modelSolarBC
Information
Calculation of solar irradiation for a simplified building model
Hypothesis and equations
This model allows the calculation of solar boundary conditions for the simplified building model. The simplified model has only 3 short wavelength inputs (SW):
- SW irradiance transmitted through glazings. It takes into account the beam incidence on the surface
- SW incident irradiance on glazings
- SW incident irradiance on external walls
The impact of beam incidence on the surface for the direct irradiance is taken into account through the parameters Choix and the model DirectTrans.
Bibliography
none
Instructions for use
none
Known limits / Use precautions
none
Validations
Validated model - Gilles Plessis 03/2013.--------------------------------------------------------------
Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Gilles PLESSIS, EDF (2013)
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Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | beta | 0 | Zone orientation azimut=beta+azimut, (if beta=0 : azimut={N=180,S=0,E=-90,O=90}) |
| Real | albedo | 0.2 | Albedo of the environment |
| Glazing | |||
| Modelica.Units.SI.Area | SurfacesVitrees | Glazed surface areas (Ceiling, North, South, East, West) | |
| Real | TrDir | 0.544 | Direct transmission coefficient on normal incidence |
| Real | TrDif | 0.544 | Diffuse transmission coefficient on normal incidence |
| Integer | choix | 2 | Formula used |
| Wall | |||
| Modelica.Units.SI.Area | SurfacesExterieures | Surface areas of external walls (Roof, North, South, East, West) | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| BuildSysPro.BoundaryConditions.Solar.Interfaces.SolarFluxOutput | FluxIncWall | Surface incident solar flux on external walls | |
| BuildSysPro.BoundaryConditions.Solar.Interfaces.SolarFluxOutput | FluxIncGlazing | Surface incident solar flux on glazings | |
| BuildSysPro.BoundaryConditions.Solar.Interfaces.SolarFluxOutput | FluxTrGlazing | Transmitted solar flux through glazings | |
| Modelica.Blocks.Interfaces.RealInput[10] | G | Inputs data {DIFH, DIRN, DIRH, GLOH, t0, CosDir[1:3], solar azimuth angle, solar elevation angle} |
Revisions
Gilles Plessis 12/2013 : Mise à jour des noms des paramètres SurfaceVitree->SurfacesVitrees et SurfaceExterieures->SurfacesExterieures
Benoît Charrier 05/2017 : Added specific TrDif coefficient for diffuse transmission