Required Solar Power Agricultural Water Pump

Hello,

You state that current equipment uses 25HP motors.  Those are very large systems, probably unfit for solar.
To  get an accurate idea of your requirements, you need to say how much water you need per day, and also if the water needs to be lifted further up from ground level.

With a 300-400ft lift (approx 120m), the highest commercially available flow rate I'm aware of with a solar pump would be 3,000 to 5,000 gallons per day (12 to 20m3), with around 2kWp or more of solar panels.

WHich country and latitude/location are you in?  You have very large seasonal temperatures.  Solar pump manufacturers have distributors in many countries but not all.

If you are really talking about 25HP systems and 6 inch distribution pipes, the only approach I would be aware of, would be to build a large solar PV plant with large battery bank and inverter, and using standard industrial AC pumps.

If you have access to the electrical grid and want a hybrid PV+grid system, there is a company in California which has built city systems like that up to 1MW.   I forget their name, but a google search would find them.   Such systems are extremely expensive and require dedicated maintenance.

Cheers,
Michel

Hi,

I am looking for water pump for Agriculture run by solar power, I am working with USAID and world bank if you can
help with latest and best way to find the right product please Email me back, we can do some cool project
Thanks.

One way you can estimate the size PV array needed to power the pumping station is to look at the power bill. It should state how many kWh's (kilo Watt hours) are used in a month.

For example:
Lets say the pumping station consumes 200 kWh's per month during pumping season. We all know that to be the same as 200,000 watt hours.

Now we need to know the number of hours of equivalent full rated power output from a PV module.
What that means is, a PV modules power output starts out low in the morning, gradually rises to near peak output at noon and then, power output starts going back down into the evening. So we add that all up and divide it by a PV modules output.

I am going to use 5 hours of equivalent full rated power output in my example.
200,000 watt hours divided by 30 days = 6,667 watt hours per 24 hours day/night. If the pumps run day and night on utility power then divide that in half for 3,334 watt hours per day if you want it to run from just PV power with no batteries for night time use. Or if you want a utility intertied system and want to offset nightime power consumption use the the full 6,667 watt hours.

3,334 watt hours divided by 5 = 667 watt PV array.

Remember this is just an example. Don't use these figures to size your PV array.

A review of the math:
200 x 1,000 = 200,000
200,000 / 30 = 6,667
6,667 / 2 = 3,334
3,334 / 5 = 667

The biggest things you need to know are:
kilowatthours consumed by the pumping station for one, twelve hour day and, the number of hours of equivalent full rated power output of a PV module per day in your area.

Hello Aziz,

Our company provides solar power water pumps and other water solutions for customers worldwide.

Would you please be so kind to tell us more about your project and what you require?

Thanks in advance!

Maarten.

Hello Aziz,

We are looking forward to your answer.

Best regards,

Maarten.

Omar:

I think your pumping problem is orders of magnitude greater than what is normally handled on this forum. You need to better identify what you have and then seek professional help.

I suspect that your current pumps are 415V, 50 hertz. They most likely have a combined output somewhere near 500 gpm from the 300-400 foot range, although this would be reduced if the local voltage sags, or if they are wired to a single phase.
Pumping 20 hours a day, you are looking at something in the 500,000-600,000 gallons a day range. (roughly 1900-2300 cubic meters a day).

In addition to better defining your current system, you need to define what it is you expect to achieve with the new system.  Let the professionals develop a solution for you, rather than guessing at what might solve your problem.

If you tell them you want solar, that is what they will do. If you leave all options open, they could come up with recommendations from rain water catchment to switching over to dry land rice.
Ken

I may be able to help Omar,
we farm off grid and irrigate about a 1,000 tropical trees. Our solar pump operates off two trackers and we store in two 8,000 gallon tanks. We drip irrigate rather than flood irrigate.....can either be contacted tru the forum or directly at raysubtropical @ roadrunner.net....