Check the supply air flow inputs in the AirLoopHVAC:UnitaryHeatPump:AirToAir object
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Miroslav Bratanov
Sent: Tuesday, February 26, 2013 11:11 AM
To: EnergyPlus Support
Subject: [EnergyPlus_Support] Air flow rate error
Hello all,
I can't understand what exactly is causing this error:
** Severe ** AirLoopHVAC:UnitaryHeatPump:AirToAir = PSZ HP F014 HEAT PUMP
** ~~~ ** ... air flow rate = 2.9490954E-002 in fan object PSZ HP F014 SUPPLY FAN is less than the maximum HVAC system air flow rate in cooling mode.
** ~~~ ** The Supply Air Flow Rate During Cooling Operation is reset to the fan flow rate and the simulation continues.
** Severe ** AirLoopHVAC:UnitaryHeatPump:AirToAir = PSZ HP F014 HEAT PUMP
** ~~~ ** ... air flow rate = 2.9490954E-002 in fan object PSZ HP F014 SUPPLY FAN is less than the maximum HVAC system air flow rate in heating mode.
** ~~~ ** The Supply Air Flow Rate During Heating Operation is reset to the fan flow rate and the simulation continues.
The total cooling capacity is 488.18 W, so the maximum air flow rate should be 488.18*0.00006041 = 0.029490954 m3/s
Any suggestions?
Thank you!
Miroslav
==============================
This is how the objects are defined in the .idf file:
Branch,
PSZ HP F014 Main Branch, !- Name
0.02940954, !- Maximum Flow Rate {m3/s}
, !- Pressure Drop Curve Name
AirLoopHVAC:OutdoorAirSystem, !- Component 1 Object Type
PSZ HP F014 OA System, !- Component 1 Name
PSZ HP F014 Air Loop Inlet, !- Component 1 Inlet Node Name
PSZ HP F014 Mixed Air Outlet, !- Component 1 Outlet Node Name
Passive, &
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