def
choice
Choice specifies an exclusive marker selection. See Choices chapter.
meta
supertypes
| marker |
Marker labels a dict with typing information |
|---|
subtypes
| ahuZoneDelivery |
AHU delivery method of conditioned air to the zone |
|---|---|
| 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 |
| observes |
Observable subscription - see docs |
| 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 |
| pointQuantity |
Quantity the point senses or controls |
| pointSubject |
What the point senses or controls |
| 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 |