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Another solar pumping question

alice915 | Posted in Energy Efficiency and Durability on

Hey there,
I would like to use solar power to pump around 10.000 L of water/day from a well into a reservoir that I could use for gravity fed irrigation via a drip system. Please give me your thoughts on this, I would like to know if it’s doable. I’m a newbie so please bare with me if I ask something outrageous
The specs on the pump:
At 45 volts DC the peak efficiency point is 18 GPM at 45 feet of head..
Max Current: 8.5 Amps
Max Power: 380 Watts
My question is:
Is it possible to run this pump directly from solar panels with an LCB? Would 2 x 250W panels wired in series do the job?

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  1. GBA Editor
    Martin Holladay | | #1

    Here are links to two web pages which will provide you all the information you need to know:

    PV-Direct Water Pumping

    Solar Water Pumping

    You can certainly design a system that will do what you want. Just follow the sizing and equipment selection guidelines provided in the Home Power article.

  2. user-2890856 | | #2

    How did you come to those numbers for head and GPM ?

    Why does one want to pump from a well to a cistern for irrigation during a drought condition , do you own a producing farm ?

    Using 2641 gallons of water a day and attempting to replace it into a cistern in 2.45 hours is wasteful . If you must perform this operation at least extend the amount of time in which you wish it to happen to lessen the power required to do it .

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