I am seeing unexpected results in the breakdown of thermal gains and losses. The attached script demonstrates the question with a simple text box model:
Unexpected Thermal GainsLosses.gh (666.0 KB)
Often, when I make one simple change (in this case changing only the wall insulation value), I see changes in other thermal gains + loss categories that do not make sense. Usually People Gain, Equip Gain, Lighting Gains, and Solar Gains remain as expected (when modifying parameters that should not affect these), but a number of the losses (such as Infiltration, Roof, Floor and Window transmission) show modified values when these parameters should not be affected by the change.
See below for the results of a Baseline run (using R-30 walls) and a second run (with the only change being R-10 walls). The highlighted values are all ones that should not be affected by this change but show increases or decreases in energy.
Any ideas why this would be happening?