Desert farm, Big pump, Batteries?

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Re: Desert farm, Big pump, Batteries?

Postby Gordon-Loomberah » Tue Jan 09, 2018 10:31 am

Installing that monster pump looks like a major operation Ben!

How is the solar + pump system performing now it has been in operation for a while?
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Re: Desert farm, Big pump, Batteries?

Postby gfsben » Tue Jan 09, 2018 11:36 am

pump head transducer.jpg


controller app.jpg


Sorry for the quality of the photos. Some I took in bad light, some are others photos. This site dosnt make it easy either- is the size limit really 100kb? ...no auto resize options... limit three photos....

These last two are of the bore head that include the pressure transducer, and the pump controller and the included android app.
We are going to get a new water meter with an output that connects to the controller, so the volume input will be more precise. The controller seems to be able to approximate the flow rate according to its frequency, but we suspect its over estimating by about 20%.
The app is easy to use. It shows power, voltage, current, output frequency, flow rates, and logs volumes over days/months etc.. It allows you to set the maximum pressure on the system so the controller will adjust the speed of the pump if you close off part of the irrigation network. If you close everything off it runs down to about 2.5 kw at about 25 HZ and just maintains the pressure. (we have it set on 1.2 bar at the moment). There is another input for a simple pressure switch as well which we will probably add just in case.

Its performing admirably so far. We are getting at least 500 kL a day. The orchard hasn't seen this much water for years and the dates are plumping up nicely.
What a revolution not to have the noisy smelly diesel start up in the afternoon everyday. The downside is a lower and variable flow rate. So there is a bit of work to do on automating and controlling valves to balance pressure and make sure we get water to all the palms and members sites and tanks.
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Re: Desert farm, Big pump, Batteries?

Postby gfsben » Tue Jan 09, 2018 12:09 pm

Yes is was a bit of an operation to get in down the hole. Mostly just a bit nerve raking having thousands of dollars of heavy pump suspended on a bit of rubber hose (albeit strong hose). Still a lot easier than hauling in and out the old pump- undoing twelve sections of 4 inch pipe and drive shaft.

shaft and riser.JPG


mono_pump and risers3.jpg
mono_pump and risers3.jpg (78.18 KiB) Viewed 1574 times
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Re: Desert farm, Big pump, Batteries?

Postby Gordon-Loomberah » Tue Jan 09, 2018 12:19 pm

>> is the size limit really 100kb? ...no auto resize options... limit three photos....

Yea, admin imposed the limit as people could post ridiculous sized phone images, and downloads/bandwidth are issues for people on slow connections.

The forum will hopefully move to a better more flexible platform one of these days.


However, it is a bit too restrictive sometimes, so I have just increased it to 250kB and 5 photos.
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Re: Desert farm, Big pump, Batteries?

Postby australsolarier » Tue Jan 09, 2018 1:50 pm

very impressive!
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Re: Desert farm, Big pump, Batteries?

Postby Gordon-Loomberah » Fri Jun 22, 2018 8:15 pm

Hey Ben, was that you on the Gardening Australia date farm segment? They've just shown a compilation of footage fropm the last year or 2, and a big date plantation in central Oz was featured.
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