captest.calcparams.cell_temp

captest.calcparams.cell_temp(data, bom, poa, module_type='glass_cell_poly', racking='open_rack', verbose=True)

Calculate cell temp from BOM temp, POA, and heat transfer coefficient.

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.

  • bom (str) –

    Column name for back of module temperature (degrees C). Strictly following the NREL procedure this value would be obtained from the back_of_module_temp function.

    Alternatively, a measured BOM temperature may be used.

    Refer to p.7 of NREL Weather Corrected Performance Ratio Report.

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

  • 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’

  • verbose (bool, default True) – By default prints explanation of calculation. Set to False for no output message.

Returns:

Cell temperatures.

Return type:

Series