Size of the outlet connection. Usually measured in millimeters (mm).
manual override
Height of the vibration isolator before tha application of load. Usually measured in millimeters (mm).
A boiler is a closed, pressure-rated vessel in which water or other fluid is heated using an energy source such as natural gas, heating oil, or electricity. The fluid in the vessel is then circulated out of the boiler for use in various processes or heating applications.
maximum working pressure
Indication of whether a switching device has a key operated lock (=TRUE) or not (= FALSE).
TRUE if the silencer has exterior insulation. FALSE if it does not.
An air-to-air heat recovery device employs a counter-flow heat exchanger between inbound and outbound air flow. It is typically used to transfer heat from warmer air in one chamber to cooler air in the second chamber (i.e., typically used to recover heat from the conditioned air being exhausted and the outside air being supplied to a building), resulting in energy savings from reduced heating (or cooling) requirements.
has space
Make-up water requirement. Usually measured in m3/s.
FirstCurvatureRadius should be defined as the base or left side radius of curvature value. Usually measured in millimeters (mm).
An entity used to define the physical spaces of the building. A building space contains devices or building objects.
Filter face velocity. Usually measured in m/s.
pump flow rate range
nominal supply voltage offset
nominal evaporating temmperature
water storage capacity
Building space
An electric time control is a device that applies control to the provision or flow of electrical energy over time.
open pressure drop
Valve
temperature classification
Maximum part load ratio as a fraction of nominal capacity.
The ratio between the imaginary part of the zero sequence impedance and the imaginary part of the positive impedance (i.e. imaginary part of the short-circuit voltage) of the transformer. Used for three-phase transformer which includes a N-conductor.
Defines the types of access (or cover) to a tank that may be specified. Note that covers are generally specified for rectangular tanks. For cylindrical tanks, access will normally be via a manhole.
Allowable outlet temperature of either the water or the steam. Usually measured in degrees Kelvin (K).
frame depth
nominal flow rate
Maximum secondary airflow that can be delivered. Usually measured in Pascals (Pa, N/m2).
Nominal supply water temperature (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
nominal sorrounding temperature heating
pipe connection enum
nominal condensing temperature
thermal transmittance
primary air flow rate range
Electric generator
nominal media surface velocity
Cooling tower
nominal pressure drop
A complex number that specifies the real and imaginary parts of the short-circuit voltage at rated current of a transformer given in %.
A controller is a device that monitors inputs and controls outputs within a building automation system. A controller may be physical (having placement within a spatial structure) or logical (a software interface or aggregated within a programmable physical controller).
An electric flow storage device is a device in which electrical energy is stored and from which energy may be progressively released.
Specifies the type of shading device.
Identifies the operating mode of the boiler.
real impedance ratio
Blade action.
Indicates media sources and corresponding names of ports (DistributionPort with FlowDirection=SINK and PredefinedType=AUDIOVISUAL) or aggregated audio/video components (AudioVisualAppliance).
Finish color for cooled beam.
flow arrangement
The configuration of the ports of a valve according to either the linear route taken by a fluid flowing through the valve or by the number of ports where: SINGLEPORT: Valve that has a single entry port from the system that it serves, the exit port being to the surrounding environment. ANGLED_2_PORT: Valve in which the direction of flow is changed through 90 degrees. STRAIGHT_2_PORT: Valve in which the flow is straight through. STRAIGHT_3_PORT: Valve with three separate ports. CROSSOVER_4_PORT: Valve with 4 separate ports.
energy source
Actual outside diameter of the tube in the tube bundle. Usually measured in millimeters (mm).
ColdLiquid: Evaporator is using liquid type of fluid to exchange heat with refrigerant. ColdAir: Evaporator is using air to exchange heat with refrigerant.
A fan is a device which imparts mechanical work on a gas. A typical usage of a fan is to induce airflow in a building services air distribution system.
A cooled beam (or chilled beam) is a device typically used to cool air by circulating a fluid such as chilled water through exposed finned tubes above a space. Typically mounted overhead near or within a ceiling, the cooled beam uses convection to cool the space below it by acting as a heat sink for the naturally rising warm air of the space. Once cooled, the air naturally drops back to the floor where the cycle begins again.
Initial new filter fluid resistance (i.e., pressure drop at the maximum air flowrate across the filter when the filter is new per ASHRAE Standard 52.1). Usually measured in Pascals (Pa, N/m2).
operational riterial
Nominal heating capacity. Usually measured in Watts (W, J/s).
Pump
Identifies whether hand-operated operation is provided as an override (= TRUE) or not (= FALSE). Note that this value should be set to FALSE by default in the case of a Hand Operated Actuator.
The maximum and minimum allowed voltage of the supply e.g. boundaries of 380V/440V may be applied for a nominal voltage of 400V.
coil length
nominal ua
secondary current type
second curvature radius
capacity weight
Size of the ventilating pipe(s). Usually measured in millimeters (mm).
ideal shaft power
Face area open to the airstream. Usually measured in square metre (m2).
number of gangs
Static deflection of the vibration isolator. Usually measured in millimeters (mm).
fire exit
The frequency that is going to be transformed and that runs into the transformer on the primary side. Usually measured in cycles/s or Hertz (Hz).
Nominal cooling capacity. Usually measured in Watts (W, J/s).
OpenCircuit: Exposes water directly to the cooling atmosphere. CloseCircuit: The fluid is separated from the atmosphere by a heat exchanger. Wet: The air stream or the heat exchange surface is evaporatively cooled. Dry: No evaporation into the air stream. DryWet: A combination of a dry tower and a wet tower.
The maximum time (in s) at which the motor could run with locked rotor when the motor is used in an EX-environment. The time indicates that a protective device should trip before this time when the starting current of the motor is slowing through the device.
is contained in
Total pressure drop across the filter. Usually measured in Pascals (Pa, N/m2).
is guarded
nominal static pressure
Specifies the required fail-safe position of the actuator.
nominal depth
Number of sections used.
Internal volume of evaporator (refrigerant side). Usually measured in cubic metre (m3).
Identifies the form of compensation used for power factor correction and radio suppression.
test pressure
Flow storage device
Chiller
final resistance
coil width
close off rating
has defrost
integrated lighting type
minimum spectrum
secondary voltage
nominal power consumption
A flow instrument reads and displays the value of a particular property of a system at a point, or displays the difference in the value of a property between two points. Instrumentation is typically for the purpose of determining the value of the property at a point in time. It is not the purpose of an instrument to record or integrate the values over time (although they may be connected to recording devices that do perform such a function). This entity provides for all forms of mechanical flow instrument (thermometers, pressure gauges etc.) and electrical flow instruments (ammeters, voltmeters etc.)
vibration transmissibility
Indication whether this object is designed to serve as an exit in the case of fire (TRUE) or not (FALSE). Here whether the transport element (in case of e.g., a lift) is designed to serve as a fire exit, e.g., for fire escape purposes.
The maximum weight that can be carried by the vibration isolator. Usually measured in kilograms (kg) or grams (g).
roughness
visible light transmittance
motor drive type
External surface area (both primary and secondary area). Usually measured in square metre (m2).
FixedExitingWaterTemp: The capacity is controlled to maintain a fixed exiting water temperature. WetBulbTempReset: The set-point is reset based on the wet-bulb temperature.
ventilating pipe size
ambient design dry bulb temperature
Fan
number of cells
external surface area
The nominal depth of the tank. Note: Not required for a horizontal cylindrical tank. Usually measured in millimeters (mm).
Burner
Represents devices of a building automation control system that are used to impart control over elements of a distribution system. (Definition adapated from https://standards.buildingsmart.org/IFC/RELEASE/IFC4_1/FINAL/HTML/schema/ifcsharedbldgserviceelements/lexical/ifcdistributioncontrolelement.htm)
Building object
Energy conversion device
Type of power driving the compressor.
flow resistance range
heat transfer surface area
face area
internal refrigerant volume
thermal mass heat capacity
Engine
fail position
A flow meter is a device that is used to measure the flow rate in a system.
Tank
power source
Particle geometric mean diameter associated with nominal efficiency. Usually measured in millimeters (mm).
nominal air flow rate
Building device
The finished length of the device. Usually measured in millimeters (mm).
A pump is a device which imparts mechanical work on fluids or slurries to move them through a channel or pipeline. A typical use of a pump is to circulate chilled water or heating hot water in a building services distribution system.
Indication of whether the motor is single speed, i.e. has a single winding (= FALSE) or multi-speed i.e.has part winding (= TRUE) .
Indication of whether the motor enclosure is guarded (= TRUE) or not (= FALSE).
number os sockets
electric motor efficiency
Allowable range of volume of fluid being pumped against the resistance specified. Usually measured in kg/s.
The thickness of the damper blade. Usually measured in millimeters (mm).
Alarm
te time
primary apparent power
Ambient design dry bulb temperature used for selecting the cooling tower. Usually measured in degrees Kelvin (K).
The type of frame used by the damper (e.g., Standard, Single Flange, Single Reversed Flange, Double Flange, etc.).
TRUE if the tube has a turbulator, FALSE if it does not.
SprayFilled: Water is sprayed into airflow. SplashTypeFill: water cascades over successive rows of splash bars. FilmTypeFill: water flows in a thin layer over closely spaced sheets.
primary voltage
maximum apparent power
short circuit voltage
Medical device
Close off rating. Usually measured in Pascals (Pa, N/m2).
valve pattern
Compressor shaft power under ideal conditions. Usually measured in Watts (W, J/s).
Electric motor
fluid flow rate range
The connection size of the to and from the pump. Usually measured in millimeters (mm).
Nominal fuel consumption rate required to produce the total boiler heat output. Usually measured in Watts (W, J/s).
Time of operation at maximum operational ambient air temperature. Measured in seconds (s) or days (d) or other units of time.
An electric generator is an engine that is a machine for converting mechanical energy into electrical energy.
maximum part load ratio
Overall Thermal Efficiency is defined as gross energy output of the heat transfer device divided by the energy input.
Defines the types of end shapes that can be used for preformed tanks. The convention for reading these enumerated values is that for a vertical cylinder, the first value is the base and the second is the top for a horizontal cylinder, the order of reading should be left to right. For a speherical tank, the value UNSET should be used.B5
is neutral primary terminal available
Whether the heat exchanger has defrost function or not.
Humidifier application. Fixed: Humidifier installed in a ducted flow distribution system. Portable: Humidifier is not installed in a ducted flow distribution system.
temperature rating
Nominal capacity. Usually measured in Watts (W, J/s).
starting time
Condenser
An evaporator is a device in which a liquid refrigerent is vaporized and absorbs heat from the surrounding fluid.
A lamp is an artificial light source such as a light bulb or tube.
Air to air heat recovery
Fouling factor of the tubes in the tube bundle. Usually measured in m2 Kelvin/Watt.
is pluggable outlet
Nominal fan power rate.Usually measured in Watts (W, J/s).
Internal volume of evaporator (water side). Usually measured in cubic metre (m3).
operation temperature range
frame type
An interceptor is a device designed and installed in order to separate and retain deleterious, hazardous or undesirable matter while permitting normal sewage or liquids to discharge into a collection system by gravity.
Indicates whether the meter has a connection for remote reading through connection of a communication device (set TRUE) or not (set FALSE).
nominal body length
Staggered tube row spacing. Usually measured in millimeters (mm).
contributed luminous flux
A coil is a device used to provide heat transfer between non-mixing media. A common example is a cooling coil, which utilizes a finned coil in which circulates chilled water, antifreeze, or refrigerant that is used to remove heat from air moving across the surface of the coil. A coil may be used either for heating or cooling purposes by placing a series of tubes (the coil) carrying a heating or cooling fluid into an airstream. The coil may be constructed from tubes bundled in a serpentine form or from finned tubes that give a extended heat transfer surface. Coils may also be used for non-airflow cases such as embedded in a floor slab.
minimum part load ratio
outlet temperature range
nominal volumetric capacity
storage type
The total effective or actual volumetric capacity of the tank. Usually measured in cubic metre (m3).B3
contains
nominal return water temperature cooling
A building represents a structure that provides shelter for its occupants or contents and stands in one place. The building is also used to provide a basic element within the spatial structure hierarchy for the components of a building project (together with site, storey, and space).
A transport element is a generalization of all transport related objects that move people, animals or goods within a building or building complex. The TransportElement defines the occurrence of a transport element.
color rendering index
(Tsol) The ratio of incident solar radiation that directly passes through a shading system (also named _e). Note the following equation Asol + Rsol + Tsol = 1
Sanitary terminal
Audio visual appliance
The compressibility of the vibration isolator.
The static pressure within the air stream that the fan must overcome to insure designed circulation of air. Usually measured in Pascals (Pa, N/m2).
Refrigerant class used by the compressor. CFC: Chlorofluorocarbons. HCFC: Hydrochlorofluorocarbons. HFC: Hydrofluorocarbons.
water inlet temperature range
vertical spacing
The power in VA (volt ampere) that has been transformed and is running out of the transformer on the secondary side. Usually measured in Watts (W, J/s).
Solar device
A tank is a vessel or container in which a fluid or gas is stored for later use.
working pressure
hydraulic diameter
weight
Number of panels.
Number of cells in one cooling tower unit.
nominal diameter
A compressor is a device that compresses a fluid typically used in a refrigeration circuit.
Blade edge.
The distribution flow element FlowMovingDevice defines the occurrence of an apparatus used to distribute, circulate or perform conveyance of fluids, including liquids and gases (such as a pump or fan), and typically participates in a flow distribution system.
In both the DIN and CIE standards, artificial light sources are classified in terms of their color appearance. To the human eye they all appear to be white the difference can only be detected by direct comparison. Visual performance is not directly affected by differences in color appearance.
An object in the building that can be controlled by devices, such as a door or a window that can be automatically opened or closed by an actuator. (Definition taken from SAREF 1.0)
A humidifier is a device that adds moisture into the air.
outlet connection size
nominal latent capacity
The designation of the standard applicable for the definition of the characteristics of the unit.
SecondCurvatureRadius should be defined as the top or right side radius of curvature value. Usually measured in millimeters (mm).
Flow instrument
Nominal or quoted =length, measured along the z-axis of the local coordinate system of the object, of the body of the object. Usually measured in millimeters (mm).
audio volume
Nominal return water temperature (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
Designation of the frame size according to the named range of frame sizes designated at the place of use or according to a given standard.
secondary frequency
Horizontal spacing between tubes in the tube bundle. Usually measured in millimeters (mm).
nominal cooling capacity
CounterFlow: Air and water flow enter in different directions. CrossFlow: Air and water flow are perpendicular. ParallelFlow: air and water flow enter in same directions.
Duct silencer
Internal modulation control.
An audio-visual appliance is a device that displays, captures, transmits, or receives audio or video. Audio-visual appliances may be fixed in place or may be able to be moved from one space to another. They may require an electrical supply that may be supplied either by an electrical circuit or provided from a local battery source. Audio-visual appliances may be connected to data circuits including specialist circuits for audio visual purposes only.
A chiller is a device used to remove heat from a liquid via a vapor-compression or absorption refrigeration cycle to cool a fluid, typically water or a mixture of water and glycol. The chilled fluid is then used to cool and dehumidify air in a building.
Boiler
Nominal surrounding temperature (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
spray type
operating weight
nominal filter face velocity
Space heaters utilize a combination of radiation and/or natural convection using a heating source such as electricity, steam or hot water to heat a limited space or area. Examples of space heaters include radiators, convectors, baseboard and finned-tube heaters. UnitaryEquipment should be used for packaged units supporting a combination of heating, cooling, and/or dehumidification; Coil should be used for coil-based floor heating.
The mechanism by which the valve function is achieved where: BALL: Valve that has a ported ball that can be turned relative to the body seat ports. BUTTERFLY: Valve in which a streamlined disc pivots about a diametric axis. CONFIGUREDGATE: Screwdown valve in which the closing gate is shaped in a configured manner to have a more precise control of pressure and flow change across the valve. GLAND: Valve with a tapered seating, in which a rotatable plug is retained by means of a gland and gland packing. GLOBE: Screwdown valve that has a spherical body. LUBRICATEDPLUG: Plug valve in which a lubricant is injected under pressure between the plug face and the body. NEEDLE: Valve for regulating the flow in or from a pipe, in which a slender cone moves along the axis of flow to close against a fixed conical seat. PARALLELSLIDE: Screwdown valve that has a machined plate that slides in formed grooves to form a seal. PLUG: Valve that has a ported plug that can be turned relative to the body seat ports. WEDGEGATE: Screwdown valve that has a wedge shaped plate fitting into tapered guides to form a seal.
Capacity of the transportation element measured in numbers of person.
nominal return water temperature heating
Indication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building.
The distribution flow element EnergyConversionDevice defines the occurrence of a device used to perform energy conversion or heat transfer and typically participates in a flow distribution system.
A duct silencer is a device that is typically installed inside a duct distribution system for the purpose of reducing the noise levels from air movement, fan noise, etc. in the adjacent space or downstream of the duct silencer device.
Integrated lighting in cooled beam.
Nominal fluid flow rate through the filter. Usually measured in m3/s.
Minimum liquid pressure at the pump inlet to prevent cavitation. Usually measured in Pascals (Pa, N/m2).
nominal heat transfer coefficient
has part winding
Compressor speed. Usually measured in cycles/s.
Whether or not hot gas bypass is provided for the compressor. TRUE = Yes, FALSE = No.
An indication of whether the neutral point of the primary winding is available as a terminal (=TRUE) or not (= FALSE).
Nominal total power consumption. Usually measured in Watts (W, J/s).
color appearance
nominal heat rejection rate
Elevation difference between cooling tower sump and the top of the tower. Usually measured in millimeters (mm).
List of the possible vector groups for the transformer from which that required may be set. Values in the enumeration list follow a standard international code where the first letter describes how the primary windings are connected, the second letter describes how the secondary windings are connected, and the numbers describe the rotation of voltages and currents from the primary to the secondary side in multiples of 30 degrees. D: means that the windings are delta-connected. Y: means that the windings are star-connected. Z: means that the windings are zig-zag connected (a special start-connected providing low reactance of the transformer). The connectivity is only relevant for three-phase transformers.
Average fluid velocity at the media surface. Usually measured in m/s.
isolator compressibility
SAREF4BLDG: an extension of SAREF for the building domain
blade thickness
electric generator efficiency
heat transfer type enum
Size of the inlet connection. Usually measured in millimeters (mm).
Capacity of the transport element measured by weight. Usually measured in kilograms (kg) or grams (g).
is illuminated
circuit type
The type of ballast used to stabilise gas discharge by limiting the current during operation and to deliver the necessary striking voltage for starting. Ballasts are needed to operate Discharge Lamps such as Fluorescent, Compact Fluorescent, High-pressure Mercury, Metal Halide and High-pressure Sodium Lamps. Magnetic ballasts are chokes which limit the current passing through a lamp connected in series on the principle of self-induction. The resultant current and power are decisive for the efficient operation of the lamp. A specially designed ballast is required for every type of lamp to comply with lamp rating in terms of Luminous Flux, Color Appearance and service life. The two types of magnetic ballasts for fluorescent lamps are KVG Conventional (EC-A series) and VVG Low-loss ballasts (EC-B series). Low-loss ballasts have a higher efficiency, which means reduced ballast losses and a lower thermal load. Electronic ballasts are used to run fluorescent lamps at high frequencies (approx. 35 - 40 kHz).
Actual inner diameter of the tube in the tube bundle. Usually measured in millimeters (mm).
arrangement
This is used to identify if the boiler has storage capacity (TRUE). If FALSE, then there is no storage capacity built into the boiler, such as an instantaneous hot water heater.
Building
connection size
Total nominal heat output as listed by the manufacturer. Usually measured in Watts (W, J/s).
limiting terminal size
pressure rating
An indication of whether there is an illuminated indicator to show that the switch is on (=TRUE) or not (= FALSE).
heat transfer dimension
first curvature radius
A solar device converts solar radiation into other energy such as electric current or thermal energy.
Nominal surrounding temperature (refers to nominal heating capacity). Usually measured in degrees Kelvin (K).
ambient design wet bulb temperature
Chiller evaporating temperature.Usually measured in degrees Kelvin (K).
Allowable range of frictional resistance against which the fluid is being pumped. Usually measured in Pascals (Pa, N/m2).
Physical object
nominal total pressure
media source
The ratio between the real part of the zero sequence impedance and the real part of the positive impedance (i.e. real part of the short-circuit voltage) of the transformer. Used for three-phase transformer which includes a N-conductor.
nominal moisture gain
impeller diameter
frame thickness
Nominal total pressure rise across the fan. Usually measured in Pascals (Pa, N/m2).
Filter
nominal supply water temperature cooling
initial resistance
is water storage heater
A valve is used in a building services piping distribution system to control or modulate the flow of the fluid.
standard
height
A medical device is attached to a medical piping system and operates upon medical gases to perform a specific function. Medical gases include medical air, medical vacuum, oxygen, carbon dioxide, nitrogen, and nitrous oxide.
is free hanging
Fraction of the visible light that is reflected by the glazing at normal incidence. It is a value without unit.
lift elevation difference
Nominal or quoted length, measured along the y-axis of the local coordinate system of the object, of the body of the object. Usually measured in millimeters (mm).
Nominal chiller efficiency under nominal conditions.
Enumeration defining the temperature classification of the space heater surface temperature. low temperature - surface temperature is relatively low, usually heated by hot water or electricity. high temperature - surface temperature is relatively high, usually heated by gas or steam.
Nominal rate of air flow. Usually measured in m3/s.
valve mechanism
Type of heat transfer between the two air streams.
shading device type
Switching device
nominal part load ratio
The maximum output power rating of the engine. Usually measured in Watts (W, J/s).
lamp ballast type
Fraction of the visible light that passes the shading system at normal incidence. It is a value without unit.
Flow controller
lamp maintenance factor
Allowable water circuit working pressure range. Usually measured in Pascals (Pa, N/m2).
Defines the types of pattern (or shape of a tank that may be specified.
Transport element
fouling factor
leakage fully closed
DistributionFlowDevice
has hot gas bypass
The frequency that has been transformed and is running out of the transformer on the secondary side. Usually measured in cycles/s or Hertz (Hz).
nominal supply water temperature heating
An indication of whether the neutral point of the secondary winding is available as a terminal (=TRUE) or not (= FALSE).
Heat exchange area. Usually measured in square metre (m2).
transformer vector group
water pressure range
Possible range of fluid flowrate that can be delivered. Usually measured in m3/s.
Light emitter nominal power. Usually measured in Watts (W, J/s).
Distribution device
Relation between a building space and the building or building space it belongs to.
Total volume of fluid in the tubes and their headers. Usually measured in cubic metre (m3).
The nominal width or, in the case of a horizontal cylindrical tank, the nominal diameter of the tank. Note: Not required for a vertical cylindrical tank. Usually measured in millimeters (mm).
Enumeration defining the energy source or fuel cumbusted to generate heat.
solar transmittance
Vibration isolator
nominal heat transfer area
nominal sorrounding temperature cooling
An actuator is a mechanical device for moving or controlling a mechanism or system. An actuator takes energy, usually created by air, electricity, or liquid, and converts that into some kind of motion.
nominal frequency
operating mode
refrigerant class
The voltage that is going to be transformed and that runs into the transformer on the primary side. Usually measured in Volts (V, W/A).
Damper
Maximum apparent power/capacity in VA (volt ampere). Usually measured in Watts (W, J/s).
Product of component mass and specific heat.
Nominal rate of water vapor added into the airstream. Usually measured in kg/s.
nominal particle geometric mean diameter
Ambient design wet bulb temperature used for selecting the cooling tower. Usually measured in degrees Kelvin (K).
staggered row spacing
frame size
air flow rate range min
isSpaceOf
secondary air flow rate range
The intended orientation for the damper as specified by the manufacturer.
Represents devices of a distribution system that facilitate the distribution of energy or matter, such as air, water or power. (Definition adapated from https://standards.buildingsmart.org/IFC/RELEASE/IFC4_1/FINAL/HTML/schema/ifcsharedbldgserviceelements/lexical/ifcdistributionflowelement.htm)
The spectrum of radiation describes its composition with regard to wavelength. Light, for example, as the portion of electromagnetic radiation that is visible to the human eye, is radiation with wavelengths in the range of approx. 380 to 780 nm (1 nm = 10 m). The corresponding range of colours varies from violet to indigo, blue, green, yellow, orange, and red. These colours form a continuous spectrum, in which the various spectral sectors merge into each other.
capacity control type
Indicates how the device is designed to be placed.
Minimum allowable air flow rate. Usually measured in m3/s.
Indicates types of switches which differs in functionality.
effective capacity
Input current when a motor armature is energized but not rotating. Usually measured in Ampere (A).
Volume between operating and overflow levels in cooling tower basin. Usually measured in cubic metre (m3).
Flow treatment device
heat exchange area
The thickness of the damper frame material. Usually measured in millimeters (mm).
start current factor
A text inscribed or applied to the switch as a legend to indicate purpose or function.
A communications appliance transmits and receives electronic or digital information as data or sound. Communication appliances may be fixed in place or may be able to be moved from one space to another. Communication appliances require an electrical supply that may be supplied either by an electrical circuit or provided from a local battery source.
Maximum working pressure. Usually measured in Pascals (Pa, N/m2).
The distribution flow element FlowStorageDevice defines the occurrence of a device that participates in a distribution system and is used for temporary storage (such as a tank).
A condenser is a device that is used to dissipate heat, typically by condensing a substance such as a refrigerant from its gaseous to its liquid state.
The time (in s) needed for the motor to reach its rated speed with its driven equipment attached, starting from standstill and at the nominal voltage applied at its terminals.
Relation between a building or a building space and the spaces it can be divided into.
Length of coil. Usually measured in millimeters (mm).
cover length
Electric appliance
Number of parallel fluid tube circuits.
maximum spectrum
blade action
remote reading
Flow terminal
A measure of the vertical deviations of the surface.
nominal capacity
imaginary impedance ratio
nominal sorrounding humidity cooling
mechanical operated
air flow rate range max
A unitary control element combines a number of control components into a single product, such as a thermostat or humidistat. A unitary control element provides a housing for an aggregation of control or electrical distribution elements that, in combination, perform a singular (unitary) purpose. Each item in the aggregation may have its own geometric representation and location.
Protective device
The distribution flow element FlowTreatmentDevice defines the occurrence of a device typically used to remove unwanted matter from a fluid, either liquid or gas, and typically participates in a flow distribution system.
A sanitary terminal is a fixed appliance or terminal usually supplied with water and used for drinking, cleaning or foul water disposal or that is an item of equipment directly used with such an appliance or terminal.
Particle geometric standard deviation associated with nominal efficiency.
Nominal surrounding humidity (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
is external
Electric time control
Tube bundle
Rate at which energy is transmitted through a body. Usually measured in Watts/m2 Kelvin.
Indication whether the element is operated machanically (TRUE) or not, i.e. manually (FALSE).
Controller
orientation
The color temperature of any source of radiation is defined as the temperature (in Kelvin) of a black-body or Planckian radiator whose radiation has the same chromaticity as the source of radiation. Often the values are only approximate color temperatures as the black-body radiator cannot emit radiation of every chromaticity value. The color temperatures of the commonest artificial light sources range from less than 3000K (warm white) to 4000K (intermediate) and over 5000K (daylight). Usually measured in degrees Kelvin (K).
The nominal length or, in the case of a vertical cylindrical tank, the nominal diameter of the tank. Usually measured in millimeters (mm).
InletVane: Control by adjusting inlet vane. VariableSpeedDrive: Control by variable speed drive. BladePitchAngle: Control by adjusting blade pitch angle. TwoSpeed: Control by switch between high and low speed. DischargeDamper: Control by modulating discharge damper.
basin reserve volume
An outlet is a device installed at a point to receive one or more inserted plugs for electrical power or communications. Power outlets are commonly connected within a junction box; data outlets may be directly connected to a wall. For power outlets sharing the same circuit within a junction box, the ports should indicate the logical wiring relationship to the enclosing junction box, even though they may be physically connected to a cable going to another outlet, switch, or fixture.
number of blades
A filter is an apparatus used to remove particulate or gaseous matter from fluids and gases.
net positive suction head
nominal efficiency
Nominal overall heat transfer coefficient associated with nominal heat transfer area. Usually measured in Watts/m2 Kelvin.
A damper typically participates in an HVAC duct distribution system and is used to control or modulate the flow of air.
cover width
A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument.
minimum working pressure
Internal surface area. Usually measured in square metre (m2).
thermal efficiency
application
Nominal water flow (refers to nominal heating capacity). Usually measured in m3/s.
Distribution control device
Defines the basic flow arrangements for the heat exchanger: COUNTERFLOW: Counterflow heat exchanger arrangement. CROSSFLOW: Crossflow heat exchanger arrangement. PARALLELFLOW: Parallel flow heat exchanger arrangement. MULTIPASS: Multipass flow heat exchanger arrangement. OTHER: Other type of heat exchanger flow arrangement not defined above.
number of sections
lamp compensation type
Indication of the form that readout from the meter takes. In the case of a dial read out, this may comprise multiple dials that give a cumulative reading and/or a mechanical odometer.
Factory fitted waterflow control system.
FanCycling: Fan is cycled on and off to control duty. TwoSpeedFan: Fan is switched between low and high speed to control duty. VariableSpeedFan: Fan speed is varied to control duty. DampersControl: Dampers modulate the air flow to control duty. BypassValveControl: Bypass valve modulates the water flow to control duty. MultipleSeriesPumps: Turn on/off multiple series pump to control duty. TwoSpeedPump: Switch between high/low pump speed to control duty. VariableSpeedPump: vary pump speed to control duty.
nominal water flow heating
A burner is a device that converts fuel into heat through combustion. It includes gas, oil, and wood burners.
Shading devices are purpose built devices to protect from the sunlight, from natural light, or screening them from view. Shading devices can form part of the facade or can be mounted inside the building, they can be fixed or operable.
An electric appliance is a device intended for consumer usage that is powered by electricity. Electric appliances may be fixed in place or may be able to be moved from one space to another. Electric appliances require an electrical supply that may be supplied either by an electrical circuit or provided from a local battery source.
Leakage when fully closed. Usually measured in m3/s.
light emitter nominal power
Overall body mass of the heater. Usually measured in kilograms (kg) or grams (g).
Evaporator
The normally expected maximum working pressure of the valve. Usually measured in Pascals (Pa, N/m2).
pattern type
Indicates how heat is transmitted according to the shape of the space heater.
Electric flow storage device
Total pressure drop across damper. Usually measured in Pascals (Pa, N/m2).
An electric motor is an engine that is a machine for converting electrical energy into mechanical energy.
nominal sensible capacity
Allowable minimum working pressure (relative to ambient pressure). Usually measured in Pascals (Pa, N/m2).
water requirement
internal surface area
Transformer
Number of blades.
A tangible object designed to accomplish a particular task in a building.
The nominal voltage of the supply. Usually measured in Volts (V, W/A).
number of rows
number of panels
A switch is used in a cable distribution system (electrical circuit) to control or modulate the flow of electricity. Switches include those used for electrical power, communications, audio-visual, or other distribution system types as determined by the available ports.
Unitary control element
The maximum pressure to which the valve has been subjected under test. Usually measured in Pascals (Pa, N/m2).
Nominal diameter or width of the tubes in the tube bundle. Usually measured in millimeters (mm).
evaporation coolant
The distribution flow element FlowTerminal defines the occurrence of a permanently attached element that acts as a terminus or beginning of a distribution system (such as an air outlet, drain, water closet, or sink). A terminal is typically a point at which a system interfaces with an external environment.
nominal length or diameter
nominal water flow cooling
Diameter of compressor impeller - used to scale performance of geometrically similar compressors. Usually measured in millimeters (mm).
Allowable water inlet temperature range. Usually measured in degrees Kelvin (K).
Information about changes compared to version 1.1.1: - Updated namespaces for compatibility with SAREF v3.
Evaporative cooler
inlet connection size
has exterior insulation
capacity people
A protective device tripping unit breaks an electrical circuit at a separate breaking unit when a stated electric current that passes through the unit is exceeded.
placement type
visible light reflectance
A fire suppression terminal has the purpose of delivering a fluid (gas or liquid) that will suppress a fire. A fire suppression terminal provides for all forms of sprinkler, spreader and other form of terminal that is connected to a pipework system and intended to act in the role of suppressing a fire.
A list of the secondary current types that can result from transformer output.
motor enclosure type
Space heater
Allowable operation ambient (air, fluid) temperature range. Usually measured in degrees Kelvin (K).
outside diameter
Generalization of all devices that participate in a distribution system. (Definition adapated from https://standards.buildingsmart.org/IFC/RELEASE/IFC4_1/FINAL/HTML/schema/ifcproductextension/lexical/ifcdistributionelement.htm)
A list of the available types of motor enclosure from which that required may be selected.
The method of valve operation where: DROPWEIGHT: A valve that is closed by the action of a weighted lever being released, the weight normally being prevented from dropping by being held by a wire, the closure normally being made by the action of heat on a fusible link in the wire FLOAT: A valve that is opened and closed by the action of a float that rises and falls with water level. The float may be a ball attached to a lever or other mechanism HYDRAULIC: A valve that is opened and closed by hydraulic actuation LEVER: A valve that is opened and closed by the action of a lever rotating the gate within the valve. LOCKSHIELD: A valve that requires the use of a special lockshield key for opening and closing, the operating mechanism being protected by a shroud during normal operation. MOTORIZED: A valve that is opened and closed by the action of an electric motor on an actuator PNEUMATIC: A valve that is opened and closed by pneumatic actuation SOLENOID: A valve that is normally held open by a magnetic field in a coil acting on the gate but that is closed immediately if the electrical current generating the magnetic field is removed. SPRING: A valve that is normally held in position by the pressure of a spring on a plate but that may be caused to open if the pressure of the fluid is sufficient to overcome the spring pressure. THERMOSTATIC: A valve in which the ports are opened or closed to maintain a required predetermined temperature. WHEEL: A valve that is opened and closed by the action of a wheel moving the gate within the valve.
The ratio of output capacity to intake capacity.
Non recoverable losses of luminous flux of a lamp due to lamp depreciation i.e. the decreasing of light output of a luminaire due to aging and dirt.
Total heat transfer area of the vessel. Usually measured in square metre (m2).
The operational mechanism for the damper operation.
Nominal fan wheel speed. Usually measured in cycles/s.
A heat exchanger is a device used to provide heat transfer between non-mixing media such as plate and shell and tube heat exchangers. HeatExchanger is commonly used on water-side distribution systems to recover energy from a liquid to another liquid (typically water-based), whereas AirToAirHeatRecovery is commonly used on air-side distribution systems to recover energy from a gas to a gas (usually air).
Compressor capacity under ideal conditions. Usually measured in Watts (W, J/s).
body mass
The current that is going to be transformed and that runs into the transformer on the primary side. Usually measured in Ampere (A).
ideal capacity
nominal heating capacity
The length measured along the x-axis in the local coordinate system or the radius (in the case of a circular shape in plan) of the cover of the oil interceptor. Usually measured in millimeters (mm).
The length (or depth) of the damper frame. Usually measured in millimeters (mm).
locked rotor current
A relation between a physical object and another physical object it contains.
The length measured along the x-axis in the local coordinate system of the cover of the oil interceptor. Usually measured in millimeters (mm).
Nominal return water temperature (refers to nominal heating capacity). Usually measured in degrees Kelvin (K).
Flow coefficient (the quantity of fluid that passes through a fully open valve at unit pressure drop), typically expressed as the Kv or Cv value for the valve.
The source of energy.
Coil
has lock
The number of sockets that may be connected. In case of inconsistency, sockets defined on ports take precedence.
blade edge
An evaporative cooler is a device that cools air by saturating it with water vapor.
nominal rotation speed
Defines the general material category intended to be stored.
In-line tube row spacing. Usually measured in millimeters (mm).
Hydraulic diameter. Usually measured in millimeters (mm).
Interceptor
Number of tube rows in the tube bundle assembly.
Filter fluid resistance when replacement is required (i.e., Pressure drop at the maximum air flowrate across the filter when the filter needs replacement per ASHRAE Standard 52.1). Usually measured in Pascals (Pa, N/m2).
nominal power rate
Compressor
The maximum terminal size capacity of the device. Usually measured in square metre (m2).
Maximum primary airflow that can be delivered. Usually measured in m3/s.
The CRI indicates how well a light source renders eight standard colors compared to perfect reference lamp with the same color temperature. The CRI scale ranges from 1 to 100, with 100 representing perfect rendering properties.
Indication of whether the outlet accepts a loose plug connection (= TRUE) or whether it is directly connected (= FALSE) or whether the form of connection has not yet been determined (= UNKNOWN).
The voltage that has been transformed and is running out of the transformer on the secondary side. Usually measured in Volts (V, W/A).
Actuator
blade shape
A relation between a physical object and the physical space in which it is contained.
Nominal or quoted length, measured along the x-axis of the local coordinate system of the object, of the body of the object. Usually measured in millimeters (mm).
Enumeration defining the heat transfer medium if applicable.
Indicates discrete audio volume levels and corresponding sound power offsets, if applicable. Missing values may be interpolated. Measured in watts.
An alarm is a device that signals the existence of a condition or situation that is outside the boundaries of normal expectation or that activates such a device. Alarms include the provision of break glass buttons and manual pull boxes that are used to activate alarms.
operation
The size of the connection to the valve (or to each connection for faucets, mixing valves, etc.). Usually measured in millimeters (mm).
isolator static deflection
heat transfer medium
A vibration isolator is a device used to minimize the effects of vibration transmissibility in a building.
Cooled beam
switch function
The distribution flow element FlowController defines the occurrence of elements of a distribution system that are used to regulate flow through a distribution system. Examples include dampers, valves, switches, and relays.
output capacity
A transformer is an inductive stationary device that transfers electrical energy from one circuit to another. Transformer is used to transform electric power; conversion of electric signals for other purposes is handled at other entities: Controller converts arbitrary signals, AudioVisualAppliance converts signals for audio or video streams, and CommunicationsAppliance converts signals for data or other communications usage.
Number of gangs/buttons on this switch.
Minimum primary airflow that can be delivered. Usually measured in m3/s.
compressor speed
Nominal water flow (refers to nominal cooling capacity). Usually measured in m3/s.
nominal body depth
Allowable part load ratio range.
nominal body width
Nominal latent capacity. Usually measured in Watts (W, J/s).
internal water volume
secondary current
Protective device tripping unit
This ontology extends the SAREF ontology for the building domain by defining building devices and how they are located in a building. This extension is based on the ISO 16739:2013 Industry Foundation Classes (IFC) standard for data sharing in the construction and facility management industries. The descriptions of the classes and properties extracted from IFC have been taken from the IFC documentation.
end shape type
The current that has been transformed and is running out of the transformer on the secondary side. Usually measured in Ampere (A).
length
water flow control system type
size
Minimum part load ratio as a fraction of nominal capacity.
Sum of the refrigeration effect and the heat equivalent of the power input to the compressor. Usually measured in Watts (W, J/s).
A cooling tower is a device which rejects heat to ambient air by circulating a fluid such as water through it to reduce its temperature by partial evaporation.
horizontal spacing
read out type
Information about changes compared to version 1.1.2: - see https://labs.etsi.org/rep/saref/saref4bldg/-/milestones/1.
nominal width or diameter
The power in VA (volt ampere) that has been transformed and that runs into the transformer on the primary side. Usually measured in Watts (W, J/s).
Shading device
color temperature
The nominal frequency of the supply. Usually measured in cycles/s or Hertz (Hz).
valve operation
Water storage capacity. Usually measured in cubic metre (m3).
Flow meter
internal control
Outlet
Humidifier
finish color
in line row spacing
(Rsol): The ratio of incident solar radiation that is reflected by a shading system (also named _e). Note the following equation Asol + Rsol + Tsol = 1
Heat exchanger
Flow moving device
Nominal pressure rating of the boiler as rated by the agency having jurisdiction. Usually measured in Pascals (Pa, N/m2).
Temperature rating. Usually measured in degrees Kelvin (K).
thermal conductivity
primary frequency
primary current
Width of coil. Usually measured in millimeters (mm
The weight of the device. Usually measured in kilograms (kg) or grams (g).
capacity control
Nominal heat transfer surface area associated with nominal overall heat transfer coefficient. Usually measured in square metre (m2).
Vertical spacing between tubes in the tube bundle.Usually measured in millimeters (mm).
The manner in which the pipe connection is made to the cooled beam.
is neutral secondary terminal available
Any Object that has a proper space region. (Definition extracted from DUL ontology)
Maximum allowable air flow rate. Usually measured in m3/s.
Fire suppression terminal
volumen
number of circuits
Lamp
Luminous flux is a photometric measure of radiant flux, i.e. the volume of light emitted from a light source. Luminous flux is measured either for the interior as a whole or for a part of the interior (partial luminous flux for a solid angle). All other photometric parameters are derivatives of luminous flux. Luminous flux is measured in lumens (lm). The luminous flux is given as a nominal value for each lamp. Usually measured in Lumen (lm, Candela Steradian).
nominal particle geometric standard deviation
has turbulator
access type
flow coefficient
nominal supply voltage
legend
Sensor
Nominal UA value.
The total nominal or design volumetric capacity of the tank. Usually measured in cubic metre (m3).
inside diameter
The vibration transmissibility percentage.
nomminal rotation speed
Chiller condensing temperature. Usually measured in degrees Kelvin (K).
Nominal sensible capacity. Usually measured in Watts (W, J/s).
solar reflectance
nominal energy consumption
An engine is a device that converts fuel into mechanical energy through combustion.
Nominal supply water temperature (refers to nominal heating capacity). Usually measured in degrees Kelvin (K).
Motor drive type: DIRECTDRIVE: Direct drive. BELTDRIVE: Belt drive. COUPLING: Coupling. OTHER: Other type of motor drive. UNKNOWN: Unknown motor drive type.
Communication appliance
The fluid used for the coolant in the evaporator.
Is it free hanging type (not mounted in a false ceiling)?
secondary apparent power
maximum supported weight
A tube bundle is a device consisting of tubes and bundles of tubes used for heat transfer and contained typically within other energy conversion devices, such as a chiller or coil.
Operating weight of the tank including all of its contents. Usually measured in kilograms (kg) or grams (g).
Blade shape. Flat means triple V-groove.
control strategy
maximum power output
A protective device breaks an electrical circuit when a stated electric current that passes through it is exceeded. A protective device provides protection against electrical current only (not as a general protective device). It may be used to represent the complete set of elements including both the tripping unit and the breaking unit that provide the protection. This may be particularly useful at earlier stages of design where the approach to breaking the electrical supply may be determined but the method of tripping may not. Alternatively, this entity may be used to specifically represent the breaking unit alone (in which case the tripping unit will also be specifically identified). This entity is specific to dedicated protective devices and excludes electrical outlets that may have circuit protection.
evaporation medium type
IEC. Start current factor defines how large the peek starting current will become on the engine. StartCurrentFactor is multiplied to NominalCurrent and we get the start current.
Pump rotational speed under nominal conditions. Usually measured in cycles/s.