Number of Sheds Defined for Bifacial Modelling

[SM24]

The below shade scene contains 72 tracker sheds total, but 38 rows of trackers E-W. Should I define the number of sheds in the bifacial system definition as 72 or 38? And why is one method better than the other?

 

 

Edited Friday at 08:18 PM by SM24
Repeated image

[Linda Thoren]

The number of rows refers to the number of rows in the 2D cross-sectional representation of the system, assuming "unlimited long tables", and is relevant for the calculation of the effect of the first and last row of the array. In your case it would rather correspond to 38 rows, imagining the view in 2D.

Number of sheds (rows) and accuracy - PVsyst documentation

[SM24]

9 hours ago, Linda Thoren said:

The number of rows refers to the number of rows in the 2D cross-sectional representation of the system, assuming "unlimited long tables", and is relevant for the calculation of the effect of the first and last row of the array. In your case it would rather correspond to 38 rows, imagining the view in 2D.

Number of sheds (rows) and accuracy - PVsyst documentation

That makes sense, but if partitions are defined to account for the electrical effect, wouldn't this approach ignore edge effects and the N-S space between tracker tables?

[Linda Thoren]

The number of rows is only used for the bifacial calculation for the backside irradiance, where the simplified 2D cross section view is needed.

For the front side, the electrical shading is fully simulated as defined in the 3D scene.