All terms listed alphabetically

a

Variable name

absorption

Cooling process using energy from heat source such as hot water

ac

Relating to alternating current electricity

ac-elec

Alternating current electricity

ac-freq

Frequency of alternating current

active

Working, operative, effective

active-power

Active power or real power

ahu

Air handling unit

ahu-chilledWaterCooling

Cooling using transfer of heat to chilled water

ahu-dxCooling

Cooling using refrigerant vapar expansion and compression

ahu-elecHeating

Heating by the conversion of electrical energy

ahu-gasHeating

Heating by the combustion of natural gas

ahu-hotWaterHeating

Heating using energy of hot water

ahu-steamHeating

Heating using energy of steam

ahuCoolingProcess

Method used to cool air for conditioning spaces

ahuHeatingProcess

Method used to heat air for conditioning spaces

ahuRef

AHU which supplies air to an equipment or space

ahuZoneDelivery

AHU delivery method of conditioned air to the zone

air

The mixture of gases which surrounds the earth

air-temp

Dry bulb temperature

airCooling

Cooling by dissipating heat into the surrounding air

airQuality

Measurement of contaminants in the air

angle

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

apparent

Perceived quantity

apparent-power

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

area

Area of a shape or floor space

atmospheric

Related to the atmosphere of the earth

atmospheric-pressure

Barometric pressure exerted by the weight of the atmosphere

b

Variable name

barometric

Relating atmospheric pressure

baseUri

Base URI for normalizing relative URIs

battery

Device used to store electric energy

blowdown

Removal from container or pipe

blowdown-water

Water expelled from a system to remove mineral build up

boiler

Boilers generate hot water or steam for heating

boiler-gasHeating

Heating by the combustion of natural gas

boiler-oilHeating

Heating by the combustion of fuel oil

boilerHeatingProcess

Method used to heat water in a boiler

bool

Boolean value true or false

building

Site which is a building

bypass

Pipe used to bypass an equipment

c

Variable name

centrifugal

Compression via a continuous flow of fluid through an impeller

chilled

Cooled

chilled-water

Water used for HVAC cooling

chilled-water-plant

Plant used to generate chilled water for cooling

chilledBeamZone

AHU supplies air to chilled beam terminal units

chilledWaterCooling

Cooling using transfer of heat to chilled water

chiller

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

chiller-absorption

Cooling process using energy from heat source such as hot water

chiller-airCooling

Cooling by dissipating heat into the surrounding air

chiller-centrifugal

Compression via a continuous flow of fluid through an impeller

chiller-condenserCooling

Removal of heat through the process of water condensation

chiller-reciprocal

Piston compressor driven by a crankshaft

chiller-rotaryScrew

Rotary screw compression

chillerCoolingProcess

Processed used to remove heat from refrigerant

chillerMechanism

Primary mechanism of chiller

closedLoop

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

cloudage

Percentage of sky obscurred by clouds

cmd

Point is a command, actuator, AO/BO

co2

Carbon dioxide level

coldDeck

Duct carries air for cooling

condenser

Device or related to process of condensation

condenser-water

Water used used to remove heat through condensation

condenserCooling

Removal of heat through the process of water condensation

conduit

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

conveys

What type of substance or phenomenon conveyed by a conduit

cooling

Associated with a cooling process

cooling-process

Processed used to cool a substance

coolingCapacity

Measurement of a chiller ability to remove heat measured

coolingLoop

Open or closed loop

coolingOnly

Device without heating

coolingOnly-vav

Cooling only VAV without fan or reheat

coolingTower

Device used to transfer waste heat into the atmosphere

coord

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

cur

Related to a current value

cur-point

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

curErr

Error description when curStatus indicates error condition

curStatus

Status of point's current value reading

curVal

Current value of a point

current

Movement of fluid or electricity

current-angle

AC current phase angle

current-imbalance

Current phase imbalance in a multiphase AC system

current-magnitude

Magnitude of electrical current

current-thd

Total harmonic current distortion

d

Variable name

date

ISO 8601 date as year, month, day

dateTime

ISO 8601 timestamp followed by timezone identifier

daytime

Time between sunrise and sunset

dc

Relating to direct current electricity

dc-elec

Direct current electricity

def

Create a new definition bound to the given symbol

dewPoint

Dew point temperature at which water vapor will form dew

dict

Map of name/value tag pairs

directZone

AHU supplies air directly to the zone

direction

Compass direction measured in degrees

dis

Display name for an entity

discharge

Duct with air leaving an equipment

doc

Documentation in simplified flavor of markdown

domestic

For human use

domestic-water

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

dualDuct

Two ducts

duct

Conduit used to convey air for HVAC

ductConfig

Ductwork configuration

ductDeck

Cold, hot, or neutral deck

ductSection

Equipment section of ductwork

duration

Number with a unit of time

dxCooling

Cooling using refrigerant vapar expansion and compression

e

Variable name

elec

Associated with electricity, electric charge

elec-current

Electrical current

elec-energy

Electrical energy consumed

elec-meter

Electricity meter

elec-power

Electrical energy consumed per unit time

elec-volt

Electrical voltage, potential difference

elecHeating

Heating by the conversion of electrical energy

energy

Measure of ability to do work

entering

Pipe conveys fluid into an equipment

entity

Top-level dicts with a unique identifier

enum

Defines an eumeration of string keys

equip

Equipment asset

equipRef

Reference to equip which contains this entity

exhaust

Duct used to expel air back outside

f

Variable name

f-flow-meter

Meter to measure flow rate and total volume of fluid f

f-pipe

Pipe which conveys fluid f

f-tank

Tank which stores fluid f

f-thermal-meter

Meter to measure energy transfer via fluid f

fanPowered

Device with a fan

fanPowered-vav

VAV contains a fan with reheat

feature

Feature namespace of definitions formatted as feature:name

feelsLike

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

fileExt

Filename extension such as "csv"

filetype

File format type definition

floor

Storey of a building

flow

Measure of volumetric flow of fluid

flow-meter

Meter to measure flow rate and total volume of fluid

fluid

Liquid or gas

freq

Occurrences per unit time

fuelOil

Petroleum based oil burned for energy

g

Variable name

gas

Substance with neither definite volume nor shape

gasHeating

Heating by the combustion of natural gas

gasoline

Petroleum derived liquid used as a fuel source

geoAddr

Free form street address

geoCity

Geographic city or locality name

geoCoord

Geographic coordinate as C(latitude,longitude)

geoCountry

Geographic country as ISO 3166-1 two letter code

geoCounty

Geographic subdivision of US state

geoElevation

Elevation above sea-level of the location

geoPlace

Geographic place

geoPostalCode

Geographic postal code

geoState

State or province name

geoStreet

Geographic street address and name

grid

Two dimension table of columns and rows

h

Variable name

heatExchanger

Device used to transfer heat between two fluids

heating

Associated with a heating process

heating-process

Processed used to heat a substance

his

Related to historization of data

his-point

Historized point with a history log of timestamp/value pairs

hisErr

Error description when hisStatus indicates error condition

hisMode

Indicates the way that history data is collected for a point

hisStatus

Status of point's history collection or synchronization

hisTotalized

Indicates values which are a continuous stream of totalization

hot

Having high degree of heat

hot-water

Hot water used for HVAC heating or supply to hot taps

hot-water-boiler

Boiler which outputs hot water

hot-water-plant

Plant used to generate hot water for heating

hotDeck

Duct carries air for heating

hotWaterHeating

Heating using energy of hot water

humidity

Percent relative humidity

hvac

Heating, ventilation, and air conditioning

hvac-zone-space

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

i

Variable name

ice

Water in its solid form

id

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

imbalance

Lacking balance

includes

List of library names to include

inlet

Duct with air entering an equipment

inputs

Input to a process, usually energy source

int

Unitless integer number

irradiance

Energy received at a surface by area

is

Defines one or more supertypes of a subtyping relationship

j

Variable name

k

Variable name

l

Variable name

leaving

Pipe conveys fluid out of an equipment

level

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

lib

Library module of symbolic definitions

light

Electromagnetic radiation in the visibile spectrum

lighting

Systems associated with illumination in the built environment

lighting-zone-space

Zone related to lighting system

liquid

Substance with definite volume but takes the shape of its container

list

Ordered list of zero or more values

m

Variable name

magnitude

Size or extent

makeup

Restore soemthing missed or lost

makeup-water

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

mandatory

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

marker

Marker labels a dict with typing information

maxVal

Inclusive minimum for a numeric value

meter

Equipment to meter a substance or electricity

mime

Mime type formatted as type/subtype

minVal

Inclusive maximum for a numeric value

mixed

Duct where fresh outside and return air is mixed together

mixin

Marker added to a def to indicate inclusive subtyping

multiZone

AHU discharge air is split into a duct per zone

n

Variable name

na

Not available used to indicate invalid or missing data

naturalGas

Fossil fuel energy source consisting largely of methane and other hydrocarbons

neutralDeck

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

notInherited

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

number

Integer or floating point numbers annotated with an optional unit

o

Variable name

of

Value type of a collection or reference

oilHeating

Heating by the combustion of fuel oil

openLoop

Uses working fluid itself for evaporation into the atmosphere

outputs

Output of a process

outside

Duct to access fresh outside air

p

Variable name

p-point

Point which measures or controls phenomenon p

p-q-point

Point which measures or controls phenomenon p and quantity q

parallel

Circuit with multiple paths of flow

pf

Electrical power factor

phenomenon

Aspect of scientific interest with measurable quantities

pipe

Conduit used to convey a fluid

pipeSection

Equipment section of piping

plant

Central plant used to generate a substance for a process

pm10

Particulate Matter 10

pm25

Particulate Matter 2.5

point

Data point such as a sensor or actuator

pointKind

Point value type

pointType

Classifies the point as a sensor, command, or setpoint

power

Energy consumed per unit time

precipitation

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

prefUnit

Defines a preferred unit to be used with a quantity

pressure

Measure of force applied

pressureDependent

VAV damper modulates to control space temp

pressureIndependent

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

primaryFunction

Primary function of building as US Energy Star key

process

Industrial or HVAC process

q

Variable name

q-point

Point which measures or controls quantity q

quality

Quantity measured against standard metric

quantity

Measurable property of a substance or phenomenon

quantityOf

Associates quantity as measurement of a phenomenon

r

Variable name

reactive

Relating to reactance

reactive-power

Reactive power or imaginary power

reciprocal

Piston compressor driven by a crankshaft

ref

Reference to an entity

refrig

Fluid used in refrigeration and heat exchange

return

Duct returning air back to equipment

room

Enclosed room of a building

rotaryScrew

Rotary screw compression

s

Variable name

s-duct

Duct in equipment section s

s-f-pipe

Pipe in equipment section s which conveys fluid f

s-pipe

Pipe in equipment section s

scalar

Scalar is an atomic value kind

sensor

Point is a sensor, input, AI/BI

series

Circuit with single path of flow

singleDuct

One single duct

site

Site is a geographic location of the built environment

siteRef

Site which contains the entity

solar

Relating to energy from the sun

solar-irradiance

Energy received on surface of the earth from the sun

solid

Substance with definite shape and volume

sp

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

space

Space is a three-dimensional volume in the built environment

spaceRef

Reference to space which contains this entity

speed

Distance per unit time

steam

Water in its gas form

steam-boiler

Boiler which outputs steam

steam-plant

Plant used to generate steam for heating

steamHeating

Heating using energy of steam

stores

What is stored by an equipment

str

Unicode string of characters

substance

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

symbol

Symbol to a def

t

Variable name

tank

Tank used to store a substance for temporary holding

temp

Temperature - measure of hot and cold

thd

Total harmonic distortion

thermal

Related to energy of heat

thermal-meter

Meter to measure energy transfer via fluid

time

ISO 8601 time as hour, minute, seconds

transient

Indicates a value tag which should not be persisted

tripleDuct

Three ducts

tvoc

Total volatile organic compound (TVOC)

tz

Timezone identifier from standard timezone database

u

Variable name

unit

Unit identifier from standard unit database

uri

Unverisal resource identifier

v

Variable name

val

Data value type

var

Variable name

vav

Variable air volume terminal unit

vav-elecHeating

Heating by the conversion of electrical energy

vav-hotWaterHeating

Heating using energy of hot water

vav-parallel

VAV pulls air from outside the primary air flow

vav-series

VAV pulls air from the primary air flow

vav-steamHeating

Heating using energy of steam

vavAirCircuit

How does the VAV pull in air

vavModulation

How does VAV modulate the temp based on duct pressure

vavReheat

Method used by VAV to reheat air

vavZone

AHU supplies air to VAV terminal units

version

Version string formatted as decimal integers separated by a dot

visibility

Distance at which light can be clearly discerned

volt

Electrical voltage, potential difference

volt-angle

AC voltage phase angle

volt-imbalance

AC voltage phase imbalance

volt-magnitude

Magnitude of electrical voltage

w

Variable name

water

Water in its liquid form

weather

Associated with atmospheric air or phenomenon

weatherCond

Enumeration of weather conditions

weatherStation

Weather station

webBulb

Wet bulb air temperature

wikipedia

Hyperlink to the subject's page on Wikipedia

wind

Flow of air on surface of the Earth

wind-direction

Compass direction from which wind originates

wind-speed

Wind flow speed

wire

Cabling used to convey electricity

writable

Related to data which can written

writable-point

Point with writable output using 16-level priority array

writeErr

Error description when writeStatus indicates error condition

writeLevel

Current priority level for writeVal as number between 1 and 17

writeStatus

Current status of a writable point output

writeVal

Current desired value to write to output

x

Variable name

xstr

Extended string - type name and string value encoding

y

Variable name

yearBuilt

Original year of construction as four digit year such as 1980

z

Variable name

zone

Related to spaces from a system perspective

zone-space

Space associated with a specific system