modelRadiationConvertorSimplified
Converts east-south-west radiation into diffuse and direct component, without complex algebraic loop
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Information
This block computes the main solar irradiation components using solar irradiation measurements from the east, south and west oriented sensors.
This model is an approximation. A more accurate implementation, which inverts the Perez model, can be found in IDEAS.Examples.TwinHouses.BaseClasses.RadiationConvertorPerez. However the algebraic loop in this model does not always have a solution.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Angle | lat | Latitude | |
| Real | lon | Longitude | |
| Real | rho | {0.3, 0.3, 0.3} | Ground reflectance for east, south, west |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | HEast | Total solar irradiation on a plane facing east | |
| Modelica.Blocks.Interfaces.RealInput | HSouth | Total solar irradiation on a plane facing south | |
| Modelica.Blocks.Interfaces.RealInput | HWest | Total solar irradiation on a plane facing west | |
| Modelica.Blocks.Interfaces.RealOutput | HDirHor | Direct solar irradation on a horizontal surface | |
| Modelica.Blocks.Interfaces.RealOutput | HDirNor | Direct solar irradiation on a plane normal to the sun rays | |
| Modelica.Blocks.Interfaces.RealOutput | HDifHor | Diffuse solar irradiation on a horizontal surface | |
| Modelica.Blocks.Interfaces.RealInput | decAng | Declination angle | |
| Modelica.Blocks.Interfaces.RealInput | solHouAng | Solar hour angle |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| IDEAS.Utilities.Math.Min | Hmin | Minimum radiation on surfaces: everything except direct solar radiation |
Revisions
-
January 17, 2017, by Filip Jorissen:
First implementation.