Variable name

Cooling process using energy from heat source such as hot water

Relating to alternating current electricity

Alternating current electricity

Frequency of alternating current

Working, operative, effective

Active power or real power

Air handling unit

Cooling using transfer of heat to chilled water

Cooling using refrigerant vapar expansion and compression

Heating by the conversion of electrical energy

Heating by the combustion of natural gas

Heating using energy of hot water

Heating using energy of steam

Method used to cool air for conditioning spaces

Method used to heat air for conditioning spaces

AHU which supplies air to an equipment or space

AHU delivery method of conditioned air to the zone

The mixture of gases which surrounds the earth

Dry bulb temperature

Cooling by dissipating heat into the surrounding air

Measurement of contaminants in the air

Measurement of the relative difference in direction between two vectors or phasors

Perceived quantity

Apparent power is perceived magnitude of power due to the combination of active and reactive power

Area of a shape or floor space

Related to the atmosphere of the earth

Barometric pressure exerted by the weight of the atmosphere

Variable name

Relating atmospheric pressure

Base URI for normalizing relative URIs

Device used to store electric energy

Removal from container or pipe

Water expelled from a system to remove mineral build up

Boilers generate hot water or steam for heating

Heating by the combustion of natural gas

Heating by the combustion of fuel oil

Method used to heat water in a boiler

Boolean value true or false

Site which is a building

Pipe used to bypass an equipment

Variable name

Compression via a continuous flow of fluid through an impeller

Cooled

Water used for HVAC cooling

Plant used to generate chilled water for cooling

AHU supplies air to chilled beam terminal units

Cooling using transfer of heat to chilled water

Plant which supplies chilled water to the entity

Device to remove heat via a vapor compression or an absorption refrigeration cycle

Cooling process using energy from heat source such as hot water

Cooling by dissipating heat into the surrounding air

Compression via a continuous flow of fluid through an impeller

Removal of heat through the process of water condensation

Piston compressor driven by a crankshaft

Rotary screw compression

Processed used to remove heat from refrigerant

Primary mechanism of chiller

Working fluid is kept separate from fluid used for heat transfer into the atmosphere

Percentage of sky obscurred by clouds

Point is a command, actuator, AO/BO

Carbon dioxide level

Duct carries air for cooling

Device or related to process of condensation

Water used used to remove heat through condensation

Removal of heat through the process of water condensation

Duct, pipe, or cable to convey a substance or phenomenon

The entity contains the referent

The entity is contained by the referent

What type of substance or phenomenon conveyed by a conduit

Associated with a cooling process

Processed used to cool a substance

Measurement of a chiller ability to remove heat measured

Open or closed loop

Device without heating

Cooling only VAV without fan or reheat

Device used to transfer waste heat into the atmosphere

Geographic coordinate in latitude/longitude formatted as C(lat,lng)

Related to a current value

Point with support to report a "real-time" current value

Error description when curStatus indicates error condition

Status of point's current value reading

Current value of a point

Movement of fluid or electricity

AC current phase angle

Current phase imbalance in a multiphase AC system

Magnitude of electrical current

Total harmonic current distortion

Variable name

ISO 8601 date as year, month, day

ISO 8601 timestamp followed by timezone identifier

Time between sunrise and sunset

Relating to direct current electricity

Direct current electricity

Create a new definition bound to the given symbol

Dew point temperature at which water vapor will form dew

Map of name/value tag pairs

AHU supplies air directly to the zone

Compass direction measured in degrees

Display name for an entity

Duct with air leaving an equipment

Documentation in simplified flavor of markdown

For human use

Tap water for drinking, washing, cooking, and flushing of toliets

Two ducts

Conduit used to convey air for HVAC

Ductwork configuration

Cold, hot, or neutral deck

Equipment section of ductwork

Number with a unit of time

Cooling using refrigerant vapar expansion and compression

Variable name

Associated with electricity, electric charge

Electrical current

Electrical energy consumed

Electricity meter

Electrical energy consumed per unit time

Electrical voltage, potential difference

Heating by the conversion of electrical energy

Measure of ability to do work

Pipe conveys fluid into an equipment

Top-level dicts with a unique identifier

Defines an eumeration of string keys

Equipment asset

Reference to equip which contains this entity

Duct used to expel air back outside

Variable name

Meter to measure flow rate and total volume of fluid f

Pipe which conveys fluid f

Tank which stores fluid f

Meter to measure energy transfer via fluid f

Device with a fan

VAV contains a fan with reheat

Feature namespace of definitions formatted as feature:name

Apparent temperature perceived when considering humidity, wind chill, and heat index

Filename extension such as "csv"

File format type definition

Storey of a building

Measure of volumetric flow of fluid

Meter to measure flow rate and total volume of fluid

Liquid or gas

Occurrences per unit time

Petroleum based oil burned for energy

Variable name

Substance with neither definite volume nor shape

Heating by the combustion of natural gas

Petroleum derived liquid used as a fuel source

Free form street address

Geographic city or locality name

Geographic coordinate as C(latitude,longitude)

Geographic country as ISO 3166-1 two letter code

Geographic subdivision of US state

Elevation above sea-level of the location

Geographic place

Geographic postal code

State or province name

Geographic street address and name

Two dimension table of columns and rows

Variable name

Device used to transfer heat between two fluids

Associated with a heating process

Processed used to heat a substance

Related to historization of data

Historized point with a history log of timestamp/value pairs

Error description when hisStatus indicates error condition

Indicates the way that history data is collected for a point

Status of point's history collection or synchronization

Indicates values which are a continuous stream of totalization

Having high degree of heat

Hot water used for HVAC heating or supply to hot taps

Boiler which outputs hot water

Plant used to generate hot water for heating

Duct carries air for heating

Heating using energy of hot water

Plant which supplies hot water to the entity

Percent relative humidity

Heating, ventilation, and air conditioning

Zone related to conditioning of a space's air temperature and quality

Variable name

Water in its solid form

Defines the unique identifier of an entity in system using a Ref value type

Lacking balance

List of library names to include

Duct with air entering an equipment

Input to a process, usually energy source

Unitless integer number

Specifies the inverse of a relationship

Energy received at a surface by area

Defines one or more supertypes of a subtyping relationship

Variable name

Variable name

Variable name

Pipe conveys fluid out of an equipment

Fill level of a vessel containing a fluid where 0% is empty and 100% if filled

Library module of symbolic definitions

Electromagnetic radiation in the visibile spectrum

Systems associated with illumination in the built environment

Zone related to lighting system

Substance with definite volume but takes the shape of its container

Ordered list of zero or more values

Variable name

Size or extent

Restore soemthing missed or lost

Water used used to makeup water loss through leaks, evaporation, or blowdown

Requires that the marker be applied to dicts which use the marker's subtypes

Marker labels a dict with typing information

Inclusive minimum for a numeric value

Equipment to meter a substance or electricity

Classifies a meter as a main site meter or submeter

Mime type formatted as type/subtype

Inclusive maximum for a numeric value

Duct where fresh outside and return air is mixed together

Marker added to a def to indicate inclusive subtyping

AHU discharge air is split into a duct per zone

Variable name

Not available used to indicate invalid or missing data

Fossil fuel energy source consisting largely of methane and other hydrocarbons

Duct carries air which by-passes both heating and cooling coils

Marker applied to a def to indicate that is not inherited into subtype definitions

Integer or floating point numbers annotated with an optional unit

Variable name

Value type of a collection or reference

Heating by the combustion of fuel oil

Uses working fluid itself for evaporation into the atmosphere

Output of a process

Duct to access fresh outside air

Variable name

Point which measures or controls phenomenon p

Point which measures or controls phenomenon p and quantity q

Circuit with multiple paths of flow

Electrical power factor

Aspect of scientific interest with measurable quantities

Conduit used to convey a fluid

Equipment section of piping

Central plant used to generate a substance for a process

Particulate Matter 10

Particulate Matter 2.5

Data point such as a sensor or actuator

Point value type

Classifies the point as a sensor, command, or setpoint

Energy consumed per unit time

Amount of atmospheric water vapor fallen including rain, sleet, snow, and hail

Defines a preferred unit to be used with a quantity

Measure of force applied

VAV damper modulates to control space temp

VAV damper or a control valve that modulates to maintain desired flow setpoint

Primary function of building as US Energy Star key

Industrial or HVAC process

Variable name

Point which measures or controls quantity q

Quantity measured against standard metric

Measurable property of a substance or phenomenon

Associates quantity as measurement of a phenomenon

Variable name

Relating to reactance

Reactive power or imaginary power

The entity receives from the referent

Piston compressor driven by a crankshaft

Reference to an entity

Fluid used in refrigeration and heat exchange

Supertype for tags which model relationships

Duct returning air back to equipment

Enclosed room of a building

Rotary screw compression

Variable name

Duct in equipment section s

Pipe in equipment section s which conveys fluid f

Pipe in equipment section s

Scalar is an atomic value kind

Point is a sensor, input, AI/BI

Circuit with single path of flow

One single duct

Site is a geographic location of the built environment

Main meter for the associated site

Site which contains the entity

Relating to energy from the sun

Energy received on surface of the earth from the sun

Substance with definite shape and volume

Point is a setpoint, soft point, internal control variable, schedule

Space is a three-dimensional volume in the built environment

Reference to space which contains this entity

Distance per unit time

Water in its gas form

Boiler which outputs steam

Plant used to generate steam for heating

Heating using energy of steam

Plant which supplies steam to the entity

What is stored by an equipment

Unicode string of characters

Submeters measure usage of a sub-system or equipment within a site

Matter in one the three states solid, liquid, or gas

The entity supplies to the referent

Symbol to a def

Variable name

Tank used to store a substance for temporary holding

Temperature - measure of hot and cold

Total harmonic distortion

Related to energy of heat

Meter to measure energy transfer via fluid

ISO 8601 time as hour, minute, seconds

Indicates a value tag which should not be persisted

This marker is applied to a relationship to indicate it is transitive

Three ducts

Total volatile organic compound (TVOC)

Timezone identifier from standard timezone database

Variable name

Unit identifier from standard unit database

Unverisal resource identifier

Variable name

Data value type

Variable name

Variable air volume terminal unit

Heating by the conversion of electrical energy

Heating using energy of hot water

VAV pulls air from outside the primary air flow

VAV pulls air from the primary air flow

Heating using energy of steam

How does the VAV pull in air

How does VAV modulate the temp based on duct pressure

Method used by VAV to reheat air

AHU supplies air to VAV terminal units

Version string formatted as decimal integers separated by a dot

Distance at which light can be clearly discerned

Electrical voltage, potential difference

AC voltage phase angle

AC voltage phase imbalance

Magnitude of electrical voltage

Variable name

Water in its liquid form

Associated with atmospheric air or phenomenon

Enumeration of weather conditions

Weather station

Wet bulb air temperature

Hyperlink to the subject's page on Wikipedia

Flow of air on surface of the Earth

Compass direction from which wind originates

Wind flow speed

Cabling used to convey electricity

Related to data which can written

Point with writable output using 16-level priority array

Error description when writeStatus indicates error condition

Current priority level for writeVal as number between 1 and 17

Current status of a writable point output

Current desired value to write to output

Variable name

Extended string - type name and string value encoding

Variable name

Original year of construction as four digit year such as 1980

Variable name

Related to spaces from a system perspective

Space associated with a specific system