Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
First, a caveat. The component load summaries are estimates which attempt to separate out the many components which are blended together in the full zone heat balance. The total zone loads are the "real" answer. The methodology is described in the Engineering Reference "Component Loads Summary" section.
The surface loads are some of the most difficult to sort out. Surfaces can impact the load either because heat is flowing through the wall or because the wall is storing or releasing heat. The results in this report imply that the interzone walls are cooler than the zone cooling setpoint at the time of the peak cooling load. Run the sizing period (design day) simulation and report the inside and outside surface temperatures and see if this will explain the results. Also, check the timing of the peak cooling load. If it's in the morning during recovery from setback, that might explain these results. If you don't want to size for morning cooldown, then use a constant setpoint for the design day.
