Hi All,
Iâ??m going to use EnergyPlus to model single-sided ventilation and I want to find if I change the facade of a building (opening, materials etc.), how ACH (Air Change Rate per Hour) changes.
My problem is that I donâ??t know the level of accuracy for prediction of single-sided natural ventilation with the â??airflownetworkâ?? objects in EnergyPlus.
The most important inputs for me are: wind pressure coefficients and discharge coefficient
I know I have two options for the WPCs: input or calculated.
For input: it is impossible for me to run CFD for each simulation and input the WPCs manually as I have hundreds of simulations with different facades. (Iâ??m using Genetic Algorithm)
For calculated: I am wondering if the results that I get using this method are trustable as it uses an average WPC for the surface.
AND for the discharge coefficients, I have no idea!
Your help is much appreciated!
Cheers,
Samin