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[EnergyPlus_Support] Re: Inserting Fan:ZoneExhaust into AFN zone



Dear Group,

I have split my roof detailed areas so that each fan:zoneexhaust is on its
own surface with own crack surface and properties defined. Still I get the
same error.
I have uploaded my actual file with revised objects, to the help desk...but for the rest of you there's a snip bit below.

I have included following AFN things:
- seperate BuildingSurface:Detailed objects for the fan roof penetrations
- seperate AirflowNetwork:MultiZone:Surface for each fan roof penetration
- seperate AirflowNetwork:MultiZone:ExternalNode nodes for each fan
- seperate AirflowNetwork:MultiZone:Component:ZoneExhaustFan for each fan
- new AirflowNetwork:MultiZone:Surface:EffectiveLeakageArea
- new AirflowNetwork:MultiZone:WindPressureCoefficientValues
- new AirflowNetwork:MultiZone:ReferenceCrackConditions


** Severe ** AirflowNetwork:MultiZone:Component:ZoneExhaustFan = 118204
XFAN1 WC is defined and never used.
** Severe ** AirflowNetwork:MultiZone:Component:ZoneExhaustFan = 118204
XFAN2 WC is defined and never used.
** Severe ** AirflowNetwork:MultiZone:Component:ZoneExhaustFan = 118386
XFAN1 WC is defined and never used.
** Severe ** AirflowNetwork:MultiZone:Component:ZoneExhaustFan = 118386
XFAN2 WC is defined and never used.
** Severe ** AirflowNetwork:MultiZone:Component:ZoneExhaustFan = 118403
XFAN1 WC is defined and never used.


Ticket Details
> ===================
> Ticket ID: 4618
> Department: General
> Priority: Medium
> Status: Open

  ZoneHVAC:EquipmentConnections,
    118204,                  !- Zone Name
    118204Equipment,         !- Zone Conditioning Equipment List Name
    118204 Zone Equip Inlet, !- Zone Air Inlet Node or NodeList Name
    118204 WC Exhaust Air Nodes List,                        !- Zone Air Exhaust Node or NodeList Name
    118204 Zone Air Node,    !- Zone Air Node Name
    118204 Return Outlet;    !- Zone Return Air Node Name
    
  NodeList,
    118204 WC Exhaust Air Nodes List,
    118204 WC Exhaust Air Node1,
    118204 WC Exhaust Air Node2; !- Node ID
    

    
  AirflowNetwork:MultiZone:WindPressureCoefficientValues,
    HorizontalWPC,     !- Name
    Cp Data,        !- AirflowNetwork:MultiZone:WindPressureCoefficientArray Name
    0.00,                    !- Wind Pressure Coefficient Value 1 {dimensionless}
    0.00,                    !- Wind Pressure Coefficient Value 2 {dimensionless}
    0.00,                    !- Wind Pressure Coefficient Value 3 {dimensionless}
    0.00,                    !- Wind Pressure Coefficient Value 4 {dimensionless}
    0.00,                    !- Wind Pressure Coefficient Value 5 {dimensionless}
    0.00,                    !- Wind Pressure Coefficient Value 6 {dimensionless}
    0.00,                    !- Wind Pressure Coefficient Value 7 {dimensionless}
    0.00;                    !- Wind Pressure Coefficient Value 8 {dimensionless}     
    
  AirflowNetwork:MultiZone:Surface,
    R_118204_6_1_7_xfan1,   !- Surface Name
    118204 WC,         !- Leakage Component Name
    R_118204_6_1_7_xfan1 ODA Node,                 !- External Node Name
    1.0;                     !- Window/Door Opening Factor, or Crack Factor {dimensionless}
    
  !Node Required per Surface
   AirflowNetwork:MultiZone:ExternalNode,
    R_118204_6_1_7_xfan1 ODA Node,!- Name
    5.00,                    !- External Node Height {m}
    HorizontalWPC;!- Wind Pressure Coefficient Values Object Name    
    
  AirflowNetwork:MultiZone:Surface,
    R_118204_6_1_8_xfan2,   !- Surface Name
    118204 WC,         !- Leakage Component Name
    R_118204_6_1_8_xfan2 ODA Node,                 !- External Node Name
    1.0;                     !- Window/Door Opening Factor, or Crack Factor {dimensionless} 
    
 !Node Required per Surface
   AirflowNetwork:MultiZone:ExternalNode,
    R_118204_6_1_8_xfan2 ODA Node,!- Name
    5.00,                    !- External Node Height {m}
    HorizontalWPC;!- Wind Pressure Coefficient Values Object Name    
    
 AirflowNetwork:MultiZone:Surface:EffectiveLeakageArea,
    118204 WC,               !- Name
    0.002,                   !- Effective Leakage Area {m2}
    1.0,                     !- Discharge Coefficient {dimensionless}
    4.0,                     !- Reference Pressure Difference {Pa}
    0.667;                   !- Air Mass Flow Exponent {dimensionless}   
    
    AirflowNetwork:MultiZone:ReferenceCrackConditions,
    ReferenceCrackConditions,!- Name
    20.0,                    !- Reference Temperature {C}
    101325,                  !- Reference Barometric Pressure {Pa}
    0.0;                     !- Reference Humidity Ratio {kg/kg} 
    
      

  AirflowNetwork:MultiZone:Component:ZoneExhaustFan,
  118204 XFan1 WC, !- Name 
  0.01, !- Air Mass Flow Coefficient When the Zone Exhaust Fan is Off at Reference Conditions {kg/s}
  0.667, !- Air Mass Flow Exponent When the Zone Exhaust Fan is Off{dimensionless}
  ReferenceCrackConditions; !- Reference Crack Conditions
  
  AirflowNetwork:MultiZone:Component:ZoneExhaustFan,
  118204 XFan2 WC, !- Name 
  0.01, !- Air Mass Flow Coefficient When the Zone Exhaust Fan is Off at Reference Conditions {kg/s}
  0.667, !- Air Mass Flow Exponent When the Zone Exhaust Fan is Off{dimensionless}
  ReferenceCrackConditions; !- Reference Crack Conditions

  ZoneHVAC:EquipmentList,
    118204Equipment,         !- Name
    AirTerminal:SingleDuct:Uncontrolled,  !- Zone Equipment 1 Object Type
    118204AirTerminal:SingleDuct:Uncontrolled,  !- Zone Equipment 1 Name
    1,                       !- Zone Equipment 1 Cooling Sequence
    1,                                                       !- Zone Equipment 2 Heating or No-Load Sequence 
    Fan:ZoneExhaust,                                         !- Zone Equipment 2 Object Type
    118204 XFan1 WC,                            !- Zone Equipment 2 Name
    2,                                                       !- Zone Equipment 2 Cooling Sequence
    2,                                                       !- Zone Equipment 2 Heating or No-Load Sequence 
    Fan:ZoneExhaust,                                         !- Zone Equipment 2 Object Type
    118204 XFan2 WC,                            !- Zone Equipment 3 Name
    3,                                                       !- Zone Equipment 3 Cooling Sequence
    3;                                                       !- Zone Equipment 3 Heating or No-Load Sequence
    
    !!!!!!!!!!!!!!!Exhaust Fan WC Start

  Fan:ZoneExhaust,
    118204 XFan1 WC,     !- Name WC Exhaust Fan
    HVACTemplate-Always 1,   !- Availability Schedule Name
    0.7,                     !- Fan Efficiency
    142,                     !- Pressure Rise {Pa}
    0.0166666,            !- Mech ventilation (m3/s)      60 m³/h
    118204 WC Exhaust Air Node1,   !- Air Inlet Node Name
    118204 WC Outside Node1,  !- Air Outlet Node Name
    WC Exhaust;         !- End-Use Subcategory
!!!!!!!!!!!!!!!Exhaust Fan WC End

  Fan:ZoneExhaust,
    118204 XFan2 WC,     !- Name WC Exhaust Fan
    HVACTemplate-Always 1,   !- Availability Schedule Name
    0.7,                     !- Fan Efficiency
    142,                     !- Pressure Rise {Pa}
    0.0166666,            !- Mech ventilation (m3/s)      60 m³/h
    118204 WC Exhaust Air Node2,   !- Air Inlet Node Name
    118204 WC Outside Node2,  !- Air Outlet Node Name
    WC Exhaust;         !- End-Use Subcategory
!!!!!!!!!!!!!!!Exhaust Fan WC End





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