High lift solar water pump

[SunEagle]

I'll bet I could keep them running 8 hours, and mostly fast. Just need a couple extra panels facing E & W. Bruce Roe

Not sure if they can handle a lot of power. They move a lot of air just using 10 watts so if they got hooked up to your array you would have a Cuisinart.

[bcroe]

I even have a couple of attic fans that run directly from a 10 watt pv panel. Since the motors are DC they will run either very slow in low light or very fast in direct sunlight. But they won't run for 8 hours a day even here in Florida.

I'll bet I could keep them running 8 hours, and mostly fast. Just need a couple extra panels facing E & W. Bruce Roe

[SunEagle]

Lol. Our sunrise here in Edmonton is at 6:00 am and sunset is at 10:30 pm. Right now we are getting over 16 hours of daylight. Winter is another matter.......

I didn't say the sun couldn't shine for more than 8 hours. I said the sun can't provide the full amount of "usable" sunlight for a pv panel to generate name plate wattage for that length of time.

Sure you will get something out of a panel early in the morning and late in the afternoon but unless you have a pretty large pv array the total amount of wattage a few panels are generating is small and IMO will not provide enough to run an AC water pump. Which is what this thread was about.

Now there are DC pumps that are designed to run directly from a solar pv panel but will they provide the desired amount of gpm flow needed in low light? I doubt it.

I even have a couple of attic fans that run directly from a 10 watt pv panel. Since the motors are DC they will run either very slow in low light or very fast in direct sunlight. But they won't run for 8 hours a day even here in Florida.

[Darren S.]

Where in the world does the sun shine for 8-10 hours? I think your post is a little off the deep end unless you can provide a make & model number of the AC pumping system that runs on solar without a battery for 8 hours.

Lol. Our sunrise here in Edmonton is at 6:00 am and sunset is at 10:30 pm. Right now we are getting over 16 hours of daylight. Winter is another matter.......

[inetdog]

What a great post concerning high lift solar water pump!! It seems like really great. But dear I would prefer buying honda water pump <URL deleted> instead of this solar pump. It highly depends on the weather that may cause problems too!

It looks like all of the Honda water pumps shown on that page are shallow well or booster pumps that cannot work with a suction head of more than about 30 feet. A large number of them are construction trash or sewage pumps or basement deflooding pumps.

The OP needs either a jet or submersible pump. It is possible to make an engine driven jet pump, but I have not seen one. An engine driver submersible is just not in the cards.

[Trevor65]

What a great post concerning high lift solar water pump!! It seems like really great. But dear I would prefer buying httpCOLON//www.aapowersalesDOTcom/Honda-Water-Pumps-s/1820.htm <honda water pump instead of this solar pump. It highly depends on the weather that may cause problems too!

--- Mod Note: No clickable links to commercial sites allowed for new members.

[Wy_White_Wolf]

In fact, AC pump can work only with a pump inverter, no need battery, or others.
AC pump working time can be lasting 8-10 hours when it is shining.
DC pump should work with controller, AC pump inverter includes control function.

I'd like to see were any manufactures liturature supports that statement for their AC pumps.

My DC pump (Shurflo 9300) doesn't need a controller. I do run a LCB just to get a few more gallons a day pumped. It's max lift is 230 feet so a little below hat the OP needs.

WWW

[SunEagle]

In fact, AC pump can work only with a pump inverter, no need battery, or others.
AC pump working time can be lasting 8-10 hours when it is shining.
DC pump should work with controller, AC pump inverter includes control function.

Where in the world does the sun shine for 8-10 hours? I think your post is a little off the deep end unless you can provide a make & model number of the AC pumping system that runs on solar without a battery for 8 hours.

[YCsolar]

You might be correct but there are DC pumps that will run directly from solar panels without the need of batteries or inverter for AC.

As long as the flow rate doesn't need to be constant or fast the pump speed can vary with the suns intensity yet still move enough water when it is shining.

Most AC pumps require a steady voltage which means batteries, battery charger and inverter along with the solar panels. An AC pump may have a higher efficiency but I feel the cost is a wash or even less using the DC pump designed for solar applications.

In fact, AC pump can work only with a pump inverter, no need battery, or others.
AC pump working time can be lasting 8-10 hours when it is shining.
DC pump should work with controller, AC pump inverter includes control function.

[inetdog]

Maybe a high pressure cutoff switch in the circuit to shut down the pump or a 3 way valve to change the flow back to the creek should a blockage on the pump discharge occur.

Yes, AFAIK an overpressure switch that requires a manual reset will probably do the job.

[SunEagle]

Note that this is a positive displacement pump, so do not even think of using it where it is easy to close a valve on the pump output without shutting off power to the pump!
Either the motor will stall and may be damaged or something will break.

Maybe a high pressure cutoff switch in the circuit to shut down the pump or a 3 way valve to change the flow back to the creek should a blockage on the pump discharge occur.

[SunEagle]

how about flow rate required? I suggest AC pump, it is cheaper, and higher efficiency.

You might be correct but there are DC pumps that will run directly from solar panels without the need of batteries or inverter for AC.

As long as the flow rate doesn't need to be constant or fast the pump speed can vary with the suns intensity yet still move enough water when it is shining.

Most AC pumps require a steady voltage which means batteries, battery charger and inverter along with the solar panels. An AC pump may have a higher efficiency but I feel the cost is a wash or even less using the DC pump designed for solar applications.

[YCsolar]

Hi, does any one know of a 12 or 24 volt water pump that would pump up to a height of 80-100 meters. That is how high our house is above a creek. I have spare panels and batteries I can use but this would need some sort of high pressure pump I expect. I think it equals 142 psi or 9.8 bar
Thanks,

how about flow rate required? I suggest AC pump, it is cheaper, and higher efficiency.

[asdex]

Pump

Thanks very much for the advice. I'll have a look at it.
Cheers,

[Amy@altE]

Note that this is a positive displacement pump, so do not even think of using it where it is easy to close a valve on the pump output without shutting off power to the pump!
Either the motor will stall and may be damaged or something will break.

Good point, they may want to use it with a controller and float switch to turn it off when their tank is full. Additionally, it does not tolerate grit, so you must use the cartridge filter with it as well. But if you treat it well, it should last 15 -20 years. Dankoff also makes replacement parts for wearable parts, it is built to last and to be field repairable when needed.