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Hello there,

I'm modelling a single-vented flat in EnergyPLus using the AFN. The flat has only one wall ( with two windows on it) exposed to outdoors;

Hence, the three surfaces (the wall and two windows) have the same WindPressureCoefficientValues object.

When I run the simulation, I get the following severe error:

The same Wind Pressure Coefficient Curve name is used in all AirflowNetwork:MultiZone:ExternalNode objects. Please input at least two different Wind Pressure Coefficient Curve names to avoid single side boundary condition.

What does this mean? Does it mean that somehow the air entering the flat must be exhausted to outdoors?

Regards,

Kostas

Hello there,

I'm modelling a single-vented flat in EnergyPLus using the AFN. The flat has only one wall ( with two windows on it) exposed to outdoors;

Hence, the three surfaces (the wall and two windows) have the same WindPressureCoefficientValues object.

When I run the simulation, I get the following severe error:

The same Wind Pressure Coefficient Curve name is used in all AirflowNetwork:MultiZone:ExternalNode objects. Please input at least two different Wind Pressure Coefficient Curve names to avoid single side boundary condition.

What does this mean? Does it mean that somehow the air entering the flat must be exhausted to outdoors?

Regards,

Kostas

Hello there,

I'm modelling a single-vented flat in EnergyPLus using the AFN. The flat has only one wall ( with two windows on it) exposed to outdoors;

Hence, the three surfaces (the wall and two windows) have the same WindPressureCoefficientValues object.

When I run the simulation, I get the following severe error:

The same Wind Pressure Coefficient Curve name is used in all AirflowNetwork:MultiZone:ExternalNode objects.
 Please input at least two different Wind Pressure Coefficient Curve names to avoid single side boundary condition.
condition.