blockDiffuseIsotropic
Diffuse solar irradiation on a tilted surface with an isotropic model
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Information
This component computes the hemispherical diffuse irradiation on a tilted surface. The irradiation is composed of the diffuse horizontal solar irradiation and the irradiation that has been reflected by the ground. Both components are adjusted to take into account the tilt of the receiving surface.
References
P. Ineichen, R. Perez and R. Seals (1987). The Importance of Correct Albedo Determination for Adequately Modeling Energy Received by Tilted Surface, Solar Energy, 39(4): 301-305.Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | rho | 0.2 | Ground reflectance |
| Modelica.Units.SI.Angle | til | Surface tilt angle |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | HDifHor | Horizontal diffuse solar radiation | |
| Modelica.Blocks.Interfaces.RealInput | HGloHor | Horizontal global radiation | |
| Modelica.Blocks.Interfaces.RealOutput | HGroDifTil | Diffuse solar irradiation on a tilted surface from the ground | |
| Modelica.Blocks.Interfaces.RealOutput | HSkyDifTil | Diffuse solar irradiation on a tilted surface from the sky |
Revisions
-
June 6, 2012, by Wangda Zuo:
Separated the contributions from the sky and the ground. -
May 24, 2010, by Wangda Zuo:
First implementation.