[TRNSYS-users] Solar zenith angle compared to the angle of incidence on south

HUCHEDE, Romain romain.huchede at quille.fr
Wed Nov 21 08:03:17 PST 2007


 
Hi all, 
 
I just plotted the "solar zenith angle" and the "angle of incidence" on south, given by type 109. I thought they would be at least equals at midday but I noticed a variable difference throughout a year period.
 
Can someone explain the difference betwenn these two angles ?
 
Best regards.
 
 
 
Romain Huchedé 

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