outdoor dry bulb temperature differs from epw file [closed]
I'm doing a simulation with OpenStudio and EnergyPlus. After the simulation I used Design Builder Result Viewer to graph "Site Outdoor Air Drybulb Temperature" and in the graph seem to be some data missing because there is 3 days with a constant temperature of -2.3°C, 12.6°C and 6,8°C in the middle of the summer. However I opened the EPW file in Elements and everything looks fine in those days and in the minimum/max Dry Bulb Temperatures for each month. Note: I'm in southern hemisphere, so summer is from december to march.
Is it possible that you are seeing the results for 3 design days specified in the model?
I believe Design Builder Result Viewer used to combine the design days into the annual results. You could try to view the eplusout.sql in excel or Dview to confirm.
I just deleted the design days and re-run the simulation and the problem is gone.I think this is not a problem for me because I only want the load for the building and I'm no sizing any system. However, shows me that I have no idea how design days work because I though they had no influence on the building simulation and the only purpose was to size equipment. Thank you guys.