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Sometimes
it is both easier and more economical to purchase products in a matched
package. Below I have some water pumping systems that include
pump, solar panels, and mounting structure for the panels. Of
course you'll need all the site-specific materials to put it all
together such as wire, steel mounting pole, pipe and fittings, etc.
You may also need electrical enclosures and other equipment
depending on your needs. But here you have the main items as a
matched set that will provide the water flows indicated, at a package
price. Please keep in
mind that prices on solar panels fluctuate frequently, therefore these
prices may change slightly before I can update them.The
table below lists depth and flow of each system. These numbers
can be misleading because maximum depth and flow rate are directly
proportional to each other. This means that for each
array/pump combination, a shallower depth will produce increased flow, with the array size being the primary limiting factor. The real story is told when checking the pump curves. I have re-worked the Grundfos tables to emphasize maximum flow (top number), and maximum useful depth (bottom number), to provide information that is more meaningful.
The Lorentz table shows the pump flow at maximum working depth
for the system, so you will get higher flow rates with a shallower
depth. Daily water production is based on 5 hours of sun.
You will
get more or less sun based on many factors like: latitude, climate,
season, and temperature. If this seems all too confusing,
contact me and I'll be happy to walk you through the process of finding
the right system.
| Lorentz Pump Systems |
| Well Pump System |
Depth ft (m) |
Gallons Per Day, 4.5 solar hrs/day |
Peak Flow Rate (GPM) |
Peak Watts |
Pump (Lorentz) |
Panels
(Suntech) |
Pole Mount (UniRac) |
Part # |
*Price |
Swan Lake |
460 (140) |
180 |
1.3 |
300 |
PS 600 (48 VDC) |
2 (STP170) |
500118 |
1523170 |
$4121 |
Lake Victoria |
600 (180) |
400 |
1.5 |
480 |
PS 600 (72 VDC) |
3 (STP170) |
500127/ 500237 |
1525000 |
$5258 |
Lake Travis |
460 (140) |
660 |
3.1 |
660 |
PS 600 (48 VDC) |
4 (STP170) |
500340/ 501453 |
1525800 |
$6483 |
Lake Shaver |
760 (230) |
740 |
1.7 |
840 |
PS 1200 (72 VDC) |
6 (STP170) |
501460 |
1522240 |
$8832 |
Lake Geneva |
50 (14) |
2100 |
6.9 |
150 |
PS 150 (12 VDC) |
1 (STP170) |
500038 |
1527400 |
$2388 |
Lake Como |
75 (22) |
2700 |
9 |
300 |
PS 150 (24 VDC) |
2 (STP170) |
500118 |
1525100 |
$3579 |
Eagle Lake |
165 (50) |
790 |
1.3 |
150 |
PS 200 (24 VDC) |
1 (STP170) |
500038 |
1521120 |
$2618 |
Lake Chapala |
165 (50) |
790 |
2.8 |
250 |
PS 200 (48 VDC) |
2 (STP170) |
500118 |
1526500 |
$3830 |
| Grundfos Pump Systems |
| Well Pump System |
Depth feet |
Gallons Per Day (5 solar hours) |
Flow Rate (GPM) |
Pump (Grundfos) |
Panels |
Pole Mount (IronRidge) |
Part # |
*Price |
Clear Lake |
30
210 |
3150
300 |
10.5
1.0 |
11 SQF-2 |
(3) KC85 |
UNI-TP/04
|
1502550 |
$5461 |
Winnipeg |
75
250 |
3000
300 |
10
1.0 |
11 SQF-2 |
(4) KC85 |
UNI-TP/04A |
1503400 |
$5993 |
Ontario |
90
280 |
3000
300 |
10
1.0 |
11 SQF-2 |
(5) KC85 |
UNI-TP/08 |
1504250 |
$4620 |
Huron |
260
300 |
2100
1800 |
7.0
6.0 |
11 SQF-2 |
(5) SW175 |
UNI-TP/10 |
1508750 |
$11,174 |
Erie |
210
300 |
2460
1200 |
8.2
4.0 |
11 SQF-2 |
(4) SW175 |
UNI-TP/06LL |
1507000 |
$9618 |
Michigan* |
270
300 |
2250
1800 |
7.5
6.0 |
11 SQF-2 |
(8) SW175 |
UNI-TP/12LL |
1514000 |
$15,902 |
Superior |
270
360 |
1260
780 |
4.2
2.6 |
6 SQF-2 |
(5) KC85 |
UNI-TP/08 |
1514250 |
$4221 |
Salt Lake* |
300
360 |
1320
1260 |
4.4
4.2 |
6 SQF-2 |
(8) SW175 |
UNI-TP/12LL |
1524000 |
CALL |
Tahoe |
300
360 |
1320
1260 |
4.4
4.2 |
6 SQF-2 |
(4) SW175 |
UNI-TP/06LL |
1517000 |
CALL |
*
The primary reason for designing a system with an array this large
would be to supply more daily water production in overcast or winter
conditions from a deep well, particularly regions that have a lot of
cloudy weather. It would provide a proportionately longer "solar
day" because it gathers more light energy in the morning and evening
hours. It could also be used to charge batteries for pump
operation during night hours or power other devices with the excess
power.