Revision history [back]

What I observed:

• Autosized DX cooling coil capacity = Autosized DX heating coil capacity = MAX(Peak cooling load,Peak heating load)
• Autosized supplemental heating coil capacity is calculated based on the followings.
  1. autosized airflow rate in the DX cooling coil and heating coil sizing
  2. delta T = (Zone Heating Design Supply Air Temperature in Sizing:Zone) - (Maximum Dry-Bulb Temperature for WinterDesignDay in SizingPeriod:DesignDay)

I don't think either is appropriate. The DX cooling coil capacity and the DX heating coil capacity do not have to be identical. They are different in the real world. Moreover, they are separate objects in EnergyPlus. The supplement heating coil capacity is excessively large due to the unreasonable assumption that all the supply air is fresh air. I'll post on github as bugs.