Cistern - Page 3

ecomodded · 10-22-17, 11:40 PM

That little pump probably only makes 2 lpm at 200 feet so it would be good for a thirst quencher or light duty use. I think it runs on 80 watts.

This below pump has better performance and runs on more wattage

Kary 400 Feet Head 3.5 Inches 24v 36v DC Brushless Submersible Solar Powered Water Pump for Deep Well, Max Power 860w, Max Flow 9GPM

Dimension:
Total length: 25.6"
Max diameter: 90mm(almost 3.5")
Outlet port diameter: 32mm
Net weight: 5.8kg(12.8lb)
Gross weight: 6.4kg(14.1lb)

Installation
1. This pump is a solar powered water pump, 36v is ideal input voltage. The solar panels' power should be 1.5~2 times bigger than the pump. 2 or 3 pcs 12 volts batteries connected in series also can be power source.
2. Connect the pump to solar panels directly, if the total length of the cable between pump and solar panel is longer than 100ft, we strongly recommend 9 or 8AWG wire.
3. Safety rope or wire is very important for deep well pumps, because the safety rope or cable will be the only way to retrieve the pump from the bottom of the well, we recommend a good stainless steel cable rather than rope.
4. If your solar panel kit is not powerful enough and you don't want to add more, a couple of 12v batteries is a good option, they can help to hold the input voltage above the "low voltage cut off point", however, sufficient solar panels is still the best power source.

oil pan 4 · 10-23-17, 09:20 AM

Hey I was probably looking at that same one on ebay last night. Well a 24v verson.
I looked at some 48v ones and they were expensive.

A lot of the smaller ones were designed to be hooked straight to a panel. I would have to have on demand and therefor powered by battery.
800+ watts is way too much the small charge controller I would be using.
So what I would do to keep from killing the batteries is use the DC output on the charge controller to power a contactor when water is needed.then when battery voltage drops below 11 volts the contactor won't close. Batteries only get slightly over drawn, not killed totally dead.

ecomodded · 10-23-17, 10:11 AM

And once you know your system you will know you have say 3 hours of pumping ready and can use 2 1/2 hrs to play it safe.
That 36v version of the pump costs around $250 on Amazon

NiHaoMike · 10-23-17, 11:06 AM

For that sort of distance, wiring loss is going to be a problem at low voltages. Do they make small 3 phase well pumps that can be run off a small VFD?

oil pan 4 · 10-23-17, 11:36 AM

If I do solar the well house will have its own solar. So very short runs for DC, 500ft or so if I run single phase out there.

WisJim · 10-24-17, 06:23 PM

I have friends who collect rainwater for all their water needs at their off-grid Minnesota home. Rainwater Harvesting - A WebsiteBuilder Website

oil pan 4 · 10-24-17, 06:33 PM

I will mass murder birds if I start getting bird poop in my water. But I have a hot shinny roof like on the MN water collecting Web page so it shouldn't be a problem.

ecomodded · 10-24-17, 08:47 PM

Nice thing about well water is no bird poop it should be drinkable right out of the tap

natethebrown · 10-24-17, 09:28 PM

Quote:

Originally Posted by oil pan 4

So I am considering rain water catching.

My parents have been living on rainwater harvesting for a number of years now. They have had many many many issues and my dad has worked through them. He is a multi-disciplined engineer, so it is not a backwoods redneck system he has put together! My dad wrote a book on his system: https://www.amazon.com/Modern-Potabl...g+daniel+brown

If you are truly serious about doing this, my dad has consulted a few people on their installation, and is currently wrapping up a complete system installation now. PM me and I will give you his contact information.

He is currently re-writing his book with some major improvements that he has now incorporated, so I am unsure if you should order the book just yet.

oil pan 4 · 10-25-17, 02:34 AM

The municipal water system in town is crumbling.
They fix a leak and where they fixed it starts leaking again a few days or weeks later.
They have had 2 large street flooding water main blow outs just this year that I know of.

Well water is nice but it's very hard here. It turns dishes in the dish washer white with minerals.
And to add 40 to 60 operating psi in top of water colum pressure and I'm looking at spending up to 2 mega watt hours per year just pumping water, just for me and my wife, not watering anything.

10-22-17, 11:40 PM	#21
ecomodded Supreme EcoRenovator Join Date: Sep 2012 Location: Vancouver Island,Canada. Posts: 1,037 Thanks: 116 Thanked 100 Times in 87 Posts	That little pump probably only makes 2 lpm at 200 feet so it would be good for a thirst quencher or light duty use. I think it runs on 80 watts. This below pump has better performance and runs on more wattage Kary 400 Feet Head 3.5 Inches 24v 36v DC Brushless Submersible Solar Powered Water Pump for Deep Well, Max Power 860w, Max Flow 9GPM Dimension: Total length: 25.6" Max diameter: 90mm(almost 3.5") Outlet port diameter: 32mm Net weight: 5.8kg(12.8lb) Gross weight: 6.4kg(14.1lb) Installation 1. This pump is a solar powered water pump, 36v is ideal input voltage. The solar panels' power should be 1.5~2 times bigger than the pump. 2 or 3 pcs 12 volts batteries connected in series also can be power source. 2. Connect the pump to solar panels directly, if the total length of the cable between pump and solar panel is longer than 100ft, we strongly recommend 9 or 8AWG wire. 3. Safety rope or wire is very important for deep well pumps, because the safety rope or cable will be the only way to retrieve the pump from the bottom of the well, we recommend a good stainless steel cable rather than rope. 4. If your solar panel kit is not powerful enough and you don't want to add more, a couple of 12v batteries is a good option, they can help to hold the input voltage above the "low voltage cut off point", however, sufficient solar panels is still the best power source. __________________ To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by ecomodded; 10-23-17 at 12:30 AM..

10-23-17, 10:11 AM	#23
ecomodded Supreme EcoRenovator Join Date: Sep 2012 Location: Vancouver Island,Canada. Posts: 1,037 Thanks: 116 Thanked 100 Times in 87 Posts	And once you know your system you will know you have say 3 hours of pumping ready and can use 2 1/2 hrs to play it safe. That 36v version of the pump costs around $250 on Amazon __________________ To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

10-23-17, 11:06 AM	#24
NiHaoMike Supreme EcoRenovator Join Date: Oct 2008 Location: Austin, TX Posts: 1,154 Thanks: 14 Thanked 257 Times in 241 Posts	For that sort of distance, wiring loss is going to be a problem at low voltages. Do they make small 3 phase well pumps that can be run off a small VFD? __________________ To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...

10-24-17, 08:47 PM	#28
ecomodded Supreme EcoRenovator Join Date: Sep 2012 Location: Vancouver Island,Canada. Posts: 1,037 Thanks: 116 Thanked 100 Times in 87 Posts	Nice thing about well water is no bird poop it should be drinkable right out of the tap __________________ To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

10-23-17, 09:20 AM	#22
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	Hey I was probably looking at that same one on ebay last night. Well a 24v verson. I looked at some 48v ones and they were expensive. A lot of the smaller ones were designed to be hooked straight to a panel. I would have to have on demand and therefor powered by battery. 800+ watts is way too much the small charge controller I would be using. So what I would do to keep from killing the batteries is use the DC output on the charge controller to power a contactor when water is needed.then when battery voltage drops below 11 volts the contactor won't close. Batteries only get slightly over drawn, not killed totally dead.

10-23-17, 11:36 AM	#25
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	If I do solar the well house will have its own solar. So very short runs for DC, 500ft or so if I run single phase out there.

10-24-17, 06:23 PM	#26
WisJim Helper EcoRenovator Join Date: Aug 2009 Posts: 42 Thanks: 7 Thanked 9 Times in 8 Posts	I have friends who collect rainwater for all their water needs at their off-grid Minnesota home. Rainwater Harvesting - A WebsiteBuilder Website

10-24-17, 06:33 PM	#27
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	I will mass murder birds if I start getting bird poop in my water. But I have a hot shinny roof like on the MN water collecting Web page so it shouldn't be a problem.

10-25-17, 02:34 AM	#30
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	The municipal water system in town is crumbling. They fix a leak and where they fixed it starts leaking again a few days or weeks later. They have had 2 large street flooding water main blow outs just this year that I know of. Well water is nice but it's very hard here. It turns dishes in the dish washer white with minerals. And to add 40 to 60 operating psi in top of water colum pressure and I'm looking at spending up to 2 mega watt hours per year just pumping water, just for me and my wife, not watering anything.