Which solar water pump

Nov 19, 2006 06:37 pm
Which solar water pump

I couldn't find the questionaire, so I'll pst it here.  I live in Thailand, working for a sustainable living community here, and am researching the best Solar water pump for our use. 

We recently put in a 2 million Liter dam at the top of our property along with swales (permaculture style), and are now looking into using a solar pump to help keep those charged up in the hot season, as well as to start the ciphon for irrigation out of the pond.

We are going to dig a well, and I can't imagine that it will be more than 5 meters (15 feet) deep.  And we need to pump up to just shart of 30 meters (100 feet).  We don't need much gpm, but a steady flow would be great (1-4 gpm is fine).  our water is a little silty, but pretty good. 

We would like to get a PV direct DC current pump to cut out the batteriesm and we would probably just let the solar water pump run all the time that the sun was strong enough for it (most days here in Thailand). 

Any recommendations?  I am hoping to purchase it in a couple weeks and have it in by the new year.  Thanks
Christian
 
Dec 1, 2006 02:33 pm
Re: Which solar water pump

A company called Worldwater (worldwater.com) does this kind of thing.
 
26 Posts
Dec 4, 2006 01:09 pm
Re: Which solar water pump

I would look closely at the slowpump from dankoff (conergy, now, I think). These are very efficient and durable. I used one heavily for irrigation for several years, though a few years sitting on a shelf seems to have left it unable to pump to capacity. You can read about it on this site. 
 
462 Posts
Dec 16, 2006 01:17 pm
Re: Which solar water pump

Christian, if you are going to go with PV, and since small 12 volt pumps are few and far between, you may want to consider buying a small inverter, to work off some batteries charged by the PV, then you can purchase an AC pump that fits your needs.
 

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