View Single Post
  #53 (permalink)  
Old 07-22-2007
camaraderie's Avatar
camaraderie camaraderie is offline
moderate?
 
Join Date: May 2002
Location: East Coast
Posts: 13,899
Rep Power: 13
camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
AMY...The real issue we have been discussing is how much wattage the stik can put out under IDEAL circumstances...not whether it is better than fixed panels. If it cannot put out what Brian claims at PEAK hours...then it cannot put that out when the sun is lower on the horizon either.
We ALL agree that the ability to position the stik in the tail hours of the day is a significant plus over fixed systems.
Note that what you "seem" to be averaging on a good clear day...would "seem" to be rather overstated since you are relying on the MPPT readouts rather than actual test equipment. You would need 10 hours of input at slightly more than the peak wattage HS measured to hit 70AH's.

EDIT...HS did do some early measurements with the panels pointed at the sun BUT the REAL output was quite low. To understand...look at the footcandles of light hitting a properly positioned panel he recorded:
The light level readings I got, measuring incident light (i.e. that falling on the panels) was:
5:30AM, 12 foot candles
6:00 AM, 32 foot candles
6:30AM, 65 foot candles
7:15AM, 130 foot candles
8:10AM, 260 foot candles

This contrasts with about 32000 footcandles at PEAK where he measured about 43 watts. So there is input to the panels at low angles to the sun...but even it was 500 percent more...it doesn't amount to much compared to the 6 hours or so of peak output in your neck of the woods.

Last edited by camaraderie; 07-22-2007 at 11:41 PM.
Reply With Quote Share with Facebook
Sponsored Links