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Hello, Thank you for your reply. I have some new questions. When I run the model for the whole year simulation, some warnings occured, and repeat many times. One of the warnings is listed below:
** Warning ** SimHVAC: Maximum iterations (30) exceeded for all HVAC loops, at WHOLE YEAR, 02/12 12:21 - 12:24
** ~~~ ** SimFlags=[TFFFFFFF] AirLoops[T],ZoneEq[F],NonZoneEq[F],PlantLoops[F],CondLoops[F],ElecCircuits[F],PlantDemandLoops[F],CondDemandLoops[F]..F=ok,T=fail
** ~~~ ** HVAC Tolerance Flags=[0000000] Enthalpy[0],MassFlow[0],HumRat[0],Pressure[0],FlowQual[0],Energy[0],Temp[0]..0=ok,1=fail
** ~~~ ** HVAC Tolerance Values, Most Recent listed first
** ~~~ ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** HVAC side outlet node=[191 - OFF VAV SYS9 RETURN AIR OUTLET]
** ~~~ ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** HVAC side outlet node=[190 - OFF VAV SYS8 RETURN AIR OUTLET]
** ~~~ ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** HVAC side outlet node=[189 - OFF VAV SYS7 RETURN AIR OUTLET]
** ~~~ ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000,
TempTol=0.00
** ~~~ ** HVAC side outlet node=[188 - OFF VAV SYS6 RETURN AIR OUTLET]
** ~~~ ** HVAC EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** HVAC side outlet node=[187 - OFF VAV SYS5 RETURN AIR OUTLET]
** ~~~ ** Plant Tolerance Flags=[00000000] Enthalpy[0],MassFlow[0],HumRat[0],Pressure[0],FlowQual[0],Energy[0],Temp[0],PlantFlowMassFlow[0]..0=ok,1=fail
** ~~~ ** Plant Tolerance Values, Most Recent listed first
** ~~~ ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~
** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** Plant side outlet node=[98 - CHILLED WATER LOOP CNDW DEMAND OUTLET2]
** ~~~ ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** Plant side outlet node=[86 - CHILLED WATER LOOP CNDW DEMAND OUTLET1]
** ~~~ ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** Plant side outlet node=[93 - CHILLED WATER LOOP CNDW DEMAND INLET2]
** ~~~ ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** Plant side outlet node=[81 - CHILLED WATER LOOP CNDW DEMAND INLET1]
** ~~~ ** Plant EnthalpyTol=0.000, MassFlowTol=0.000, HumRatTol=0.0000, PressureTol=0
** ~~~ ** FlowQualTol=0.00, EnergyTol=0.000, TempTol=0.00
** ~~~ ** Plant side outlet node=[98 - CHILLED WATER LOOP CNDW DEMAND OUTLET2]
** ~~~ ** Plant Flow Tolerance Values, Most Recent listed first
** ~~~ ** PlantFlowFlowTol=0.000
** ~~~ **
PlantFlowFlowTol=0.000
** ~~~ ** PlantFlowFlowTol=0.000
** ~~~ ** PlantFlowFlowTol=0.000
** ~~~ ** PlantFlowFlowTol=0.000
You can see more information from the attachment. I wonder why these occured. Thank you!
loong |