well pump

looking to run a well pump 1 hp 230 volt single phase 13amps on start up drops to 9.5 on the run. wanting to run it all day to help keep my pond full. doesn't have to run at night not wanting to buy expensive battery set up has about 75 ft of lift and then gravity feed from top of well down to pond
Any thoughts
Any thoughts
Comments
That is a lot of energy... Something like:
- 9.5 amps * 240 VAC * 0.8 Power Factor (guess) = ~1,824 Watts average load
- 1,824 Watts * 10 hours a day = 18,240 WH = 18.24 kWH per day
And what is your electric bill? Say $0.15 per kWH (ranges from under $0.10 to over $0.40 depending on where you live and your local state's energy policies:- 18.24 kWH per day * $0.15 per kWH * 30 days per month = $82.08 per month (wild guess)
Finding very efficient well pumps (and motors) can save you a lot of money.Or you can buy a very efficient solar friendly pump that can even run directly from solar panels (pump when the sun is up)--Not cheap for the pumps.
There are now VFDs (variable frequency drives) that can run directly from solar panels. Are becoming more popular with farmers and other countries where the option are diesel or petrol powered gensets.
Some discussions/links to solar water pumping:
https://forum.solar-electric.com/discussion/comment/191136#Comment_191136
Moving water can consume quite a bit of energy... Any way you can reduce the water loss from the pond (or is the pump used as an irrigation source?)?
-Bill
The inrush occurs when the rotor is at stall, usually for less than 10 miliseconds, gradually dropping for around 70 miliseconds until the run current settles to its rated value, which will be influenced by load, the greater the total head the higher the run current.
These are the values taken from a 230V 1hp single phase submersible pump with a total head of ~24 feet, inrush 42A, run 4.6A, maximum rated current is 8.9A. The biggest problem using an AC single phase pump with solar is the inrush, since an inverter would be required a battery would also be required along with a charge controller. The battery would have to be sufficiently sized to not only support the running when a cloud passes for example, but also the inrush demands during start up. In the above example the 42A inrush at 230V would mean ~420A at 24V which is what I was using, if the battery is too small in capacity the voltage will drop causing the inverter to fault, needless to say the inverter itself needs to be capable of supporting the required current demands
The DC pump is one option usually with a DC - DC controller to restrict low voltage starting attempts, this eliminates the need for the battery, and inverter. The other is a solar MPPT / VFD driving a 3 phase AC pump, the benefit of this method is the pump will operate at lower speeds outside the solar peak allowing better overall pumping performance.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,