I had a thought of combining two "green" ideas but wanted to come up with a budget and plausibility exercise. I wanted to post here to draw from your solar expertise.
What I have:
In Central NJ I have a 20’x 20’ fenced in garden with rows 2’ apart (9 rows) of mixed density (row crop and high density) vegetables.
Watering this garden is a problem since the house is about 1/8th of a mile away and water has to be carted back and forth.
I was thinking of installing a well, solar powered well pump, storage tank, and drip line irrigation system.
I want to run the system for 1 hour a day everyday. Each dripper will supply .5GPH @ 20PSI. The system will contain ~200 drippers for a total of 100GPH @ 20PSI. I wanted to include a 250G storage tank to account for a “shady” day. It will have a float stop to turn off the pump to avoid overfilling. I figure a storage tank is a much cheaper alternative than batteries. I am looking to spend about $2000 for all equipment (not including the well drilling). The well will be 50ft deep.
After looking at some DC powered pumps online, I am having trouble finding specifications that correlate with a PV panel. For example I found a pump (SunPumps SDS-D-12 which looks good but will a single Kyocera Solar KD-135 power it or will I need a bigger one like a SolarWorld SW-175 or more than one? Again, my goal is to fill about 100G/day. I would probably also use a SunPumps VCA pump controller to manage the pump.
My second big question is a plumbing question and whether the weight of the water in the tank can provide 20 psi on the ground or mounted no more than 6’ in the air? If not, I guess I would need a pump for that as well and some sort of timing device.
If this is way overkill, let me know but also this garden could be expanded to three times it’s width in the future with a new fence. Also, the $2000 budget is pretty firm. Right now I see the pump costing about $700, pump controller $400, solar panel $400, tank $300, drip equipment $100, mounts & wiring $100. I can fabricate a stand for the tank, panel, and controller with some unistrut on a concrete pad.
Let me know if I am on the right track and if you have any answers to my questions. Also if you have done anything like this or have some helpful insight it would be appreciated. I would like this in place by next year if it is feasible.