sunpeek.components.types.calculate_eta0hem#

sunpeek.components.types.calculate_eta0hem(eta0b, kd)#

Calculate hemispherical peak collector efficiency eta_0hem from beam peak eta0b and diffuse IAM kd.

Parameters:

  • eta0b (beam peak collector efficiency based on QDT test)

  • kd (diffuse incidence angle modifier)

Notes

This method is based on the QDT-SST conversion formulas in ISO 9806 Annex B. Note: This essentially assumes a fixed diffuse irradiance ratio of 15%.

Return type:

Tuple[Quantity, str]

Returns:

  • eta0hem (pint.Quantity, The calculated hemispherical peak collector efficiency)

  • info (string, information on calculation method used)

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