Lecture 17: VAV and Terminal Reheat Systems
Material prepared by GARD Analytics, Inc. and University of Illinoisat Urbana-Champaign under contract to the National Renewable Energy
Laboratory. All material Copyright 2002-2003 U.S.D.O.E. - All rights reserved
2
Purpose of this Lecture
Gain an understanding of how to: Define Air Loops and Zone Equipment
input for various types of fan systems VAV Terminal Reheat
Review various keywords already covered and show how they interact to form a complete system definition
VAV Systems in EnergyPlus
4
VAV with Reheat and Outside Air Example
Air Loop contains the Mixed Air System, Supply Fan and the Cooling Coil
Outside air system will be discussed later in more detail
Zone Equipment Loop contains the Splitter, VAV Box Air Distribution Unit, the zones, and the Return Air Path with the Mixer.
North
Zone
East
Zone
Resistive
Zone
Supply Fan
Re
turn
Air
Mix
er
Zo
ne
Air
Sp
litter
CC
VAV Box:ReHeat
VAV Box:ReHeat
Mixed OutsideAir Box
Relief Air
Outside Air
VAV Box:ReHeat
North
Zone
East
Zone
Resistive
Zone
Supply Fan
Re
turn
Air
Mix
er
Zo
ne
Air
Sp
litter
CC
VAV Box:ReHeat
VAV Box:ReHeat
Mixed OutsideAir Box
Relief Air
Outside Air
VAV Box:ReHeat
Chilled Water Return
Chilled Water SupplyReturn Air
5
VAV with Reheat Air Loop
Air Primary Loop, Typical Terminal Reheat 1, !- Primary Air Loop Name Reheat System 1 Controllers, !- Name: Controller List Reheat System 1 Avail List, !- Name: System Availability Manager List 1.3, !- Primary air design volumetric flow rate {m3/s} Air Loop Branches, !- Air Loop Branch List Name , !- Air Loop Connector List Name Air Loop Inlet Node, !- ReturnAir AirLoop Inlet Node Return Air Mixer Outlet Node, !- ZoneEquipGroup Outlet Node Zone Equipment Inlet Node, !- SupplyAirPath ZoneEquipGroup Inlet Nodes Air Loop Outlet Node; !- AirLoop Outlet Nodes
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
6
VAV with Reheat Controller and Branch
Lists
CONTROLLER LIST,
Reheat System 1 Controllers, !- Name
Controller:Simple, !- Controller Type 1
Main Cooling Coil Controller; !- Controller Name 1
BRANCH LIST,
Air Loop Branches, !- Branch List Name
Air Loop Main Branch; !- Branch Name 1
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
7
VAV with Reheat Main Branch
BRANCH, Air Loop Main Branch, !- Branch Name 1.3, !- Maximum Branch Flow Rate {m3/s} OUTSIDE AIR SYSTEM, !- Comp1 Type OA Sys 1, !- Comp1 Name Air Loop Inlet Node, !- Comp1 Inlet Node Name Mixed Air Node, !- Comp1 Outlet Node Name PASSIVE, !- Comp1 Branch Control Type FAN:SIMPLE:VariableVolume, !- Comp2 Type Var Vol Supply Fan 1, !- Comp2 Name Mixed Air Node, !- Comp2 Inlet Node Name Cooling Coil Air Inlet Node, !- Comp2 Outlet Node Name ACTIVE, !- Comp2 Branch Control Type < cont’d on next slide>
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
8
VAV with Reheat Main Branch (cont’d)
COIL:Water:DetailedFlatCooling, !- Comp3 Type Detailed Cooling Coil, !- Comp3 Name Cooling Coil Air Inlet Node, !- Comp3 Inlet Node Name Air Loop Outlet Node, !- Comp3 Outlet Node Name PASSIVE; !- Comp3 Branch Control Type
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
9
VAV with Reheat System Availability
Manager
SYSTEM AVAILABILITY MANAGER LIST,
Reheat System 1 Avail List, !- Name
SYSTEM AVAILABILITY MANAGER:SCHEDULED, !- System Availability Manager type 1
Reheat System 1 Avail; !- System Availability Manager name 1
SYSTEM AVAILABILITY MANAGER:SCHEDULED,
Reheat System 1 Avail, !- Name
FanAndCoilAvailSched; !- Schedule name
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
10
VAV with Reheat Supply Fan
FAN:SIMPLE:VariableVolume, Var Vol Supply Fan 1, !- Fan Name CoolingCoilAvailSched, !- Available Schedule 0.7, !- Fan Total Efficiency 600.0, !- Delta Pressure {Pa} 1.3, !- Max Flow Rate {m3/s} 0.20, !- Min Flow Rate {m3/s} 0.9, !- Motor Efficiency 1.0, !- Motor In Airstream Fraction 0.35071223, !- FanCoefficient 1 0.30850535, !- FanCoefficient 2 -0.54137364, !- FanCoefficient 3 0.87198823, !- FanCoefficient 4 0.000, !- FanCoefficient 5 Air Loop Inlet Node, !- Fan_Inlet_Node Cooling Coil Air Inlet Node; !- Fan_Outlet_Node
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
11
VAV with Reheat Cooling Coil
COIL:Water:SimpleCooling,
Main Cooling Coil 1, !- Coil Name
CoolingCoilAvailSched, !- Available Schedule
autosize, !- UA of the Coil {W/K}
autosize, !- Max Water Flow Rate of Coil {m3/s}
0.9, !- Leaving Relative Humidity of Coil
Main Cooling Coil 1 Water Inlet Node, !- Coil_Water_Inlet_Node
Main Cooling Coil 1 Water Outlet Node, !- Coil_Water_Outlet_Node
Mixed Air Node 1, !- Coil_Air_Inlet_Node
Main Cooling Coil 1 Outlet Node; !- Coil_Air_Outlet_Node
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
12
VAV with Reheat Cooling Coil Controller
Controller:Simple, Main Cooling Coil Controller, !- Name TEMP, !- Control variable Reverse, !- Action FLOW, !- Actuator variable Air Loop Outlet Node, !- Control_Node Cooling Coil Water Inlet Node, !- Actuator_Node 0.001, !- Controller Convergence Tolerance: delta temp from setpoint {C} 0.0011, !- Max Actuated Flow {m3/s} 0.0; !- Min Actuated Flow {m3/s}
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Chilled Water Return
Chilled Water SupplyReturn Air
13
VAV with Reheat Zone Supply Air Path
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE SUPPLY AIR PATH,
TermReheatSupplyPath, !- Supply Air Path Name
Zone Equipment Inlet Node, !- Supply Air Path Inlet Node
Zone Splitter, !- KEY--System Component Type
Zone Supply Air Splitter; !- Component Name
14
VAV with Reheat Zone Splitter
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE SPLITTER,
Zone Supply Air Splitter, !- Splitter Name
Zone Equipment Inlet Node, !- Inlet_Node
Zone 1 Inlet Node, !- Outlet_Node_1
Zone 2 Inlet Node, !- Outlet_Node_2
Zone 3 Inlet Node; !- Outlet_Node_3
15
VAV with Reheat Zone Return Air Path
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE RETURN AIR PATH,
TermReheatReturnPath, !- Return Air Path Name
Return Air Mixer Outlet, !- Return Air Path Outlet Node
Zone Mixer, !- KEY--System Component Type 1
Zone Return Air Mixer; !- Component Name 1
16
VAV with Reheat Zone Mixer
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE MIXER,
Zone Return Air Mixer, !- Mixer Name
Return Air Mixer Outlet, !- Outlet_Node
Zone 1 Outlet Node, !- Inlet_Node_1
Zone 2 Outlet Node, !- Inlet_Node_2
Zone 3 Outlet Node; !- Inlet_Node_3
17
VAV with Reheat Zone Equip Configuration
CONTROLLED ZONE EQUIP CONFIGURATION,
RESISTIVE ZONE, !- Zone Name
Zone1Equipment, !- List Name: Zone Equipment
Zone1Inlets, !- List Name: Zone Inlet Nodes
, !- List Name: Zone Exhaust Nodes
Zone 1 Node, !- Zone Air Node Name
Zone 1 Outlet Node; !- Zone Return Air Node Name
Resistive
Zone
VAV Box: Reheat
Resistive
Zone
VAV Box:
18
VAV with Reheat Zone Equipment List
ZONE EQUIPMENT LIST,
Zone1Equipment, !- Name
AIR DISTRIBUTION UNIT, !- KEY--Zone Equipment Type 1
Zone1TermReheat, !- Type Name 1
1, !- Cooling Priority
1; !- Heating Priority
Resistive
Zone
VAV Box: Reheat
Resistive
Zone
VAV Box:
19
VAV with Reheat Air Distribution Unit
AIR DISTRIBUTION UNIT,
Zone1TermReheat, !- Air Distribution Unit Name
Zone 1 Reheat Air Outlet Node, !- Air Dist Unit Outlet Node Name
SINGLE DUCT:VAV:REHEAT, !- KEY--System Component Type 1
Zone 1 VAV System; !- Component Name 1
NODE LIST,
Zone1Inlets, !- Node List Name
Zone 1 Reheat Air Outlet Node; !- Node_ID_1
Resistive
Zone
VAV Box: Reheat
Resistive
Zone
VAV Box:
20
VAV with Reheat VAV Terminal Unit
SINGLE DUCT:VAV:REHEAT, SPACE1-1 VAV Reheat, !- Name of System ReheatCoilAvailSched, !- Availability schedule for VAV System SPACE1-1 Zone Coil Air In Node, !- Damper Outlet Node SPACE1-1 ATU In Node, !- Damper Inlet Node 0.33, !- Maximum air flow rate {m3/s} 0.3, !- Min air flow fraction SPACE1-1 Zone Coil Water In Node, !- Control node COIL:Water:SimpleHeating, !- Reheat Component Object SPACE1-1 Zone Coil, !- Name of Reheat Component 0.0003, !- Max Reheat Water Flow {m3/s} 0.0, !- Min Reheat Water Flow {m3/s} SPACE1-1 In Node, !- Reheat Air Outlet Node 0.001, !- Convergence Tolerance REVERSE ACTION; !- Damper Heating Action
21
VAV with Reheat Reheat Coil
COIL:Water:SimpleHeating, SPACE1-1 Zone Coil, !- Coil Name ReheatCoilAvailSched, !- Available Schedule 300., !- UA of the Coil {W/K} 0.0003, !- Max Water Flow Rate of Coil {m3/s} SPACE1-1 Zone Coil Water In Node, !- Coil_Water_Inlet_Node SPACE1-1 Zone Coil Water Out Node, !- Coil_Water_Outlet_Node SPACE1-1 Zone Coil Air In Node, !- Coil_Air_Inlet_Node SPACE1-1 In Node; !- Coil_Air_Outlet_Node
Resistive
Zone
VAV Box: Reheat
Resistive
Zone
VAV Box:
Terminal Reheat Systems in EnergyPlus
23
TermReheat Controller and Branch
ListsSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
CONTROLLER LIST,
Reheat System 1 Controllers, !- Name
Controller:Simple, !- Controller Type 1
Main Cooling Coil Controller; !- Controller Name 1
BRANCH LIST,
Air Loop Branches, !- Branch List Name
Air Loop Main Branch; !- Branch Name 1
24
TermReheat Main Branch
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
BRANCH, Air Loop Main Branch, !- Branch Name 1.3, !- Maximum Branch Flow Rate {m3/s} FAN:SIMPLE:VariableVolume, !- Comp1 Type Var Vol Supply Fan 1, !- Comp1 Name Air Loop Inlet Node, !- Comp1 Inlet Node Name Cooling Coil Air Inlet Node, !- Comp1 Outlet Node Name ACTIVE, !- Comp1 Branch Control Type COIL:Water:DetailedFlatCooling, !- Comp2 Type Detailed Cooling Coil, !- Comp2 Name Cooling Coil Air Inlet Node, !- Comp2 Inlet Node Name Air Loop Outlet Node, !- Comp2 Outlet Node Name PASSIVE; !- Comp2 Branch Control Type
25
TermReheat System Availability
ManagerSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
SYSTEM AVAILABILITY MANAGER LIST,
Reheat System 1 Avail List, !- Name
SYSTEM AVAILABILITY MANAGER:SCHEDULED, !- System Availability Manager type 1
Reheat System 1 Avail; !- System Availability Manager name 1
SYSTEM AVAILABILITY MANAGER:SCHEDULED,
Reheat System 1 Avail, !- Name
FanAndCoilAvailSched; !- Schedule name
26
TermReheat Supply Fan
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
FAN:SIMPLE:ConstVolume,
Supply Fan 1, !- Fan Name
FanAndCoilAvailSched, !- Available Schedule
0.7, !- Fan Total Efficiency
600.0, !- Delta Pressure {Pa}
1.3, !- Max Flow Rate {m3/s}
0.9, !- Motor Efficiency
1.0, !- Motor In Airstream Fraction
Air Loop Inlet Node, !- Fan_Inlet_Node
Cooling Coil Air Inlet Node; !- Fan_Outlet_Node
27
TermReheat Cooling Coil
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
COIL:Water:SimpleCooling,
Main Cooling Coil 1, !- Coil Name
CoolingCoilAvailSched, !- Available Schedule
autosize, !- UA of the Coil {W/K}
autosize, !- Max Water Flow Rate of Coil {m3/s}
0.9, !- Leaving Relative Humidity of Coil
Main Cooling Coil 1 Water Inlet Node, !- Coil_Water_Inlet_Node
Main Cooling Coil 1 Water Outlet Node, !- Coil_Water_Outlet_Node
Mixed Air Node 1, !- Coil_Air_Inlet_Node
Main Cooling Coil 1 Outlet Node; !- Coil_Air_Outlet_Node
28
TermReheat Cooling Coil Controller
Supply Fan
CCMixed OutsideAir Box
Relief Air
Outside AirSupply Fan
CCMixed OutsideAir Box
Relief Air
Outside Air
Controller:Simple, Main Cooling Coil Controller, !- Name TEMP, !- Control variable Reverse, !- Action FLOW, !- Actuator variable Air Loop Outlet Node, !- Control_Node Cooling Coil Water Inlet Node, !- Actuator_Node 0.001, !- Controller Convergence Tolerance: delta temp from setpoint {C} 0.0011, !- Max Actuated Flow {m3/s} 0.0; !- Min Actuated Flow {m3/s}
29
TermReheat Zone Thermostat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zone A
ir Splitte
rVAV Box:ReHeat
VAV Box:ReHeat
VAV Box:ReHeat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zone A
ir Splitte
rVAV Box:ReHeat
VAV Box:ReHeat
VAV Box:ReHeat
ZONE CONTROL:THERMOSTATIC, Zone 1 Thermostat, !- Thermostat Name RESISTIVE ZONE, !- Zone Name Zone Control Type Sched, !- Control Type SCHEDULE Name SINGLE HEATING SETPOINT, !- Control Type #1 Heating Setpoint with SB, !- Control Type Name #1 SINGLE COOLING SETPOINT, !- Control Type #2 Cooling Setpoint with SB; !- Control Type Name #2
30
TermReheat Thermostat Setpoints
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zone A
ir Splitte
r
VAV Box:ReHeat
VAV Box:ReHeat
VAV Box:ReHeat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zone A
ir Splitte
r
VAV Box:ReHeat
VAV Box:ReHeat
VAV Box:ReHeat
SINGLE HEATING SETPOINT, Heating Setpoint with SB, !- Name Heating Setpoints; !- Setpoint Temperature SCHEDULE Name
SINGLE COOLING SETPOINT, Cooling Setpoint with SB, !- Name Cooling Setpoints; !- Setpoint Temperature SCHEDULE Name
31
TermReheat Zone Supply Air Path
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE SUPPLY AIR PATH,
TermReheatSupplyPath, !- Supply Air Path Name
Zone Equipment Inlet Node, !- Supply Air Path Inlet Node
Zone Splitter, !- KEY--System Component Type
Zone Supply Air Splitter; !- Component Name
32
TermReheat Zone Return Air Path
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Re
turn
Air
Mix
er
Zo
ne A
ir Sp
litter
VAV Box:ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE RETURN AIR PATH,
TermReheatReturnPath, !- Return Air Path Name
Return Air Mixer Outlet, !- Return Air Path Outlet Node
Zone Mixer, !- KEY--System Component Type 1
Zone Return Air Mixer; !- Component Name 1
33
TermReheat Zone Splitter
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE SPLITTER,
Zone Supply Air Splitter, !- Splitter Name
Zone Equipment Inlet Node, !- Inlet_Node
Zone 1 Inlet Node, !- Outlet_Node_1
Zone 2 Inlet Node, !- Outlet_Node_2
Zone 3 Inlet Node; !- Outlet_Node_3
34
TermReheat Zone Mixer
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
North
Zone
East
Zone
Resistive
Zone
Retu
rn A
ir M
ixe
r
Zo
ne A
ir Sp
litter
VAV Box: ReHeat
VAV Box: ReHeat
VAV Box: ReHeat
ZONE MIXER,
Zone Return Air Mixer, !- Mixer Name
Return Air Mixer Outlet, !- Outlet_Node
Zone 1 Outlet Node, !- Inlet_Node_1
Zone 2 Outlet Node, !- Inlet_Node_2
Zone 3 Outlet Node; !- Inlet_Node_3
35
TermReheat Zone Equip Configuration
Resistive
Zone
VAV Box: ReHeat
Resistive
Zone
VAV Box: ReHeat
CONTROLLED ZONE EQUIP CONFIGURATION,
RESISTIVE ZONE, !- Zone Name
Zone1Equipment, !- List Name: Zone Equipment
Zone1Inlets, !- List Name: Zone Inlet Nodes
, !- List Name: Zone Exhaust Nodes
Zone 1 Node, !- Zone Air Node Name
Zone 1 Outlet Node; !- Zone Return Air Node Name
36
TermReheat Zone Equipment List
Resistive
Zone
VAV Box: ReHeat
Resistive
Zone
VAV Box: ReHeat
ZONE EQUIPMENT LIST,
Zone1Equipment, !- Name
AIR DISTRIBUTION UNIT, !- KEY--Zone Equipment Type 1
Zone1TermReheat, !- Type Name 1
1, !- Cooling Priority
1; !- Heating Priority
37
TermReheat Air Distribution Unit
Resistive
Zone
VAV Box: ReHeat
Resistive
Zone
VAV Box: ReHeat
AIR DISTRIBUTION UNIT,
Zone1TermReheat, !- Air Distribution Unit Name
Zone 1 Reheat Air Outlet Node, !- Air Dist Unit Outlet Node Name
SINGLE DUCT:VAV:REHEAT, !- KEY--System Component Type 1
Zone 1 VAV System; !- Component Name 1
NODE LIST,
Zone1Inlets, !- Node List Name
Zone 1 Reheat Air Outlet Node; !- Node_ID_1
38
TermReheat VAV Terminal Unit
SINGLE DUCT:VAV:REHEAT, SPACE1-1 VAV Reheat, !- Name of System ReheatCoilAvailSched, !- Availability schedule for VAV System SPACE1-1 Zone Coil Air In Node, !- Damper Outlet Node SPACE1-1 ATU In Node, !- Damper Inlet Node 0.33, !- Maximum air flow rate {m3/s} 0.3, !- Min air flow fraction SPACE1-1 Zone Coil Water In Node, !- Control node COIL:Water:SimpleHeating, !- Reheat Component Object SPACE1-1 Zone Coil, !- Name of Reheat Component 0.0003, !- Max Reheat Water Flow {m3/s} 0.0, !- Min Reheat Water Flow {m3/s} SPACE1-1 In Node, !- Reheat Air Outlet Node 0.001, !- Convergence Tolerance REVERSE ACTION; !- Damper Heating Action
39
TermReheat Reheat Coil
Resistive
Zone
VAV Box: ReHeat
Resistive
Zone
VAV Box: ReHeat
COIL:Water:SimpleHeating, SPACE1-1 Zone Coil, !- Coil Name ReheatCoilAvailSched, !- Available Schedule 300., !- UA of the Coil {W/K} 0.0003, !- Max Water Flow Rate of Coil {m3/s} SPACE1-1 Zone Coil Water In Node, !- Coil_Water_Inlet_Node SPACE1-1 Zone Coil Water Out Node, !- Coil_Water_Outlet_Node SPACE1-1 Zone Coil Air In Node, !- Coil_Air_Inlet_Node SPACE1-1 In Node; !- Coil_Air_Outlet_Node
40
Summary
This lecture highlighted the EnergyPlus input necessary to define most VAV and Terminal Reheat systems Air loop and zone equipment input Thermostat input Fan and coil component input Controller input