Hello, I am trying to use EnergyPlus to accurately model the diurnal temperature profile of a rooftop photovoltaic solar panel. I have created a shade surface on my roof, with the proper orientation and tilt angle. I also created a Generator:photovoltaic object which is assigned to this surface and uses the sandia performance model. This appears to model the daytime performance accurately, but does not allow for any nighttime cooling below ambient (due to long wave radiation to the night sky).
Is there a way to achieve this? It seems if I used the "integrated surface outside face" heat transfer integration mode it would allow for long wave cooling. However, my shade surface does not have any material properties, heat capacity, density, etc - and therefore would not be interacting with the PV energy balance. Is it possible to model a heat transfer surface that is detached from the building? Any examples that illustrate this would be greatly appreciated.