I am modelling a fan powered desiccant dehumidifier to control the humidity in a zone adjacent to a large zone with predominately high temperature and relatively lower humidity. The desiccant dehumidifier features face and bypass dampers on the desiccant wheel with its own supply fan rated at 2250 cfm. The conditioned air enters a return air mixer connected to a air handling unit with heating and cooling coils an its own supply fan rated at 3500 cfm. The air handling unit heats or cools to maintain the zone setpoint temperature. In the off mode the desiccant dehumidifier is isolated from the air handling unit air loop. The desiccant dehumidifier maintains the zone humidity by modulating the face and bypass dampers. As there are no supply side splitters in and mixers in the supply side equipment in EnergyPlus other than an outdoor air mixer, I have simplified the model of the system such that there is no face and bypass on the desiccant wheel and there is only when supply fan rated at 2250 cfm and there are no isolation dampers and the there is no return air mixer between the dehumidifier and the air handling unit.
How do I model the regen air from the adjacent zone where the standard method is to use outdoor air? I am currently looking at the AirflowNetwork objects in EnergyPlus possibly using the RoomAirNode:AirflowNetwork object for the adjacent zone.C:\fakepath\Image (231).jpg
