[EnergyPlus_Support] Shading calculations

["Peter G. Loutzenhiser" <post@xxxxxxxxxxx>]

Dear All,

Does anyone know how the calculations are made in EnergyPlus for an air gap 
between a window and exterior shading device.  I see this reference to standard 
ISO 15099 (I am looking at the final draft) but when looking at the standard, 
it says to assume a forced convection model and says to calculate the airflow 
rate by using an experiment or CFD.  But in EnergyPlus, there are various 
inputs (side permuability, etc) that seem to indicate that it is using some 
sort of model not described by the standard.  I have the source code, so if 
someone could kindly point me to correct subroutine or provide a reference for 
this calculation, I would be most greatful!

Many thanks in advance.

Peter Loutzenhiser






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