def
choice
Choice specifies an exclusive marker selection. See Choices chapter.
meta
supertypes
marker |
Marker labels a dict with typing information |
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subtypes
ahuZoneDelivery |
AHU delivery method of conditioned air to the zone |
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chilledBeamZone |
AHU supplies air to chilled beam terminal units |
directZone |
AHU supplies air directly to the zone |
multiZone |
AHU discharge air is split into a duct per zone |
vavZone |
AHU supplies air to VAV terminal units |
airVolumeAdjustability |
Ability of air handling equip to adjust volume of air flow |
constantAirVolume |
Delivers a constant volume of air flow |
variableAirVolume |
Delivers a variable volume of air flow |
atesDesign |
Design type of the ATES underground system |
atesClosedLoop |
The ATES uses closed piping to transport a water/glycol mixture through the ground |
atesDoublet |
The ATES has one or more pairs of a separate warm and cool well |
atesDoubletPaired |
The ATES is as a doublet, but with specific warm and cool wells linked together |
atesMono |
The ATES has only one physical well |
atesUnidirectional |
Similar to a doublet, but water always flows in the same direction from the extraction to the infiltration well |
chillerMechanism |
Primary mechanism of chiller |
chiller-absorption |
Cooling process using energy from heat source such as hot water |
chiller-centrifugal |
Compression via a continuous flow of fluid through an impeller |
chiller-reciprocal |
Piston compressor driven by a crankshaft |
chiller-rotaryScrew |
Rotary screw compression |
condenserLoop |
Open or closed loop for condenser working fluid |
condenserClosedLoop |
Working fluid is kept separate from fluid used for heat transfer into the atmosphere |
condenserOpenLoop |
Uses working fluid itself for evaporation into the atmosphere |
coolingProcess |
Processed used to cool a substance |
airCooling |
Cooling by dissipating heat into the surrounding air |
chilledWaterCooling |
Cooling using transfer of heat to chilled water |
condenserCooling |
Removal of heat through the process of water condensation |
dxCooling |
Cooling using direct expansion of a refrigerant vapor |
waterCooling |
Cooling using transfer of heat to water which is not explicitly chilled |
ductConfig |
Ductwork configuration |
dualDuct |
Two ducts |
singleDuct |
One single duct |
tripleDuct |
Three ducts |
ductDeck |
Cold, hot, or neutral deck |
coldDeck |
Duct carries air for cooling |
hotDeck |
Duct carries air for heating |
neutralDeck |
Duct carries air which by-passes both heating and cooling coils |
ductSection |
Equipment section of ductwork |
discharge |
Duct for air leaving an equipment |
economizer |
Duct to access fresh outside air only for economizing, not ventilation |
exhaust |
Duct used to expel air back outside |
flue |
Duct for exhausting combustion |
inlet |
Duct with air entering an equipment |
mixed |
Duct where fresh outside air and return air is mixed together |
outside |
Duct to access fresh outside air for both ventilation and economizer |
return |
Duct returning air back to equipment |
ventilation |
Duct to access fresh outside air only for ventilation, not economizing |
heatingProcess |
Processed used to heat a substance |
biomassHeating |
Heating by the combustion of biomass |
coalHeating |
Heating by the combustion of coal |
dxHeating |
Heating using direct expansion of a refrigerant vapor |
elecHeating |
Heating by the conversion of electrical energy |
fuelOilHeating |
Heating by the combustion of fuel oil |
hotWaterHeating |
Heating using energy of hot water |
naturalGasHeating |
Heating by the combustion of natural gas |
propaneHeating |
Heating by the combustion of propane |
steamHeating |
Heating using energy of steam |
meterScope |
Classifies a meter as a main site meter or submeter |
siteMeter |
Main meter for the associated site |
submeter |
Submeters measure usage of a sub-system or equipment within a site |
pfScope |
Power factor scope |
pfDisplacement |
Displacement power factor, which excludes effects of harmonic distortion |
pfDistortion |
Distortion power factor |
pfTrue |
True power factor, which includes effects of harmonic distortion |
phaseCount |
Number of phases for an AC electrical power system or connected equipment |
singlePhase |
Single-phase AC electrical power |
threePhase |
Three-phase AC electrical power |
pipeFluid |
Type of fluid conveyed by piping |
pipeSection |
Equipment section of piping |
bypass |
Pipe used to bypass an equipment |
circ |
Pipe used to circulate fluid through an equipment or system |
entering |
Pipe conveys fluid into an equipment |
header |
Pipe used as central connection or manifold for other piping runs |
leaving |
Pipe conveys fluid out of an equipment |
plantLoop |
Plant piping loop |
primaryLoop |
Pipework which circulates closest to the energy source |
secondaryLoop |
Pipework which circulates closest to the building or end use |
tertiaryLoop |
Pipework which circulates within the building |
pointFunction |
Classifies the point as a sensor, command, or setpoint |
cmd |
Point is a command, actuator, AO/BO |
sensor |
Point is a sensor, input, AI/BI |
sp |
Point is a setpoint, soft point, internal control variable, schedule |
synthetic |
Synthetic point with computed operational data |
computed |
Computed point |
ml |
Machine learning point |
sim |
Simulation point |
pointQuantity |
Quantity the point senses or controls |
pointSubject |
What the point senses or controls |
simScenario |
See Synthetics chapter |
simBaseline |
See Synthetics chapter |
simOperation |
See Synthetics chapter |
simOptimum |
See Synthetics chapter |
tankSubstance |
Substance stored by a tank |
vavAirCircuit |
How does the VAV pull in air |
vav-parallel |
VAV pulls air from outside the primary air flow |
vav-series |
VAV pulls air from the primary air flow |
vavModulation |
How does VAV modulate the temp based on duct pressure |
pressureDependent |
VAV damper modulates to control space temp |
pressureIndependent |
VAV damper or a control valve that modulates to maintain desired flow setpoint |