pvlib.pvsystem.sapm_celltemp¶

pvlib.pvsystem.sapm_celltemp(poa_global, wind_speed, temp_air, model='open_rack_cell_glassback')[source]¶

Estimate cell and module temperatures per the Sandia PV Array Performance Model (SAPM, SAND2004-3535), from the incident irradiance, wind speed, ambient temperature, and SAPM module parameters.

Parameters:

poa_global : float or Series

Total incident irradiance in W/m^2.

wind_speed : float or Series

Wind speed in m/s at a height of 10 meters.

temp_air : float or Series

Ambient dry bulb temperature in degrees C.

model : string, list, or dict

Model to be used.

If string, can be:

‘open_rack_cell_glassback’ (default)

‘roof_mount_cell_glassback’

‘open_rack_cell_polymerback’

‘insulated_back_polymerback’

‘open_rack_polymer_thinfilm_steel’

‘22x_concentrator_tracker’

If dict, supply the following parameters (if list, in the following order):

a : float

SAPM module parameter for establishing the upper limit for module temperature at low wind speeds and high solar irradiance.

b : float

SAPM module parameter for establishing the rate at which the module temperature drops as wind speed increases (see SAPM eqn. 11).

deltaT : float

SAPM module parameter giving the temperature difference between the cell and module back surface at the reference irradiance, E0.

Returns:

DataFrame with columns ‘temp_cell’ and ‘temp_module’.

Values in degrees C.