Sandia Module Temperature
This routine empirically computes the module temperature from the air temperature, the wind speed, and the in-plane irradiation. This model uses two empirically-determined coefficients: at establishes the upper limit for module temperature at low wind speeds and high solar irradiance, bt establishes the rate at which module temperature drops as wind speed increases.
Figure 34. Empirical Module Temperature Coefficients
1.) Compute the module temperature as a function of the available insolation, wind speed, and air temperature:
King, D. L., Kratochvil, J.A., Boyson, W.L., Photovoltaic Array Performance Model, Report SAND2004-3535, Sandia National Laboratories, Albuquerque, NM, September 1997.