Hi @Sobrado ,
This is easy to do if you are on Windows with the latest development version of the plugin where you can import the OpenStudio SDK to Python like so:
sample_editing_osm_conv_alg.gh (58.8 KB)
The way that the comfort mapping recipes compute operative temperature is more sophisticated than the Zone MRT output from EnergyPlus. Maybe we can eventually make this type of convection algorithm and corresponding effect of radiant barriers on MRT a part of the comfort mapping recipes. The ultimate effect on the perceived operative temperature might not be a large as you think, though. It’s true that the surface temperature is physically different because of an exposed Low-E radiant barrier but, because it has a low emissivity, it does not participate as much in the longwave heat exchange with the occupants. In some of the tests that I did with interior Low-E coatings on windows, the ultimate impact on occupant-perceived operative temperature was not very different from a surface without the barrier. Still, I imagine there could be some special cases where it makes a larger difference.