Hi,
Currently I am trying to model 4 dedicated outdoor air systems, all of them having the same layout. This is for a school project in which the building has two stories, with 2 DOAS for each story. Each DOAS is associated with roughly 15-30 unique thermal zones. The DOAS layout has a water cooling coil > water heating coil > variable fan then branches out to the associated thermal zone (each zone having a “single duct constant volume four pipe beam”). All of the fields for the AirTerminal:SingleDuct:ConstantVolume:FourPipeBeam have been left standard. An “AEDG Hot Water Loop” has been set with the “OS:Coil:Heating:FourPipeBeam,” and an “AEDG Chilled Water Loop” has been set with the “OS:Coil:Cooling:FourPipeBeam.”
The simulation runs with no errors except there being a large amount of unmet hours. Does anyone know what might be causing the high unmet hours and what might resolve this? May it have something to do with the DOAS supply air temperature?
