AIRFLOWNETWORK:MULTIZONE:COMPONENT:SIMPLEOPENING

This object specifies the properties of air flow through windows and doors (window, door and glass door heat transfer subsurfaces) when they are closed or open.

Name

Type: alphanumeric
Enter a unique name for this object.

Air Mass Flow Coefficient When Opening is Closed

Type: real number
Defined at 1 Pa pressure difference. Enter the coefficient used in the following equation: Mass Flow Rate = Air Mass Flow Coefficient * (dP)^Air Mass Flow Exponent. Used only when opening (window or door) is closed.
Unit: kg/s-m

Air Mass Flow Exponent When Opening is Closed

Type: real number
Enter the exponent used in the following equation: Mass Flow Rate = Air Mass Flow Coefficient * (dP)^Air Mass Flow Exponent. Used only when opening (window or door) is closed.
Unit: dimensionless
Minimum: 0.5
Maximum: 1.0
Default: .65

Minimum Density Difference for Two-Way Flow

Type: real number
Enter the minimum density difference above which two-way flow may occur due to stack effect.
Unit: kg/m3

Discharge Coefficient

Type: real number
The Discharge Coefficient indicates the fractional effectiveness for air flow through a window or door at that Opening Factor.
Unit: dimensionless