applications & solar water pumping
                Education   <>   Industry support    <>    Since 1975

Co-author  Solar Water Pumping (Taylor & Francis, Earthscan London) for publication in 2019


> From: Jay <jay.peltz at gmail.com <mailto:jay.peltz at gmail.com>>
> Subject: Re: [RE-wrenches] High Volume Solar Pumping
> Date: September 20, 2018 at 11:24:39 AM MDT
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>>
> 
> 
> Mac 
> Look at the grundfos RSI 
> 
> It’ll go up to 37kw  for standard 3 phase pumps. 
> 
> At 37kw it’s 480 3 phase output and 1000vdc input if I remember correctly 
> 
> Jay

>> On Sep 20, 2018, at 3:01 PM, re-wrenches-request at lists.re-wrenches.org <mailto:re-wrenches-request at lists.re-wrenches.org> wrote:
>> 
>> From: Mac Lewis <maclewis1 at gmail.com <mailto:maclewis1 at gmail.com>>
>> Subject: [RE-wrenches] High Volume Solar Pumping
>> Date: September 20, 2018 at 11:04:21 AM MDT
>> To: RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>>
>> 
>> 
>> Hello Wrenches,
>> 
>> This is a larger volume pumping application than I have designed before so I'm trying to head in the right direction.
>> 
>> We need ~ 144,000 gallons per day
>> Head is ~70'
>> 
>> We'd like to do this via a surface pump(s) if possible.
>> 
>> Do you know any equipment that may be able to do this volume per day?
>> 
>> Thanks in advance
>> 
>> -- 
>> 
>> Mac Lewis
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20180920/c6ad5e50/attachment.htm>