What can you do with solar?
Hi, Please reply with what your solar system can do to enhance your RV'ing experience. Please list the number of watts, Charge controller, inverter (if any) and amp-hours of battery bank 256 ...
Forum Discussion
Interesting about pointing East of South. I have been trying to figure the optimum for that in order to get the highest SOC before the batts get knocked down making supper. (lesson learned from last year)
My tracking results should tell me this, but it isn't so clear somehow :(
Time, Flat , Tilted, Tracking- Amps
0700- 1.0, 0.6, 3.7
0800- 2.0, 1.7, 5.7
0900- 3.6, 3.6, 7.3
1000- 5.1, 6.2, 8.1
1100- 6.3, 6.8, 8.2
1200- 6.9, 7.7, 7.7
1300- 7.2, 8.3, 8.3
1400- 7.1, 7.7, 7.7
1500- 6.4, 6.9, 8.1
1600- 5.0, 6.6, 8.1
1700- 3.9, 5.4, 7.3
1800- 2.0, 3.3, 5.7
1900- 1.0, 1.7, 3.7
If I take the tilted values and shift the panel East and tilt it up a bit for the lower sun than noon, then it looks possible to get a run of high amps similar to the morning tracking values at the expense of afternoon amps.
The trick must be to find the most AH at some optimum to get it all done by 1700 vice 1900.
If you point at the sun's 1100 bearing (where South/ high noon is 1300) then that is 30 degrees to the left (sun moves at 15 degrees an hour) but sun is lower then, so panel needs to go up to still get max amps---unless there is enough play in the tilt vs amps it doesn't matter much--in that case keep it as low as possible and still get max amps I suppose.
Gale, did you get any comparable AH figures to find an optimum, or just pick an angle that looked likely?
Thanks.
EDIT- I see if I took half the Tracking AH for the morning and used the afternoon Flat AHs it comes out like leaving it Tilted South. Not sure that is a correct approach. Daily was 56, 70, 90 AHs, so 45 plus 28 = 73, close to that 70. Spooky. The diff might be that you get more of those 70 odd done by 1700. ??
My tracking results should tell me this, but it isn't so clear somehow :(
Time, Flat , Tilted, Tracking- Amps
0700- 1.0, 0.6, 3.7
0800- 2.0, 1.7, 5.7
0900- 3.6, 3.6, 7.3
1000- 5.1, 6.2, 8.1
1100- 6.3, 6.8, 8.2
1200- 6.9, 7.7, 7.7
1300- 7.2, 8.3, 8.3
1400- 7.1, 7.7, 7.7
1500- 6.4, 6.9, 8.1
1600- 5.0, 6.6, 8.1
1700- 3.9, 5.4, 7.3
1800- 2.0, 3.3, 5.7
1900- 1.0, 1.7, 3.7
If I take the tilted values and shift the panel East and tilt it up a bit for the lower sun than noon, then it looks possible to get a run of high amps similar to the morning tracking values at the expense of afternoon amps.
The trick must be to find the most AH at some optimum to get it all done by 1700 vice 1900.
If you point at the sun's 1100 bearing (where South/ high noon is 1300) then that is 30 degrees to the left (sun moves at 15 degrees an hour) but sun is lower then, so panel needs to go up to still get max amps---unless there is enough play in the tilt vs amps it doesn't matter much--in that case keep it as low as possible and still get max amps I suppose.
Gale, did you get any comparable AH figures to find an optimum, or just pick an angle that looked likely?
Thanks.
EDIT- I see if I took half the Tracking AH for the morning and used the afternoon Flat AHs it comes out like leaving it Tilted South. Not sure that is a correct approach. Daily was 56, 70, 90 AHs, so 45 plus 28 = 73, close to that 70. Spooky. The diff might be that you get more of those 70 odd done by 1700. ??
