Auxiliary Programs — EnergyPlus 24.1

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Introduction[LINK]

The HVAC-Diagram program is a simple utility that can be used to generate a svg file based on the bnd file generated by EnergyPlus. It is a stored in the primary EnergyPlus\PostProcessor folder upon installation.

It creates a series of diagrams for the layout of the HVAC system components. The SVG file can be viewed with a number of internet browser plug-ins such as produced by Adobe that can be downloaded at www.adobe.com/svg. To get help within the Adobe viewer, right click anywhere on the drawing.

Each diagram should be read from left to right, which is the direction of the flow of the fluid through the components.

The HVAC-Diagram program is automatically called when using EP-Launch but can also be included in other batch files. To view the drawing in EP-Launch, click on the drawing button. You can zoom in on this drawing and with the “copy” command, paste a zoomed in portion as a bitmap in your document.

HVAC Diagram – SVG Drawing [fig:hvac-diagram-svg-drawing]

HVAC Diagram – SVG Drawing [fig:hvac-diagram-svg-drawing]

Objects that are recognized by the HVAC diagram are shown in Table 1 (sorted by Object Name) and Table 2 (sorted by color).

HVAC Diagram Object Names (primary sort) Colors
Object Name Color
AirLoopHVAC:ReturnPlenum lightgreen
AirLoopHVAC:SupplyPlenum lightgreen
AirLoopHVAC:ZoneMixer wheat
AirLoopHVAC:ZoneSplitter wheat
AirTerminal:DualDuct:ConstantVolume wheat
AirTerminal:DualDuct:VAV wheat
AirTerminal:SingleDuct:VAV:NoReheat wheat
AirTerminal:SingleDuct:VAV:Reheat wheat
Boiler:HotWater indianred
Chiller:Absorption powderblue
Chiller:CombustionTurbine powderblue
Chiller:ConstantCOP powderblue
Chiller:Electric powderblue
Chiller:EngineDriven powderblue
ChillerHeater:Absorption:DirectFired powderblue
Coil:Cooling:DX:MultiSpeed skyblue
Coil:Cooling:DX:SingleSpeed skyblue
Coil:Cooling:Water skyblue
Coil:Cooling:Water:DetailedGeometry skyblue
Coil:Cooling:WaterToAirHeatPump:EquationFit skyblue
Coil:Cooling:WaterToAirHeatPump:ParameterEstimation skyblue
Coil:Heating:DX:SingleSpeed skyblue
Coil:Heating:Electric salmon
Coil:Heating:Fuel salmon
Coil:Heating:Water salmon
Coil:Heating:WaterToAirHeatPump:EquationFit salmon
Coil:Heating:WaterToAirHeatPump:ParameterEstimation salmon
Connector:Mixer lightgreen
Connector:Splitter wheat
Controller:OutdoorAir none
Controller:WaterCoil none
CoolingTower:SingleSpeed pink
Dehumidifier:Desiccant:NoFans tan
DistrictCooling none
DistrictHeating none
EvaporativeCooler:Direct:CelDekPad aliceblue
EvaporativeCooler:Indirect:CelDekPad aliceblue
EvaporativeCooler:Indirect:ResearchSpecial aliceblue
Fan:ConstantVolume silver
Fan:OnOff silver
Fan:VariableVolume silver
Fan:ZoneExhaust silver
Generator:CombustionTurbine orange
Generator:InternalCombustionEngine orange
GroundHeatExchanger:Pond paleturquoise
GroundHeatExchanger:Surface paleturquoise
GroundHeatExchanger:System paleturquoise
GroundHeatExchanger:Slinky paleturquoise
HeatExchanger:AirToAir:FlatPlate paleturquoise
HeatExchanger:AirToAir:SensibleAndLatent paleturquoise
HeatExchanger:Hydronic paleturquoise
HeatPump:WaterToWater:EquationFit:Cooling lightslategray
HeatPump:WaterToWater:EquationFit:Heating lightslategray
HeatPump:WaterToWater:ParameterEstimation:Cooling lightslategray
HeatPump:WaterToWater:ParameterEstimation:Heating lightslategray
Humidifier:Steam:Electric lavender
LoadProfile:Plant none
OutdoorAir:Mixer lawngreen
OutdoorAir:NodeList none
Pipe:Adiabatic wheat
PlantLoopConnection wheat
Pump:ConstantSpeed springgreen
Pump:VariableSpeed springgreen
SolarCollector:FlatPlate:Water yellow
WaterHeater:Mixed orange
WaterHeater:Stratified orange
ZoneHVAC:Baseboard:Convective:Water salmon
ZoneHVAC:EnergyRecoveryVentilator:Controller none
ZoneHVAC:EquipmentConnections chartreuse
ZoneHVAC:IdealLoadsAirSystem none
ZoneHVAC:LowTemperatureRadiant:ConstantFlow orangered
ZoneHVAC:LowTemperatureRadiant:VariableFlow orangered
ZoneHVAC:UnitVentilator sandybrown
HVAC Diagram Object Names and Color (primary sort)
Object Name Color
EvaporativeCooler:Direct:CelDekPad aliceblue
EvaporativeCooler:Indirect:CelDekPad aliceblue
EvaporativeCooler:Indirect:ResearchSpecial aliceblue
ZoneHVAC:EquipmentConnections chartreuse
Boiler:HotWater indianred
Humidifier:Steam:Electric lavender
OutdoorAir:Mixer lawngreen
AirLoopHVAC:ReturnPlenum lightgreen
AirLoopHVAC:SupplyPlenum lightgreen
Connector:Mixer lightgreen
HeatPump:WaterToWater:EquationFit:Cooling lightslategray
HeatPump:WaterToWater:EquationFit:Heating lightslategray
HeatPump:WaterToWater:ParameterEstimation:Cooling lightslategray
HeatPump:WaterToWater:ParameterEstimation:Heating lightslategray
Controller:OutdoorAir none
Controller:WaterCoil none
DistrictCooling none
DistrictHeating none
LoadProfile:Plant none
OutdoorAir:NodeList none
ZoneHVAC:EnergyRecoveryVentilator:Controller none
ZoneHVAC:IdealLoadsAirSystem none
Generator:CombustionTurbine orange
Generator:InternalCombustionEngine orange
WaterHeater:Mixed orange
WaterHeater:Stratified orange
ZoneHVAC:LowTemperatureRadiant:ConstantFlow orangered
ZoneHVAC:LowTemperatureRadiant:VariableFlow orangered
GroundHeatExchanger:Pond paleturquoise
GroundHeatExchanger:Surface paleturquoise
GroundHeatExchanger:Vertical paleturquoise
HeatExchanger:AirToAir:FlatPlate paleturquoise
HeatExchanger:AirToAir:SensibleAndLatent paleturquoise
HeatExchanger:Hydronic paleturquoise
CoolingTower:SingleSpeed pink
Chiller:Absorption powderblue
Chiller:CombustionTurbine powderblue
Chiller:ConstantCOP powderblue
Chiller:Electric powderblue
Chiller:EngineDriven powderblue
ChillerHeater:Absorption:DirectFired powderblue
Coil:Heating:Electric salmon
Coil:Heating:Fuel salmon
Coil:Heating:Water salmon
Coil:Heating:WaterToAirHeatPump:EquationFit salmon
Coil:Heating:WaterToAirHeatPump:ParameterEstimation salmon
ZoneHVAC:Baseboard:Convective:Water salmon
ZoneHVAC:UnitVentilator sandybrown
Fan:ConstantVolume silver
Fan:OnOff silver
Fan:VariableVolume silver
Fan:ZoneExhaust silver
Coil:Cooling:DX:MultiSpeed skyblue
Coil:Cooling:DX:SingleSpeed skyblue
Coil:Cooling:Water skyblue
Coil:Cooling:Water:DetailedGeometry skyblue
Coil:Cooling:WaterToAirHeatPump:EquationFit skyblue
Coil:Cooling:WaterToAirHeatPump:ParameterEstimation skyblue
Coil:Heating:DX:SingleSpeed skyblue
Pump:ConstantSpeed springgreen
Pump:VariableSpeed springgreen
Dehumidifier:Desiccant:NoFans tan
AirLoopHVAC:ZoneMixer wheat
AirLoopHVAC:ZoneSplitter wheat
AirTerminal:DualDuct:ConstantVolume wheat
AirTerminal:DualDuct:VAV wheat
AirTerminal:SingleDuct:VAV:NoReheat wheat
AirTerminal:SingleDuct:VAV:Reheat wheat
Connector:Splitter wheat
Pipe:Adiabatic wheat
PlantLoopConnection wheat
SolarCollector:FlatPlate:Water yellow