Hello. I'm attempting to model an hvac system with the outdoor air intake having a temperatures a set number of degrees cooler than the weather file. My current strategy is using the EvaporativeCooler:Direct:ResearchSpecial object with the follow outdoor air setpoint manager. When I check the node temperatures at the inlet and outlet nodes of the cooler, there isn't a temperature difference. I can't figure out what I'm doing wrong. I'd appreciate it if anyone has any ideas. Here's the pertinent text from the idf:
!- =========== ALL OBJECTS IN CLASS: EVAPORATIVECOOLER:DIRECT:RESEARCHSPECIAL ===========
EvaporativeCooler:Direct:ResearchSpecial,
OS:EvaporativeCooler:Direct:ResearchSpecial, !- Name
Always On Discrete 1, !- Availability Schedule Name
1, !- Cooler Effectiveness
0, !- Recirculating Water Pump Power Consumption {W}
Node 6, !- Air Inlet Node Name
Node 38, !- Air Outlet Node Name
Node 38, !- Sensor Node Name
, !- Water Supply Storage Tank Name
0, !- Drift Loss Fraction
2; !- Blowdown Concentration Ratio
!- =========== ALL OBJECTS IN CLASS: SETPOINTMANAGER:FOLLOWOUTDOORAIRTEMPERATURE ===========
SetpointManager:FollowOutdoorAirTemperature,
Follow Outdoor Air Temperature, !- Name
Temperature, !- Control Variable
OutdoorAirDryBulb, !- Reference Temperature Type
-10, !- Offset Temperature Difference {deltaC}
80, !- Maximum Setpoint Temperature {C}
-5, !- Minimum Setpoint Temperature {C}
Node 38; !- Setpoint Node or NodeList Name
!- =========== ALL OBJECTS IN CLASS: OUTPUT:VARIABLE ===========
Output:Variable,
Node 38, !- Key Value
System Node Temperature, !- Variable Name
Hourly; !- Reporting Frequency
Output:Variable,
Node 6, !- Key Value
System Node Temperature, !- Variable Name
Hourly; !- Reporting Frequency
