.Buildings.HeatTransfer.Windows.BaseClasses.AbsorbedRadiation

Absorbed radiation by window

Information

The model calculates absorbed solar radiation on the window. The calculations follow the description in Wetter (2004), Appendix A.4.3.

The absorbed radiation by exterior shades includes:

  1. the directly absorbed exterior radiation: AWin*uSha*(HDir+HDif)*(1-tau-rho)
  2. the indirectly absorbed exterior radiantion from reflection (angular part): AWin*uSha*HDir*tau*rho(IncAng)*(1-tau-rho)
  3. the indirectly absorbed of exterior irradiantion from reflection (diffusive part): AWin*uSha*HDif*tau*rho(HEM)*(1-tau-rho)
  4. the absorbed interior radiation is neglected.

The output is absRad[2, 1]

The absorbed radiation by interior shades includes:

  1. the absorbed exterior radiation (angular part): AWin*uSha*HDir*alpha(IncAng)
  2. the absorbed exterior radiation (diffusive part): AWin*uSha*HDif*alpha(HEM)
  3. the absorbed interior radiation (diffusive part): AWin*uSha*HRoo*(1-tau-rho)

The output is absRad[2, N+2]

The absorbed radiation by glass includes:

  1. the absorbed radiation by unshaded part (diffusive part): AWin*(1-uSha)*(HDif*alphaEx(HEM)+HRoo*alphaIn(HEM))
  2. the absorbed radiation by unshaded part (angular part from exterior source): AWin*(1-uSha)*HDir*alphaEx(IncAng)
  3. the absorbed radiaiton by shaded part (diffusive part): AWin*uSha*(HDif*alphaExSha(HEM)+HRoo*alphaInSha(HEM))
  4. the absorbed radiation by shaded part (angular part from exterior source): AWin*uSha*HDir*alphaExSha(IncAng)

The output is absRad[1, 2:N+1] = Part1 + Part2; absRad[2, 2:N+1] = Part3 + Part4

References

Revisions


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