pvlib.pvsystem.sapm_celltemp¶
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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, default ‘open_rack_cell_glassback’
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.
See also
References
[1] King, D. et al, 2004, “Sandia Photovoltaic Array Performance Model”, SAND Report 3535, Sandia National Laboratories, Albuquerque, NM.