functionHorizontalMask
Information
Function inspired by calculation of overhang effects described in ISO 13791 standard
Hypothesis and equations
Horizontal shading devices (near mask) are considered. See diagram below:
Bibliography
ISO 13791 standard
Instructions for use
none
Known limits / Use precautions
This function should only be called for an absolute value of Phi strictly lower than 90°, corresponding to the sun that reaches the window plane (abs(azimut-AzimutSoleil) ‹ 90).
Validations
Validated model (according the standard ISO13791-2004) - Aurélie Kaemmerlen 05/2011
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Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Aurélie KAEMMERLEN, EDF (2011)
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Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Distance | Av | Overhang | |
| Modelica.Units.SI.Distance | Ha | Distance between the overhang and the top of the surface (window) | |
| Modelica.Units.SI.Distance | Lf | Surface (window) width | |
| Modelica.Units.SI.Distance | Hf | Surface (window) height | |
| Modelica.Units.SI.Distance | Dd | Lateral overhang (right hand side) | |
| Modelica.Units.SI.Distance | Dg | Lateral overhang (left hand side) | |
| Modelica.Units.NonSI.Angle_deg | AzimutSoleil | Solar azimuth angle (orientation relative to the south) - S=0°, E=-90°, W=90°, N=180° | |
| Modelica.Units.NonSI.Angle_deg | HauteurSoleil | Solar elevation angle | |
| Modelica.Units.NonSI.Angle_deg | azimut | Surface tilt - downwards = 180° skyward = 0°, vertical = 90° |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Area | Asol | Sunny surface of the window |
Revisions
Aurélie Kaemmerlen 10/2011 : correction du modèle - Nouveau chemin de calcul suite à la détection d'erreurs détectées