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[EnergyPlus_Support] Re: DOAS with fan coil
Here's a bit of code that includes
1) fancoil
2) the hvac part of the radiant system (not plant side or in which construction it is placed)
3) zone:exhaust object
-----------------------------------
ZoneHVAC:EquipmentConnections,
U12, !- Zone Name
U12Equipment, !- Zone Conditioning Equipment List Name
U12 Zone Inlet Nodes, !- List Name: Zone Air Inlet Nodes
U12 Exhaust Air Nodes, !- List Name: Zone Air Exhaust Nodes
U12 Zone Air Node, !- Zone Air Node Name
U12 Return Outlet; !- Zone Return Air Node Name
NodeList, !Zone Exhaust Outlets (not Airloop Return)
U12 Exhaust Air Nodes, !- Name
U12 WC Exhaust Air Node,
FC U12 Exhaust Air Node; !- Node 1 Name !Mixing Box to Zone connection AND FC air inlet node
NodeList, !Zone Inlets
U12 Zone Inlet Nodes, !- Name
U12 Supply Inlet,
U12 Heating Coil Air Outlet; !- Node 1 Name
OutdoorAir:NodeList,
FC U12 Outdoor Air Node; !- Node or NodeList Name 1
ZoneHVAC:EquipmentList,
U12Equipment, !- Name
ZoneHVAC:AirDistributionUnit, !- Zone Equipment 1 Object Type
U12 ATU, !- Zone Equipment 1 Name
4, !- Zone Equipment 1 Cooling Sequence
4, !- Zone Equipment 1 Heating or No-Load Sequence
ZoneHVAC:LowTemperatureRadiant:VariableFlow, !- Zone Equipment 2 Object Type
U12 RF, !- Zone Equipment 2 Name
1, !- Zone Equipment 2 Cooling Sequence
1, !- Zone Equipment 2 Heating or No-Load Sequence
Fan:ZoneExhaust, !- Zone Equipment 3 Object Type
U12 XFan WC, !- Zone Equipment 3 Name
3, !- Zone Equipment 3 Cooling Sequence
3, !- Zone Equipment 2 Heating or No-Load Sequence
ZoneHVAC:FourPipeFanCoil, !- Zone Equipment 3 Object Type
FC U12 Fan Coil, !- Zone Equipment 3 Name
2, !- Zone Equipment 3 Cooling Sequence
2; !- Zone Equipment 3 Heating or No-Load Sequence
ZoneHVAC:LowTemperatureRadiant:VariableFlow,
U12 RF, !- Name
On, !- Availability Schedule Name U12 RF Availability Sch
U12, !- Zone Name
U12_GroundFloor_0_0_0, !- Surface Name or Radiant Surface Group Name
0.012, !- Hydronic Tubing Inside Diameter {m}
autosize, !- Hydronic Tubing Length {m}
MeanAirTemperature, !- Temperature Control Type
autosize, !- Maximum HW Water Flow {m3/s}
U12 RF HW Inlet Node, !- HW Water Inlet Node Name
U12 RF HW Outlet Node, !- HW Water Outlet Node Name
0.50, !- Heating Control Throttling Range {deltaC}
RF Heating Supply Temperature, !- Heatinging Control Temperature Schedule Name
0.0, !- Maximum CW Water Flow {m3/s} !ChW is turned off
U12 RF Inlet, !- CW Water Inlet Node Name
U12 RF Outlet, !- CW Water Outlet Node Name
2.00, !- Cooling Control Throttling Range {deltaC}
U12 AHU Cooling SP Sch, !- Cooling Control Temperature Schedule Name
SimpleOff, ! condensation control type
0.0; ! condensation control dewpoint offset
!!!!!!!!!!!!!!!!!!FC START
ZoneHVAC:FourPipeFanCoil,
FC U12 Fan Coil, !- Name
FC Sch, !- Availability Schedule Name
ConstantFanVariableFlow, !- Capacity Control Method
30, !- maximum air flow rate {m3/s} !GET THE TOTAL FC m³/h ...this value gives realistic results
0.9, !- Low Speed Supply Air Flow Ratio
0.99, !- Medium Speed Supply Air Flow Ratio
0, !- maximum outside air flow rate {m3/s}
Off, !- Outside Air Schedule Name
FC U12 Exhaust Air Node, !- Air Inlet Node Name
U12 Heating Coil Air Outlet, !- Air Outlet Node Name
FC U12 Outdoor Air Node, !- Outdoor Air Node Name
FC U12 Relief Outlet, !- Relief Air Node Name
FC U12 OA Mixing Box, !- Outdoor Air Mixer Name
FC U12 Supply Fan, !- Fan Name
FC U12 Cooling Coil, !- Cooling Coil Name
0.0334, !- maximum cold water flow {m3/s}
0.0334, !- minimum cold water flow {m3/s}
0.001, !- Cooling Convergence Tolerance
FC U12 Heating Coil, !- Heating Coil Name
autosize, !- maximum hot water flow {m3/s}
0, !- minimum hot water flow {m3/s}
0.001, !- Heating Convergence Tolerance
Coil:Cooling:Water; !- Cooling Coil Object Type
OutdoorAir:Mixer,
FC U12 OA Mixing Box, !- Name
FC U12 Mixed Air Outlet, !- Mixed Air Node
FC U12 Outdoor Air Node, !- Outside Air Stream Node !needs its own connection to OD
FC U12 Relief Outlet, !- Relief Air Stream Node !not connected to Airloop
FC U12 Exhaust Air Node; !- Return Air Stream Node
Fan:ConstantVolume,
FC U12 Supply Fan, !- Fan Name
FC Sch, !- Availability Schedule Name
0.7, !- Fan Efficiency
75, !- Delta Pressure {Pa}
30, !- Max Flow Rate {m3/s}
0.9, !- Motor Efficiency
1, !- Motor in Airstream Fraction
FC U12 Mixed Air Outlet, !- Fan Inlet Node
FC U12 Supply Fan Outlet; !- Fan Outlet Node Name
Coil:Cooling:Water,
FC U12 Cooling Coil, !- Name
FC Sch, !- Availability Schedule Name
0.0334, !- Design Water Flow Rate of Coil {m3/s}
30, !- Design Air Volume Flow Rate {m3/s}
16, !- Design Inlet Water Temperature {C}
28, !- Design Inlet Air Temperature {C}
22, !- Design Outlet Air Temperature {C}
0.019, !- Design Inlet Air Humidity Ratio {kg-H2O/kg-air}
0.018, !- Design Outlet Air Humidity Ratio {kg-H2O/kg-air}
FC U12 Cooling Coil ChW Inlet, !- Coil Water Inlet Node
FC U12 Cooling Coil ChW Outlet, !- Coil Water Outlet Node
FC U12 Supply Fan Outlet, !- Air Inlet Node Name
FC U12 Cooling Coil Outlet, !- Air Outlet Node Name
DetailedAnalysis, !- Type of Analysis
CrossFlow; !- Heat Exchanger Configuration
Branch,
U12 FC Clg Branch, !- Name
0.0334, !- Maximum Flow Rate {m3/s} q = h[kW] / ((4.2 kgoC) (1000 kg/m3) dt) q = 561.850 / (4.2 * 1000 * 4)
, !- Pressure Drop Curve Name
Coil:Cooling:Water, !- Component 1 Object Type
FC U12 Cooling Coil, !- Component 1 Name
FC U12 Cooling Coil ChW Inlet, !- Component 1 Inlet Node Name
FC U12 Cooling Coil ChW Outlet, !- Component 1 Outlet Node Name
Active; !- Component 1 Branch Control Type
Coil:Heating:Water,
FC U12 Heating Coil, !- Name
On, !- Availability Schedule Name
autosize, !- UA of the Coil {W/K}
autosize, !- Max Water Flow Rate of Coil {m3/s}
FC U12 Heating Coil HW Inlet, !- Coil Water Inlet Node
FC U12 Heating Coil HW Outlet, !- Coil Water Outlet Node
FC U12 Cooling Coil Outlet, !- Air Inlet Node Name
U12 Heating Coil Air Outlet, !- Air Outlet Node Name
UFactorTimesAreaAndDesignWaterFlowRate, !- Performance Input Method
autosize, !- Rated Capacity
82.2, !- Rated Inlet Water Temperature
16.6, !- Rated Inlet Air Temperature
71.1, !- Rated Outlet Water Temperature
32.2, !- Rated Outlet Air Temperature
1.0; !- Rated Ratio for Air and Water Convection
!!!!!!!!!!!!!!!!!!FC END
!See HVAC
! 'BBI FGT Slab - U-1,48'
Construction:InternalSource,
RF_Slab, !- Name
2, !- Source Present After Layer Number
2, !- Temperature Calculation Requested After Layer Number
1, !- Dimensions for the CTF Calculation
0.1, !- Tube Spacing {m}
1_2_10003, !- BBI Slab 200 mm Cast Concrete (.2m)
1_1_103, !- XPS Extruded Polystyrene - CO2 Blowing (.0098m)
3_1_45; ! Aluminium806 - thickness 0,0015 solid 0% open
! 'BBI FGT Slab - U-1,48 <reverse>'
Construction,
RF_Slab_R, !- Name
1_2_10003, !- BBI Slab 200 mm Cast Concrete (.2m)
1_1_103, !- XPS Extruded Polystyrene - CO2 Blowing (.0098m)
3_1_45; ! Aluminium806 - thickness 0,0015 solid 0% open
! BBI Slab 200 mm Cast Concrete806 - thickness 0,2
Material,1_2_10003, !- Material name
Rough, !- Roughness
.2, !- Thickness {m}
1.13, !- Conductivity {w/m-K}
2000, !- Density {kg/m3}
1000, !- Specific Heat {J/kg-K}
.9, !- Thermal Emittance
.7, !- Solar Absorptance
.7; !- Visible Absorptance
! XPS Extruded Polystyrene - CO2 Blowing806 - thickness 0,0098
Material,1_1_103, !- Material name
Rough, !- Roughness
.0098, !- Thickness {m}
0.034, !- Conductivity {w/m-K}
35, !- Density {kg/m3}
1400, !- Specific Heat {J/kg-K}
0.9, !- Thermal Emittance
0.6, !- Solar Absorptance
0.6; !- Visible Absorptance
! Aluminium806 - thickness 0,0015 solid 0% open
Material,3_1_45, !- Material name
Rough, !- Roughness
.0015, !- Thickness {m}
160.0000, !- Conductivity {w/m-K}
2800.00, !- Density {kg/m3}
880., !- Specific Heat {J/kg-K}
0.3, !- Thermal Emittance
0.3, !- Solar Absorptance
0.3; !- Visible Absorptance
Branch,
U12 RF Branch, !- Name
autosize, !- Maximum Flow Rate {m3/s}
, !- Pressure Drop Curve Name
ZoneHVAC:LowTemperatureRadiant:VariableFlow, !- Component 1 Object Type
U12 RF, !- Component 1 Name
U12 RF Inlet, !- Component 1 Inlet Node Name
U12 RF Outlet, !- Component 1 Outlet Node Name
Active; !- Component 1 Branch Control Type
Branch,
U12 RF HW Branch, !- Name
autosize, !- Maximum Flow Rate {m3/s}
, !- Pressure Drop Curve Name
ZoneHVAC:LowTemperatureRadiant:VariableFlow, !- Component 1 Object Type
U12 RF, !- Component 1 Name
U12 RF HW Inlet Node, !- Component 1 Inlet Node Name
U12 RF HW Outlet Node, !- Component 1 Outlet Node Name
Active; !- Component 1 Branch Control Type
!!!!!!!!!!!!!!!!!!!RF
!!!!!!!!!!!!!!!Exhaust Fan WC Start
Fan:ZoneExhaust,
U12 XFan WC, !- Name WC Exhaust Fan
HVACTemplate-Always 1, !- Availability Schedule Name
0.7, !- Fan Efficiency
500, !- Pressure Rise {Pa}
7.9836111, !- Mech ventilation (m3/s) 28741 m³/h
U12 WC Exhaust Air Node, !- Air Inlet Node Name
U12 WC Outside Node, !- Air Outlet Node Name
WC Exhaust; !- End-Use Subcategory
!!!!!!!!!!!!!!!Exhaust Fan WC End
ZoneHVAC:AirDistributionUnit,
U12 ATU, !- Name
U12 Supply Inlet, !- Air Distribution Unit Outlet Node Name
AirTerminal:SingleDuct:VAV:NoReheat, !- Air Terminal Object Type
U12 VAV Reheat; !- Component Name 1
AirTerminal:SingleDuct:VAV:NoReheat,
U12 VAV Reheat, !- Name
HVACTemplate-Always 1, !- Availability Schedule Name
U12 Supply Inlet, !- Air Outlet Node Name
U12 Zone Equip Inlet, !- Air Inlet Node Name
autosize, !- Maximum air flow rate {m3/s}
Scheduled, !- Zone Minimum Air Flow Input Method
0.5, !- Constant Minimum Air Flow Fraction
, !- Fixed Minimum Air Flow Rate
U12 MDF; !- Minimum Air Flow Fraction Schedule Name
-----------------------------------------
airloop ODA controller plant side looks like this
-----------------------------------------
!JMM AirLoop - Supply Side!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Sizing:System,
AHU, !- AirLoop Name
Sensible, !- Type of Load to Size On
autosize, !- Design (minimum) outside air volumetric flow rate {m3/s}
1, !- Minimum System Air Flow Ratio
7.2, !- Preheat design temperature {C}
0.0116, !- Preheat design humidity ratio {kg-H2O/kg-air} 0.011785
22, !- Precool design temperature {C}
0.0116, !- Precool design humidity ratio {kg-H2O/kg-air}
22, !- Central cooling design supply air temperature {C}
22, !- Central heating design supply air temperature {C}
NonCoincident, !- Sizing Option
Yes, !- 100% Outdoor Air in Cooling
Yes, !- 100% Outdoor Air in Heating
0.0116, !- Central cooling design supply air humidity ratio {kg-H2O/kg-air}
0.0005, !- Central heating design supply air humidity ratio {kg-H2O/kg-air}
Flow/System, !- Cooling Design Air Flow Method
500, !- cooling design air flow rate {m3/s} ...was 1420210 m³/h is now 1800000
Flow/System, !- Heating Design Air Flow Method
500; !- heating design air flow rate {m3/s}
AirLoopHVAC,
AHU, !- Name
AHU Controllers, !- Controller List Name
AHU Availability Managers, !- Availability Manager List Name
autosize, !- Primary air design volumetric flow rate {m3/s}
AHU Branches, !- BranchList Name
, !- ConnectorList Name
!AHU Connector List, !- ConnectorList Name
EvapCool Air Inlet, !- Supply Side Inlet Node Name
AHU Return Air Outlet, !- Demand Side Outlet Node Name
AHU Supply Path Inlet, !- Demand Side Inlet Node Names
!AHU Reheater Outlet;
DOAS Supply Fan Outlet; !- Supply Side Outlet Node Names
Branch,
DOAS Main Branch, !- Name
autosize, !- Maximum Branch Flow Rate {m3/s}
, !- Pressure Drop Curve Name
EvaporativeCooler:Direct:ResearchSpecial, !- Comp Type
Direct Evap Cooler, !- Comp Name
EvapCool Air Inlet, !- Comp Inlet Node Name
DOAS Air Loop Inlet, !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
AirLoopHVAC:OutdoorAirSystem, !- Comp Type
DOAS OA System, !- Comp Name
!AHU Air Loop Inlet, !- Comp Inlet Node Name
DOAS Air Loop Inlet, !- Comp Inlet Node Name
DOAS Mixed Air Outlet, !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
Coil:Heating:Water, !- Comp Type
DOAS Heating Coil, !- Comp Name
DOAS Mixed Air Outlet, !- Comp Inlet Node Name
DOAS Heating Coil Air Outlet, !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
Coil:Cooling:Water, !- Comp Type
DOAS Cooling Coil, !- Comp Name
DOAS Heating Coil Air Outlet, !- Comp Inlet Node Name
DOAS Cooling Coil Air Outlet, !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
Fan:VariableVolume, !- Comp Type ConstantVolume
DOAS Supply Fan, !- Comp Name
DOAS Cooling Coil Air Outlet, !- Comp Inlet Node Name
DOAS Supply Fan Outlet, !- Comp Outlet Node Name
Active;
AirLoopHVAC:OutdoorAirSystem:EquipmentList,
DOAS OA System Equipment, !- Name
HeatExchanger:AirToAir:SensibleAndLatent, !- Component Object Type
DOAS Heat Recovery, !- Controlled Component Name
OutdoorAir:Mixer, !- Component Object Type
DOAS OA Mixing Box; !- Controlled Component Name
OutdoorAir:Mixer,
DOAS OA Mixing Box, !- Name
DOAS Mixed Air Outlet, !- Mixed Air Node
DOAS Heat Recovery Supply Outlet, !- Outside Air Stream Node
DOAS Relief Air Outlet, !- Relief Air Stream Node
DOAS Air Loop Inlet; !- Return Air Stream Node
Controller:OutdoorAir,
DOAS OA Controller, !- Name
DOAS Relief Air Outlet, !- Relief Air Outlet Node
!AHU Air Loop Inlet, !- Return Air Node Name
DOAS Air Loop Inlet, !- Return Air Node Name
DOAS Mixed Air Outlet, !- Sensor Node Name
DOAS Outside Air Inlet, !- Actuated Node
150, !- minimum outside air flow rate {m3/s} 30%
500, !- maximum outside air flow rate {m3/s}
NoEconomizer, !- Economizer Control Type DifferentialDryBulb
MinimumFlowWithBypass, !- Economizer Control Action Type
25, !- Fixed Dry Bulb Temperature Limit {C}
50000, !- Fixed Enthalpy Limit {J/kg}
, !- Fixed Dew Point Temperature Limit (C)
, !- Electronic Enthalpy Limit Curve Name
11, !- Dry Bulb Temperature Lower Limit {C}
NoLockout, !- Lockout Type
ProportionalMinimum, !- Minimum Limit Type
,!ODA_rate_Sch, !- Minimum Outdoor Air Schedule Name
Min_ODA_Fraction_Sch, !- Minimum Fraction of Outdoor Air Schedule Name **Note: This field overrides Minimum Outdoor Air Schedule and Minimum Outdoor Air Flowrate
Min_ODA_Fraction_Sch, !- Maximum Fraction of Outdoor Air Schedule Name
;!CO2DemandController; !- Mechanical Ventilation Controller Name
! Modified schedule: On
Schedule:Compact,
Min_ODA_Fraction_Sch,
Any Number,
Through: 12/31,
For: AllDays,
Until: 24:00, 1;
------------------------------------
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