Type 94 (and others) needs both, the array slope as well as the IA as input. What does the type need the array slope for if the IAM can be calculated from the IA?
J?rn,
The IAM for beam radiation can of course be calculated from the
incidence angle. The array is needed in order to calculate the incidence
angle modification for diffuse sky and ground reflected radiation.
Best,
David
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com
J?rn,
The IAM for beam radiation can of course be calculated from the
incidence angle. The array is needed in order to calculate the incidence
angle modification for diffuse sky and ground reflected radiation.
Best,
David
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com