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electrical:solar:output [2019/02/13 16:10]
frater_secessus [insolation] 		electrical:solar:output [2019/02/13 16:23]
frater_secessus [shade]
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     * clouds     * clouds
     * rain, fog     * rain, fog
-    * angle at which rays strikes the panel (angle of incidence).  At low angles less panel area is exposed to sunlight.+    * angle at which rays strikes the panel (angle of incidence).  At low angles effectively less panel area is exposed to sunlight.
     * amount of atmosphere the rays have to penetrate (less at solar noon, more at other times or anytime sun is relatively lower on the horizon)     * amount of atmosphere the rays have to penetrate (less at solar noon, more at other times or anytime sun is relatively lower on the horizon)
     * air quality:  \\ smoke((http://www.cheaprvliving.com/forums/showthread.php?tid=26592&pid=333826#pid333826)),((http://www.cheaprvliving.com/forums/showthread.php?pid=331627#pid331627))     * air quality:  \\ smoke((http://www.cheaprvliving.com/forums/showthread.php?tid=26592&pid=333826#pid333826)),((http://www.cheaprvliving.com/forums/showthread.php?pid=331627#pid331627))
  
  
-**Latitude** affects both seasonal hours of daylight and the angle of sun to the panel.  Greater latitudes (closer to the north pole for the US) will have lower overall averages than lesser latitudes.  They will have more extreme variation in insolation between summer and winter.  The most striking example of this is when those regions have 24hr sun in summer and 24hr night in winter.+**Latitude** affects both the angle (incidence) of sun to the panels and, to a lesser degree, seasonal hours of daylight.  Greater latitudes (closer to the north pole for the US) will have lower overall insolation averages than lesser latitudes.  They will have more extreme variation in insolation between summer and winter.  The most striking example of this is when those regions have 24hr sun in summer and 24hr night in winter.
  
 ==== effects of insolation on power output ==== ==== effects of insolation on power output ====
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 ===== shade ===== ===== shade =====
-Partial shade in good sun can have a drastic effect on panel output.  This is because panels are made of strings of individual solar cells;  having some turned "on" and some "off" can +Partial shade in good sun can have a drastic effect on panel output.  This is because panels are made of strings of individual solar cells;  having some strings turned "on" and some "off" (to prevent reversing current //into// the shaded cell) can 
  
 This effect can be attenuated somewhat by panel design (bypass diodes), parallel rather than serial panel connections, use of amorphous panels, and the use of MPPT controllers.  This effect can be attenuated somewhat by panel design (bypass diodes), parallel rather than serial panel connections, use of amorphous panels, and the use of MPPT controllers. 
electrical/solar/output.txt ยท Last modified: 2024/02/21 11:49 by frater_secessus

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