pvperfsolar performance modeling

Reference

API field

SAPM ΔT

The difference between the cells and the module back at 1000 W/m²; empty = King's table

Unit °C

What it is

The temperature difference between the cells and the back of the module at 1000 W/m² in King's Sandia (SAPM) model; the difference scales with the irradiance. Used only by the SAPM model. Give a, b and ΔT together. If not given, King's table by racking and module (see SAPM coefficient a).

Typical values and how to get it

Leave it empty for King's table; 3 °C on open racks, 1 °C close to a roof.

References

  1. King, Boyson & Kratochvil 2004, Photovoltaic Array Performance Model, Sandia report SAND2004-3535
  2. pvlib-python 0.16.1 source code (github.com/pvlib/pvlib-python), reference implementation: pvlib/temperature.py, sapm_cell() and fuentes()

API

thermal.sapm_delta_t