modelRadiationConvertorSimplified
Converts east-south-west radiation into diffuse and direct component, without complex algebraic loop
Extends from Modelica.Blocks.Icons.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 |
Components
| 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 | |
| IDEAS.Utilities.Math.Min | Hmin | Minimum radiation on surfaces: everything except direct solar radiation | |
| 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 |
Revisions
-
January 17, 2017, by Filip Jorissen:
First implementation.