.AixLib.Fluid.SolarCollectors.BaseClasses.IAM

Information

Overview

This function computes the incidence angle modifier for solar irradiation striking the surface of the solar thermal collector. It is calculated using cubic spline interpolation and measurement data for the incident angle modifier provided in data sheets.

References

EnergyPlus 23.2.0 Engineering Reference

Interface

function IAM
  extends Modelica.Icons.Function;
  input Modelica.Units.SI.Angle incAng "Incident angle";
  input Modelica.Units.SI.Angle[:] incAngDat "Incident angle data";
  input Real[size(incAngDat, 1)] incAngModDat(each final min = 0, each final max = 1, each final unit = "1") "Incident angle modifier data";
  input Real[size(incAngDat, 1)] dMonotone "Incident angle modifier spline derivatives";
  output Real incAngMod "Incident angle modifier coefficient";
end IAM;

Revisions

• February 28, 2024, by Jelger Jansen:
  Refactor model.
  This is for Buildings, #3604.
• May 31, 2017, by Michael Wetter and Filip Jorissen:
  Change limits for incident angle modifier to avoid dip in temperature at shallow incidence angles.
  This is for issue 785.
• November 20, 2014, by Michael Wetter:
  Added missing protected keyword.
• May 22, 2012, by Wangda Zuo:
  First implementation.