[TRNSYS-users] weird behavior of type 109, azimuth tracking mode, and slope=0

[Cramer Silkworth]

One for the "You wouldn't/shouldn't normally do this, but..." Department:
When running type 109 for a surface of slope=0 in azimuth tracking mode, 
I get a strange result. I would expect radiation values equal to the 
fixed horizontal values, but rather i get values exactly equal to a 0 
degree slope surface in single axis (mode 3) tracking. These are all for 
south-facing surfaces (when applicable). See attached chart. Thoughts?

-Cramer
-- 
*Cramer Silkworth
212 219 2255 | silkworth at transsolar.com <mailto:silkworth at transsolar.com>
Transsolar Inc. | 134 Spring Street Suite 601 | New York, NY 10012

Transsolar Climate Engineering
Technical consulting for energy efficiency and environmental quality in 
buildings.
New York - Stuttgart - Munich*
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