captest.calcparams.bom_temp

captest.calcparams.bom_temp(data, poa=None, temp_amb=None, wind_speed=None, module_type='glass_cell_poly', racking='open_rack', verbose=True)

Calculate back of module temperature from measured weather data.

Calculate back of module temperature from POA irradiance, ambient temperature, wind speed (at height of 10 meters), and empirically derived heat transfer coefficients.

Equation from NREL Weather Corrected Performance Ratio Report.

Parameters:

  • data (DataFrame) – DataFrame with the source data for calculations. Usually the data attribute of a CapData instance.

  • poa (str) – Column name for POA irradiance in W/m^2.

  • temp_amb (str) – Column name for Ambient temperature in degrees C.

  • wind_speed (str) – Column name for Measured wind speed (m/sec) corrected to measurement height of 10 meters.

  • module_type (str, default 'glass_cell_poly') – Any of glass_cell_poly, glass_cell_glass, or ‘poly_tf_steel’.

  • racking (str, default 'open_rack') – Any of ‘open_rack’, ‘close_roof_mount’, or ‘insulated_back’

Returns:

Back of module temperatures.

Return type:

numeric or Series