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Denote Faiman default coefficients are for module temperature #2607

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Merged
kandersolar merged 2 commits into from
Dec 3, 2025
Merged

Denote Faiman default coefficients are for module temperature #2607

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1e417fe
Denote Faiman default coefficients are for module temperature
IoannisSifnaios Dec 3, 2025
ec83b55
Same update for faiman_rad
IoannisSifnaios Dec 3, 2025
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16 changes: 8 additions & 8 deletions pvlib/temperature.py
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Original file line number Diff line number Diff line change
Expand Up @@ -456,14 +456,14 @@ def faiman(poa_global, temp_air, wind_speed=1.0, u0=25.0, u1=6.84):
speed at module height used to determine NOCT. [m/s]

u0 : numeric, default 25.0
Combined heat loss factor coefficient. The default value is one
determined by Faiman for 7 silicon modules
Combined heat loss factor coefficient. The default value is for module
temperature determined by Faiman for 7 silicon modules
in the Negev desert on an open rack at 30.9° tilt.
:math:`\left[\frac{\text{W}/{\text{m}^2}}{\text{C}}\right]`

u1 : numeric, default 6.84
Combined heat loss factor influenced by wind. The default value is one
determined by Faiman for 7 silicon modules
Combined heat loss factor influenced by wind. The default value is
for module temperature determined by Faiman for 7 silicon modules
in the Negev desert on an open rack at 30.9° tilt.
:math:`\left[ \frac{\text{W}/\text{m}^2}{\text{C}\ \left( \text{m/s} \right)} \right]`

Expand Down Expand Up @@ -539,14 +539,14 @@ def faiman_rad(poa_global, temp_air, wind_speed=1.0, ir_down=None,
surface. [W/m^2]

u0 : numeric, default 25.0
Combined heat loss factor coefficient. The default value is one
determined by Faiman for 7 silicon modules
Combined heat loss factor coefficient. The default value is for module
temperature determined by Faiman for 7 silicon modules
in the Negev desert on an open rack at 30.9° tilt.
:math:`\left[\frac{\text{W}/{\text{m}^2}}{\text{C}}\right]`

u1 : numeric, default 6.84
Combined heat loss factor influenced by wind. The default value is one
determined by Faiman for 7 silicon modules
Combined heat loss factor influenced by wind. The default value is for
module temperature determined by Faiman for 7 silicon modules
in the Negev desert on an open rack at 30.9° tilt.
:math:`\left[ \frac{\text{W}/\text{m}^2}{\text{C}\ \left( \text{m/s} \right)} \right]`

Expand Down