Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The Sensible Heat Gain Components report operates at the HVAC system timestep. When a zone temperature is changing quickly, EnergyPlus shortens the HVAC system simulation timestep. This typically occurs during morning recovery from setback. So, yes, the peak HVAC system sensible heating and cooling are happening during morning recovery on September 6 at 6:02 am and Jul 26 at 8:01 am standard time, which is likely 7:01 am clock time if daylight savings time is active. (All EnergyPlus timestamps are in standard time, DST simply shifts the schedules.)
To see this with the 5ZoneAirCooled example file, replace "hourly;" with "detailed;" and look at the csv variables output. The maximum value for "SPACE1-1:Zone Air System Sensible Heating Rate W" occurs at timestamp 02/25 06:01:52 and peak cooling is at 09/27 16:00:00. (Run with v9.2 and Chicago O'Hare TMY3 weather.)
