Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
@QCeng In your IDF, "Outdoor Air Inlet Node" is defined as an OutdoorAir:Node object type, which tells EnergyPlus that specific node in the model matches weather data.
OutdoorAir:Node,
Outdoor Air Inlet Node; ! Name
"Outdoor Air Outlet Node" is what's picked up heat from the condenser and rejected outdoors, so it's just a node name for reference and not connected to any other HVAC component or EnergyPlus object. You can request system node output variables (flow rate, temperature, etc.) for "Outdoor Air Outlet Node" to confirm that it is at a different state than "Outdoor Air Inlet Node" when the heat pump operates.
