ph
Cooling process using energy from heat source such as hot water
Alternating current electricity
AC Electricity meter
An AC EVSE port delivers ac electricity to a single EV charging inlet at a time
Frequency of an alternating current waveform
Active energy in an AC eletrical power system
Active power or real power
Equipment to move or control a mechanism
Air Handling Unit
AHU delivery method of conditioned air to the zone
The mixture of gases which surrounds the earth
System for air treatment to control its temperature, humidity, cleanliness, and distribution to meet the requirements of a conditioned space
Cooling by dissipating heat into the surrounding air
System consisting of one or more fans that remove air from the building
HVAC equipment that conditions and delivers air via one or more fans
Concentration of contaminants in the air
System for moving air to maintain indoor thermal comfort and/or air quality
Dry bulb temperature
Equipment in air distribution systems which terminate at the space
Rate of air movement as distance over time
System that supplies or removes air by natural or mechanical means to or from any space in order to provide outdoor air to the space
Ability of air handling equip to adjust volume of air flow
Apparent energy in an AC eletrical power system
Apparent power
Aquifer Thermal Energy Storage system
Design type of the ATES underground system
Barometric pressure exerted by the weight of the atmosphere
Attribute is a single datum of static information on an entity
See Synthetics chapter
Equipment used to store electric energy
Plant or animal material used as fuel to produce electricity or heat
Heating by the combustion of biomass
Water expelled from a system to remove mineral build up
Equipment to generate hot water or steam for heating
Branch selector used for heat recovery in a VRF system
Pipe used to bypass an equipment
An assembly of one or more insulated conductors
Constant air volume terminal unit
Compression via a continuous flow of fluid through an impeller
Formaldehyde (CH₂O)
Concentration of formaldehyde (CH₂O) in the air
Methane (CH₄)
Greenhouse gas emission of methane (CH₄) into the air
Conditions a space using a heat exchanger integrated into the ceiling
AHU supplies air to chilled beam terminal units
Water cooled for use in HVAC and industrial processes
Cooling using transfer of heat to chilled water
Plant used to generate chilled water for cooling
System that circulates water in its liquid state below ambient temperature for cooling a space or process
Equipment to remove heat from a liquid
Primary mechanism of chiller
Pipe used to circulate fluid through an equipment or system
Electrical circuit and its associated components such as breakers
Working fluid is kept separate from fluid used for heat transfer into the atmosphere
The ATES uses closed piping to transport a water/glycol mixture through the ground
Percentage of sky obscured by clouds
Point is a command, actuator, AO/BO
Carbon monoxide (CO)
Carbon dioxide (CO₂)
Concentration of carbon dioxide (CO₂) in the air
Greenhouse gas emission of carbon dioxide (CO₂) into the air
Concentration of carbon monoxide (CO) in the air
Combustible sedimentary rock
Heating by the combustion of coal
Heat exchanger used to heat or cool air
Duct carries air for cooling
Water supplied to cold taps
See Synthetics chapter
See Synthetics chapter
Computed point
General purpose computer
Abundance of substance in the total volume of a mixture
Liquid phase produced by the condensation of steam or other gas
Removal of heat through the process of water condensation
Open or closed loop for condenser working fluid
Water used used to remove heat through condensation
System that circulates water in its liquid state for rejecting heat from a space or process
Duct, pipe, or cable to convey a substance or phenomenon
Delivers a constant volume of air flow
Microprocessor based device used in a control system
Panel housing controllers and networking gear
Relatively cool water without active chilling
Coil used to cool air
Processed used to cool a substance
Equipment to transfer waste heat into the atmosphere
Geographic coordinate in latitude/longitude in decimal degrees
Computer Room Air Conditioner
Point with support to report a "real-time" current value
Status of point's current value reading
AC current phase angle
AC current phase imbalance
Root-mean-square (RMS) magnitude of AC electrical current
Total harmonic distortion (THD) of AC current
Actuator to regulate the flow of air
Space used to house computer and networking gear
Time between sunrise and sunset
Direct current electricity
DC Electricity meter
A DC EVSE port delivers dc electricity to a single EV charging inlet at a time
Microprocessor based hardware device
Dew point temperature at which water vapor will form dew
Liquid fuel specifically designed for use in diesel engines
AHU supplies air directly to the zone
Compass direction measured in degrees
Duct for air leaving an equipment
Displacement power factor, which accounts for the phase angle between voltage and current but excludes effects of nonlinear waveforms ( harmonic distortion)
Distortion power factor, which measures the component of power factor attributable to harmonic distortion in voltage and current waveforms
Dedicated Outside Air System
System that circulates potable cold water in its liquid state for purposes other than space cooling and process requirements
System that circulates potable hot water in its liquid state for purposes other than space heating and process requirements
Tap water for drinking, washing, cooking, and flushing of toilets
System that circulates potable water in its liquid state for purposes other than space conditioning and process requirements
The ATES has one or more pairs of a separate warm and cool well
The ATES is as a doublet, but with specific warm and cool wells linked together
Two ducts
Conduit used to convey air for HVAC
Ductwork configuration
Cold, hot, or neutral deck
Equipment section of ductwork
Cooling using direct expansion of a refrigerant vapor
Heating using direct expansion of a refrigerant vapor
Duct to access fresh outside air only for economizing, not ventilation
Associated with electricity or with electrical force, power, or energy
Quadrant used to describe the flow of AC electric power
Electrical current
Active power averaged over a regular interval
Electrical energy
Heating by the conversion of electrical energy
Electricity meter
Physical housing for electrical circuits, fuses, and breakers
Rate of electrical energy transfer
System that generates, converts, distributes, and/or stores electricity
Electrical voltage, potential difference
Enclosure used to move people between floors
Amount of a substance discharged into the air
Measure of ability to do work
Pipe conveys fluid into an equipment
Total heat content of a system
Equipment asset
Moving staircase used to move people between floors
The electrical cable between an EvsePort and an EV charging inlet on a vehicle
Physical type of EvseCable
Tethered cable with connector, socket/receptacle, or wireless inductive charging pad on an EVSE
Equipment that dispenses electricity to an EV
Equipment that supports the delivery of electricity to charging inlets located on EVs
An EVSE port delivers electricity to a single EV charging inlet at a time
A power converter that has a dc electrical output applied to a DcEvsePort
A system that supplies electricity to EVSE assembly equipment and its auxiliary loads
Duct used to expel air back outside
Motor used with a fan to create air flow
Fan Coil Unit
Feature namespace of definitions identified as lib::feature:name
Apparent temperature perceived when considering humidity, wind chill, and heat index
Storey of a building
Measure of volumetric flow of fluid
System to change direction of substance flow
Meter to measure flow rate and total volume of fluid
Duct for exhausting combustion
Liquid or gas
Occurrences per unit time
Petroleum based oil burned for energy
Heating by the combustion of fuel oil
Ventilation equipment to limit exposure to hazardous fumes
Substance with neither definite volume nor shape
Petroleum derived liquid used as a fuel source
Geographic country as ISO 3166-1 two letter code
Geographic place
State or province name
Floor at ground level
Water present under the ground or from a well
Pipe used as central connection or manifold for other piping runs
Equipment to transfer heat between two working fluids
Coil used to heat air
Processed used to heat a substance
Hydrofluorocarbons
Greenhouse gas emission of hydrofluorocarbons into the air
Indicates the way that history data is collected for a point
Historized point with a history log of timestamp/value pairs
Status of point's history collection or synchronization
Duct carries air for heating
Hot water used for HVAC heating or supplied to hot taps
Boiler which outputs hot water
Heating using energy of hot water
Plant used to generate hot water for heating
System that circulates water in its liquid state for heating a space or process
Equipment which adds moisture to air to increase humidity
Percent relative humidity
Operational mode for HVAC equipment
Zone related to conditioning of a space's air temperature and quality
Water in its solid form
Power factor according to the IEC convention defines a positive or negative sign based on the direction of active power flow
Power factor according to the IEEE convention defines a positive or negative sign based on whether the load is capacitive or inductive
Luminous flux hitting the inside of the sphere at a specific point
Duct with air entering an equipment
Energy received at a surface by area
Kind name used to identity a value data type
Portable laptop computer
Pipe conveys fluid out of an equipment
Range from 0% to 100%
Electromagnetic radiation in the visible spectrum
Sensed or controlled dimming level of electrical lighting
System designed to provide lighting
Zone related to lighting system
Substance with definite volume but takes the shape of its container
Light fixture using electricity to provide illumination
Energy of light in a given direction
Total perceived light in all directions
Perceived light in a particular direction per unit solid angle
Water used used to makeup water loss through leaks, evaporation, or blowdown
Makeup Air Unit
Equipment to meter a substance or phenomenon
Classifies a meter as a main site meter or submeter
Duct where fresh outside air and return air is mixed together
See Synthetics chapter
See Synthetics chapter
Machine learning point
Machine learning variable representing both model inputs and outputs
Cellular phone providing telecommunication over radio links
The ATES has only one physical well
Equipment that converts electrical energy into mechanical energy
Conveyor to move people across a horizontal or inclined plane
AHU discharge air is split into a duct per zone
Nitrous oxide (N₂O)
Greenhouse gas emission of nitrous oxide (N₂O) into the air
Fossil fuel energy source consisting largely of methane and other hydrocarbons
Heating by the combustion of natural gas
Logical communications network between two or more devices
Microprocessor device used to establish networks
Networking device used to route data between different networks
Networking device used to connect devices on the same network
Duct carries air which by-passes both heating and cooling coils
Nitrogen trifluoride (NF₃)
Greenhouse gas emission of nitrogen trifluoride (NF₃) into the air
Ammonia (NH₃)
Concentration of ammonia (NH₃) in the air
Nitrogen dioxide (NO₂)
Concentration of nitrogen dioxide (NO₂) in the air
Oxygen (O₂) - the common dioxygen allotrope in the air
Ozone (O₃)
Concentration of ozone (O₃) in the air
Uses working fluid itself for evaporation into the atmosphere
See Synthetics chapter
See Synthetics chapter
Duct to access fresh outside air for both ventilation and economizer
Enclosure for electrical and control equipment
VAV pulls air from outside the primary air flow
Electric power factor
Power factor scope
Standard for interpreting power factor's positive or negative sign
Perfluorocarbons
Greenhouse gas emission of perfluorocarbons into the air
Project Haystack entity
Single-phase measurement of an electric quantity in a multi-phase AC electric power system
Number of phases for an AC electrical power system or connected equipment
Aspect of scientific interest with measurable quantities
Telephone used for voice telecommunication
Conduit used to convey a fluid
Equipment section of piping
Central plant used to generate a substance for a process
Plant piping loop
Particulate matter 0.1
Concentration of particulate matter 0.1 in the air
Particulate matter 10
Concentration of particulate matter 10 in the air
Particulate matter 2.5
Concentration of particulate matter 2.5 in the air
Data point such as a sensor or actuator
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
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
Pipework which circulates closest to the energy source
By-product of natural gas processing and petroleum refining (C₃H₈)
Heating by the combustion of propane
Motor used with a pump to move fluid
Water expelled from a system to remove contaminants
Measurable property of a substance or phenomenon
Enclosure or chassis used to mount computer and networking gear
HVAC equipment that conditions a space without forced air
Heats a space using pipes or cables embedded beneath floor
Heats a space using exposed pipes or coils
Reactive energy in an AC eletrical power system
Reactive power or imaginary power
Piston compressor driven by a crankshaft
Fluid used in refrigeration and heat exchange
Refrigerant distribution to fulfill all or parts of a refrigeration cycle
Duct returning air back to equipment
The roof floor is the topmost level of a building
Enclosed room of a building
Rotary screw compression
Roof Top Unit
Pipework which circulates closest to the building or end use
Point is a sensor, input, AI/BI
VAV pulls air from the primary air flow
General purpose computer used as a server
Sulphur hexafluoride (SF₆)
Greenhouse gas emission of sulphur hexafluoride (SF₆) into the air
See Synthetics chapter
See Synthetics chapter
See Synthetics chapter
Simulation point
One single duct
Single-phase AC electricity
Site is a geographic location of the built environment
Main meter for the associated site
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
Distance per unit time
Split-phase AC electricity
State of charge (SoC) of an electric battery
Water in its gas form
Boiler which outputs steam
Heating using energy of steam
Plant used to generate steam for heating
System that circulates water in its vapor state for heating a space or process
Submeters measure usage of a sub-system or equipment within a site
Matter in one the three states solid, liquid, or gas
Floor below ground level
Symbol to a def
See Synthetics chapter
See Synthetics chapter
Synthetic point with computed operational data
Grouping of related equipment dedicated to a single application
Mobile device with touch screen for user input
Tank used to store a substance for temporary holding
Temperature - measure of hot and cold
Pipework which circulates within the building
Senses and controls temperature of space in HVAC system
Three-phase AC electricity
Three ducts
True power factor, which includes effects of harmonic distortion
Total volatile organic compound (TVOC)
Concentration of total volatile organic compounds (TVOC) in the air
Two-phase AC electricity
Similar to a doublet, but water always flows in the same direction from the extraction to the infiltration well
Unit Ventilator
Uninterruptible power supply
Actuator to regulate the flow of fluid
Delivers a variable volume of air flow
Variable air volume terminal unit
AHU supplies air to VAV terminal units
How does the VAV pull in air
How does VAV modulate the temp based on duct pressure
Duct to access fresh outside air only for ventilation, not economizing
Equipment to move humans and materials
VFD frequency measured in "Hz"
VFD speed measured in "%"
Distance at which light can be clearly discerned
AC voltage phase angle
AC voltage phase imbalance
Root-mean-square (RMS) magnitude of AC electrical voltage
Total harmonic distortion (THD) of AC voltage
Three dimensional space occupied by a substance
Cooling only VRF system can only cool
Equipment used in VRF systems
Heat pump VRF system can either heat, or cool, but not at the same time
Heat recovery VRF system can operate cooling and heating by each indoor unit independently, at the same time
Indoor unit in a VRF system
Indoor unit fan coil unit in a VRF system
Outdoor unit with one or more compressors in a VRF system
Group of outdoor units in a VRF system
Variable refigerant flow system
Relatively warm water without active heating
Water in its liquid form
Cooling using transfer of heat to water which is not explicitly chilled
System that supplies or collects potable or non-potable water in any state
Associated with atmospheric air or phenomenon
Enumeration of weather conditions
Enumeration of weather conditions
Time between sunrise and sunset
Weather station observation point
Logical weather station and its measurement points
A well is a source of groundwater and potentially thermal energy
Wet bulb air temperature
Flow of air on surface of the Earth
Compass direction from which wind originates
Wind flow speed
Cabling used to convey electricity or data
Point with writable output using 16-level priority array
Current status of a writable point output
Extended string - type name and string value encoding
Space associated with a specific system