pvlib.temperature.sapm_cell#
- pvlib.temperature.sapm_cell(poa_global, temp_air, wind_speed, a, b, deltaT, irrad_ref=1000.0)[source]#
Calculate cell temperature per the Sandia Array Performance Model.
See 1 for details on the Sandia Array Performance Model.
- Parameters
- Returns
numeric, values in degrees C.
Notes
The model for cell temperature \(T_{C}\) is given by a pair of equations (Eq. 11 and 12 in 1).
(1)#\[T_{m} = E \times \exp (a + b \times WS) + T_{a}\](2)#\[T_{C} = T_{m} + \frac{E}{E_{0}} \Delta T\]The module back surface temperature \(T_{m}\) is implemented in
sapm_module()
.Inputs to the model are plane-of-array irradiance \(E\) (W/m2) and ambient air temperature \(T_{a}\) (C). Model parameters depend both on the module construction and its mounting. Parameter sets are provided in 1 for representative modules and mounting, and are coded for convenience in
TEMPERATURE_MODEL_PARAMETERS
.Module
Mounting
a
b
\(\Delta T [C]\)
glass/glass
open rack
-3.47
-0.0594
3
glass/glass
close roof
-2.98
-0.0471
1
glass/polymer
open rack
-3.56
-0.075
3
glass/polymer
insulated back
-2.81
-0.0455
0
References
- 1(1,2,3)
King, D. et al, 2004, “Sandia Photovoltaic Array Performance Model”, SAND Report 3535, Sandia National Laboratories, Albuquerque, NM.
See also
Examples
>>> from pvlib.temperature import sapm_cell, TEMPERATURE_MODEL_PARAMETERS >>> params = TEMPERATURE_MODEL_PARAMETERS['sapm']['open_rack_glass_glass'] >>> sapm_cell(1000, 10, 0, **params) 44.11703066106086