Competency Question;Answer;;;;;;;;;;;;;;;;;;
Which properties has a tank?;"- access type: {none, loose cover, manhole, secured cover, secured cover with manhole, etc.}. 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.
;storage type: {ice, water, rain water, waste water, potable water, fuel, oil, etc.}. Defines the general material category intended to be stored.
;nominal lenght or diameter: real. The nominal length or, in the case of a vertical cylindrical tank, the nominal diameter of the tank. Usually measured in millimeters (mm).
;nominal width or diameter: real. 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).
;nominal depth: real. The nominal depth of the tank. Note: Not required for a horizontal cylindrical tank. Usually measured in millimeters (mm).
;nominal capacity: real. The total nominal or design volumetric capacity of the tank. Usually measured in cubic metre (m3).
;effective capacity: real. The total effective or actual volumetric capacity of the tank. Usually measured in cubic metre (m3).B3
;operating wight: real. Operating weight of the tank including all of its contents. Usually measured in kilograms (kg) or grams (g).
;pattern type: {horizontal cylinder, vertical cylinder, rectangular, etc.}. Defines the types of pattern (or shape of a tank that may be specified.
;end shape type: {concave convex, flat convex, convex convex, concave flat, flat flat, etc.}. 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
;first curvature radius: real. FirstCurvatureRadius should be defined as the base or left side radius of curvature value. Usually measured in millimeters (mm).
;second curvature radius: real. SecondCurvatureRadius should be defined as the top or right side radius of curvature value. Usually measured in millimeters (mm).
;number of sections: integer. Number of sections used in the construction of the tank. Default is 1. Note: All sections assumed to be the same size.";;;;;;;;;;;;;;;;;;
Which properties has a Humidifier?;"- application: {portable, fixed, etc.}. Humidifier application. Fixed: Humidifier installed in a ducted flow distribution system. Portable: Humidifier is not installed in a ducted flow distribution system.
;weight: real. The weight of the humidifier. Usually measured in kilograms (kg) or grams (g).
;nominal moisture gain: real. Nominal rate of water vapor added into the airstream. Usually measured in kg/s.
;nominal air flow rate: real. Nominal rate of air flow into which water vapor is added. Usually measured in m3/s.
;internal control: {on off, stepped, modulating, none, etc.}. Internal modulation control.
;water requirement: ratio. Make-up water requirement. Usually measured in m3/s.";;;;;;;;;;;;;;;;;;
Which properties has a Heat exchanger?;- arrangement: {counter flow, cross flow, parallel flow, multipass, etc.}. 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.;;;;;;;;;;;;;;;;;;
Which properties has a transport element?;"- capacity people: natural. Capacity of the transportation element measured in numbers of person.
;capacity weight: real. Capacity of the transport element measured by weight. Usually measured in kilograms (kg) or grams (g).
;fire exit: boolean. 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.";;;;;;;;;;;;;;;;;;
Which properties has a Lamp?;"- Contributed luminous flux: real. 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).
;Light emitter nominal power: real. Light emitter nominal power. Usually measured in Watts (W, J/s).
;Lamp maintenance factor:  real. 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.
;Lamp ballast type: {conventional, eletronic, lowloss, etc.} 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).
;Lamp compensation type: {capacitive, inductive, etc.} Identifies the form of compensation used for power factor correction and radio suppression.
;Color appearance: string. 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.
;Spectrum: real-real.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.
;Color tempeature: real. 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).
;Color rendering index: integer. 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.";;;;;;;;;;;;;;;;;;
Which properties has a Electric generator?;"- Electric generator efficiency: positive ratio. The ratio of output capacity to intake capacity.
;Start current factor: real. 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.
;Maximum power output: real. The maximum output power rating of the engine. Usually measured in Watts (W, J/s).";;;;;;;;;;;;;;;;;;
Which properties has a Burner?;- energy source: {coal, coal pulverized, elecricity, gas, oil, propaen, wood, wood chip, wood pellet, wood pulverized, etc.}. Enumeration defining the energy source or fuel cumbusted to generate heat.;;;;;;;;;;;;;;;;;;
Which properties has a Engine?;- energy source: {diesel, gasoline, natural gas, propane, biodiesel, sewage gas, hydrogen, bifuel, etc.}. The source of energy.;;;;;;;;;;;;;;;;;;
Which properties has a Evaporator?;"- evaporation medium type: {cold liquid, cold air, etc.}. ColdLiquid: Evaporator is using liquid type of fluid to exchange heat with refrigerant. ColdAir: Evaporator is using air to exchange heat with refrigerant.
;evaporation coolant: {water, brine, clycol, etc.}. The fluid used for the coolant in the evaporator.
;refrigerant class: {CFC (Chlorofluorocarbons), HCFC (Hydrochlorofluorocarbons), HFC (Hydrofluorocarbons), hydrocarbons, ammonia, CO2, H2O, etc.}.  Refrigerant class used by the compressor. CFC: Chlorofluorocarbons. HCFC: Hydrochlorofluorocarbons. HFC: Hydrofluorocarbons.
;external surface area: real. External surface area (both primary and secondary area). Usually measured in square metre (m2).
;internal surface area: real. Internal surface area. Usually measured in square metre (m2).
;internal refrigerant volume: real. Internal volume of evaporator (refrigerant side). Usually measured in cubic metre (m3).
;internal water volume: real. Internal volume of evaporator (water side). Usually measured in cubic metre (m3).
;nominal heat transfer area: real. Nominal heat transfer surface area associated with nominal overall heat transfer coefficient. Usually measured in square metre (m2).
;nominal heat transfer coefficient: real. Nominal overall heat transfer coefficient associated with nominal heat transfer area. Usually measured in Watts/m2 Kelvin.";;;;;;;;;;;;;;;;;;
Which properties has an actuator?;"- Fail position: {fail open, fail closed}. Specifies the required fail-safe position of the actuator.
;Manual override: boolean. 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.";;;;;;;;;;;;;;;;;;
Which properties has a Evaporative cooler?;"- flow arrangement: {counter flow, cross flow, parallel flow, etc.}. 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.
;heat exchange area: real. Heat exchange area. Usually measured in square metre (m2).
;operational temperature range: [real, real]. Allowable operation ambient air temperature range. Usually measured in degrees Kelvin (K).
;water requirement: real. Make-up water requirement. Usually measured in m3/s.";;;;;;;;;;;;;;;;;;
Which properties has a Pump?;"- flow rate range: [real, real]. Allowable range of volume of fluid being pumped against the resistance specified. Usually measured in kg/s.
;flow resistance range: [real, real]. Allowable range of frictional resistance against which the fluid is being pumped. Usually measured in Pascals (Pa, N/m2).
;connection size: positive real. The connection size of the to and from the pump. Usually measured in millimeters (mm).
;temperature range: [real, real]. Allowable operational range of the fluid temperature. Usually measured in degrees Kelvin (K).
;net positive suction head: real. Minimum liquid pressure at the pump inlet to prevent cavitation. Usually measured in Pascals (Pa, N/m2).
;nomminal rotation speed: real. Pump rotational speed under nominal conditions. Usually measured in cycles/s.";;;;;;;;;;;;;;;;;;
Which properties has a Air to air heat recovery?;"- Heat transfer type enum: {sensible, laltent, etc.}. Type of heat transfer between the two air streams.
;has defrost: booelan. has the heat exchanger has defrost function or not.
;operational temperature range: [real, real]. Allowable operation ambient air temperature range. Usually measured in degrees Kelvin (K).
;primary air flow rate range: [real, real]. possible range of primary airflow that can be delivered. Usually measured in m3/s.
;secondary air flow rate range: [real, real]. possible range of secondary airflow that can be delivered. Usually measured in Pascals (Pa, N/m2).";;;;;;;;;;;;;;;;;;
Which properties has a Duct silencer?;"- hydraulic diameter: real. Hydraulic diameter. Usually measured in millimeters (mm).
;lenght: real. The finished length of the silencer. Usually measured in millimeters (mm).
;weight: real. The weight of the silencer. Usually measured in kilograms (kg) or grams (g).
;air flow rate range: [real, real]. Possible range of airflow that can be delivered. Usually measured in m3/s.
;working pressure range: [real, real]. Allowable minimum and maximum working pressure (relative to ambient pressure). Usually measured in Pascals (Pa, N/m2).
;temperature range: [real, real]. Allowable minimum and maximum temperature. Usually measured in degrees Kelvin (K).
;has exterior insulation: boolean. TRUE if the silencer has exterior insulation. FALSE if it does not.";;;;;;;;;;;;;;;;;;
Which properties has a Cooled beam?;"- is free hanging: boolean. Is it free hanging type (not mounted in a false ceiling)?
;water flow control system type: {none, on off valve, 2 way valve, 3 way valve, etc.} Factory fitted waterflow control system.
;water pressure range: [real, real]. Allowable water circuit working pressure range. Usually measured in Pascals (Pa, N/m2).
;nominal cooling capacity: real. Nominal cooling capacity. Usually measured in Watts (W, J/s).
;nominal sorrounding temperature cooling: real. Nominal surrounding temperature (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
;nominal sorrounding humidity cooling: normalised ratio. Nominal surrounding humidity (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
;nominal supply water temperature cooling: real. Nominal supply water temperature (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
;nominal return water temperature cooling: real. Nominal return water temperature (refers to nominal cooling capacity). Usually measured in degrees Kelvin (K).
;nominal water flow cooling. real. Nominal water flow (refers to nominal cooling capacity). Usually measured in m3/s.
;nominal heating capacity: real. Nominal heating capacity. Usually measured in Watts (W, J/s).
;nominal sorrounding temperature heating: real. Nominal surrounding temperature (refers to nominal heating capacity). Usually measured in degrees Kelvin (K).
;nominal supply water temperature heating: real. Nominal supply water temperature (refers to nominal heating capacity). Usually measured in degrees Kelvin (K).
;nominal return water temperature heating: real. Nominal return water temperature (refers to nominal heating capacity). Usually measured in degrees Kelvin (K).
;nominal water flow heating: real. Nominal water flow (refers to nominal heating capacity). Usually measured in m3/s.
;integrated lighting type: {none, direct, indirect, direct and indirect, etc.}. Integrated lighting in cooled beam.
;pipe connection enum: {straight, right, left, top, etc.}. The manner in which the pipe connection is made to the cooled beam.
;finish color: string. Finish color for cooled beam.
;coil lenght: positive real. Length of coil. Usually measured in millimeters (mm).
;coil width: positive real. Width of coil. Usually measured in millimeters (mm";;;;;;;;;;;;;;;;;;
Which properties has a Outlet?;"- Is pluggable outlet: logical. 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).
;Number os sockets: integer. The number of sockets that may be connected. In case of inconsistency, sockets defined on ports take precedence.";;;;;;;;;;;;;;;;;;
Which properties has a Electric motor?;"- Maximum power output: real. The maximum output power rating of the engine. Usually measured in Watts (W, J/s).
;Electric motor efficiency: positive ratio. The ratio of output capacity to intake capacity.
;Start current factor: real. 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.
;Starting time: real. 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.
;Te time: real. 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.
;Locked rotor current. real. Input current when a motor armature is energized but not rotating. Usually measured in Ampere (A).
;Motor enclosure type: {open drip proof, totally enclosed air over, totally enclosed fan cooled, totally enclosed non ventilated, etc.} A list of the available types of motor enclosure from which that required may be selected.
;Frame size: string. 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.
;Is guarded: boolean. Indication of whether the motor enclosure is guarded (= TRUE) or not (= FALSE).
;Has part winding: boolean. Indication of whether the motor is single speed, i.e. has a single winding (= FALSE) or multi-speed i.e.has part winding (= TRUE) .";;;;;;;;;;;;;;;;;;
Which properties has a audio visual appliance?;"- Media source: Indicates media sources and corresponding names of ports (IfcDistributionPort with FlowDirection=SINK and PredefinedType=AUDIOVISUAL) or aggregated audio/video components (IfcAudioVisualAppliance).
;Audio volume: real. Indicates discrete audio volume levels and corresponding sound power offsets, if applicable. Missing values may be interpolated. Measured in watts.";;;;;;;;;;;;;;;;;;
Which properties has a Fan?;"- motor drive type: {direct drive, belt drive, coupling, etc.}. Motor drive type: DIRECTDRIVE: Direct drive. BELTDRIVE: Belt drive. COUPLING: Coupling. OTHER: Other type of motor drive. UNKNOWN: Unknown motor drive type. 
;capacity control type: {inlet vane, variable speed drive, blade pitch angle, two speed, discharge damper, etc.}. 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.
;operation temperature range: [real, real]. Allowable operation ambient air temperature range. Usually measured in degrees Kelvin (K).
;nominal air flow rate: real. Nominal air flow rate. Usually measured in m3/s.
;nominal total pressure: real. Nominal total pressure rise across the fan. Usually measured in Pascals (Pa, N/m2).
;nominal static pressure: real. 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).
;nominal rotation speed: real. Nominal fan wheel speed. Usually measured in cycles/s.
;nominal power rate: real. Nominal fan power rate.Usually measured in Watts (W, J/s).
;operational riterial: real. Time of operation at maximum operational ambient air temperature. Measured in seconds (s) or days (d) or other units of time.";;;;;;;;;;;;;;;;;;
Which properties has a Interceptor?;"- nominal body lenght: real. 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).
;nominal body width: real. 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 body depth: real. 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).
;inlet connection size: real. Size of the inlet connection. Usually measured in millimeters (mm).
;outlet connection size: real. Size of the outlet connection. Usually measured in millimeters (mm).
;cover lenght: real. 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).
;cover width: real. The length measured along the x-axis in the local coordinate system of the cover of the oil interceptor. Usually measured in millimeters (mm).
;ventilating pipe size: real. Size of the ventilating pipe(s). Usually measured in millimeters (mm).";;;;;;;;;;;;;;;;;;
Which properties has a Chiller?;"- nominal capacity: real. Nominal cooling capacity of chiller at standardized conditions as defined by the agency having jurisdiction. Usually measured in Watts (W, J/s).
;nominal efficiency:  positive ratio. Nominal chiller efficiency under nominal conditions. 
;nominal condensing temperature: real. Chiller condensing temperature. Usually measured in degrees Kelvin (K).
;nominal evaporating temmperature. real. Chiller evaporating temperature.Usually measured in degrees Kelvin (K).
;nominal heat rejection rate: real. Sum of the refrigeration effect and the heat equivalent of the power input to the compressor. Usually measured in Watts (W, J/s).
;nominal power consumption: real. Nominal total power consumption. Usually measured in Watts (W, J/s).";;;;;;;;;;;;;;;;;;
Which properties has a Cooling tower?;"- nominal capcity: real. Nominal cooling tower capacity in terms of heat transfer rate of the cooling tower between air stream and water stream at nominal conditions. Usually measured in Watts (W, J/s).
;circuit type: {open circuit, closed circuit wet, closed circuit dry, closed circuit dry wet, etc.}. 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.
;flow arrangement: {counter flow, cross flow, parallel flow, etc.} 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.
;spray type: {spray filled, splash type fill, film type fill, etc.} 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.
;capacity control: {fan cycling, two-spreed fan, variable speed fan, dampers control, bypass valve control, multiple series pumps, two-speed pump, variable speed pump, etc.}. 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.
;control strategy: {fixed existing water temp, wer bulb temp reset, etc.}. FixedExitingWaterTemp: The capacity is controlled to maintain a fixed exiting water temperature. WetBulbTempReset: The set-point is reset based on the wet-bulb temperature.
;number of cells: integer. Number of cells in one cooling tower unit.
;basin reserve volume: real. Volume between operating and overflow levels in cooling tower basin. Usually measured in cubic metre (m3).
;lift elevation difference:  real. Elevation difference between cooling tower sump and the top of the tower. Usually measured in millimeters (mm).
;water requirement: real. Make-up water requirements. Usually measured in m3/s.
;operation temperature range: real. Allowable operation ambient air temperature range. Usually measured in degrees Kelvin (K).
;ambient design dry bulb temperature: real. Ambient design dry bulb temperature used for selecting the cooling tower. Usually measured in degrees Kelvin (K).
;ambient design wet bulb temperature: real. Ambient design wet bulb temperature used for selecting the cooling tower. Usually measured in degrees Kelvin (K).";;;;;;;;;;;;;;;;;;
Which properties has a Electric flow storage device?;"- Nominal supply voltage: real. The nominal voltage of the supply. Usually measured in Volts (V, W/A).
;Nominal lsupply voltage offset: real interval. The maximum and minimum allowed voltage of the supply e.g. boundaries of 380V/440V may be applied for a nominal voltage of 400V.
;Nominal frequency. real. The nominal frequency of the supply. Usually measured in cycles/s or Hertz (Hz).";;;;;;;;;;;;;;;;;;
Which properties has a Switching device?;"- Number of gangs: integer. Number of gangs/buttons on this switch.
;Switch function: {on off switch, intermediate switch, double throw switch, etc.}. Indicates types of switches which differs in functionality.
;Has lock: boolean. Indication of whether a switching device has a key operated lock (=TRUE) or not (= FALSE).
;is illuminated: boolean. An indication of whether there is an illuminated indicator to show that the switch is on (=TRUE) or not (= FALSE).
;Legend: string. A text inscribed or applied to the switch as a legend to indicate purpose or function.
;Set point: . Indicates the setpoint and label. For toggle switches, there are two positions, 0 for off and 1 for on. For dimmer switches, the values may indicate the fully-off and full-on positions, where missing integer values in between are interpolated. For selector switches, the range indicates the available positions. An IfcTable may be attached (using IfcMetric and IfcPropertyConstraintRelationship) containing columns of the specified header names and types: 'Position' (IfcInteger): The discrete setpoint level. 'Sink' (IfcLabel): The Name of the switched input port (IfcDistributionPort with FlowDirection=SINK). 'Source' (IfcLabel): The Name of the switched output port (IfcDistributionPort with FlowDirection=SOURCE). 'Ratio' (IfcNormalizedRatioMeasure): The ratio of power at the setpoint where 0.0 is off and 1.0 is fully on.";;;;;;;;;;;;;;;;;;
Which properties has a Tube bundle?;"- number of rows: integer. Number of tube rows in the tube bundle assembly.
;staggered row spacing: real. Staggered tube row spacing. Usually measured in millimeters (mm).
;in line row spacing:r eal. In-line tube row spacing. Usually measured in millimeters (mm).
;number of circuits: integer. Number of parallel fluid tube circuits.
;fouling factor: real. Fouling factor of the tubes in the tube bundle. Usually measured in m2 Kelvin/Watt.
;thermal conductivity: real. Fouling factor of the tubes in the tube bundle. Usually measured in m2 Kelvin/Watt.
;lenght: real. Length of the tubes in the tube bundle. Usually measured in millimeters (mm).
;volumen: real. Total volume of fluid in the tubes and their headers. Usually measured in cubic metre (m3).
;nominal diameter: real. Nominal diameter or width of the tubes in the tube bundle. Usually measured in millimeters (mm).
;outside diameter: real. Actual outside diameter of the tube in the tube bundle. Usually measured in millimeters (mm).
;inside diameter: real. Actual inner diameter of the tube in the tube bundle. Usually measured in millimeters (mm).
;horizontal spacing: real. Horizontal spacing between tubes in the tube bundle. Usually measured in millimeters (mm).
;vertical spacing: real. Vertical spacing between tubes in the tube bundle.Usually measured in millimeters (mm).
;has turbulator: boolean. TRUE if the tube has a turbulator, FALSE if it does not.";;;;;;;;;;;;;;;;;;
Which properties has a Damper?;"- operation: {automatic, manual, etc.}. The operational mechanism for the damper operation.
;orientation: {vertical, horizontal, vertical or horizontal, etc.}. The intended orientation for the damper as specified by the manufacturer.
;blade thickness: real. The thickness of the damper blade. Usually measured in millimeters (mm).
;blade action: {folding curtain, parallel, opposed, single, etc.}. Blade action.
;blade shape: {flat, fabricated airfoil, extruded airfoil, etc.}. Blade shape. Flat means triple V-groove.
;blade edge: {crimped, uncrimped, etc.}. Blade edge.
;number of blades: integer. Number of blades.
;face area: real. Face area open to the airstream. Usually measured in square metre (m2).
;maximum air flow rate: real. Maximum allowable air flow rate. Usually measured in m3/s.
;temperature range: [real, real]. Temperature range. Usually measured in degrees Kelvin (K).
;maximum working pressure: real. Maximum working pressure. Usually measured in Pascals (Pa, N/m2).
;temperature rating: real. Temperature rating. Usually measured in degrees Kelvin (K).
;nominal air flow rate: real. Nominal air flow rate. Usually measured in m3/s.
;open pressure drop: real. Total pressure drop across damper. Usually measured in Pascals (Pa, N/m2).
;leakage fully closed: real. Leakage when fully closed. Usually measured in m3/s.
;frame type: string. The type of frame used by the damper (e.g., Standard, Single Flange, Single Reversed Flange, Double Flange, etc.).
;frame depth: real. The length (or depth) of the damper frame. Usually measured in millimeters (mm).
;frame thickness: real. The thickness of the damper frame material. Usually measured in millimeters (mm).
;close off rating: real. Close off rating. Usually measured in Pascals (Pa, N/m2).";;;;;;;;;;;;;;;;;;
Which properties has a Coil?;"- operational temperature range: [real, real]. Allowable operational air temperature range. Usually measured in degrees Kelvin (K).
;air flow rate range: [real, real]. Possible range of airflow that can be delivered. For cases where there is no airflow across the coil (e.g. electric coil in a floor slab), then the value is zero. Usually measured in m3/s.
;nominal sensible capacity: real. Nominal sensible capacity. Usually measured in Watts (W, J/s).
;nominal latent capacity: real. Nominal latent capacity. Usually measured in Watts (W, J/s).
;nominal UA: real. Nominal UA value.
;placement type: {floor, ceiling, unit, etc.} Indicates the placement of the coil. FLOOR indicates an under floor heater (if coil type is WATERHEATINGCOIL or ELECTRICHEATINGCOIL);CEILING indicates a cooling ceiling (if coil type is WATERCOOLINGCOIL);UNIT indicates that the coil is part of a cooling or heating unit, like cooled beam, etc.";;;;;;;;;;;;;;;;;;
Which properties has a Space heater?;"- placement type:{baseboard, towel warmer, suspended, wall, etc.}. Indicates how the space heater is designed to be placed. 
;temperature classification: {low temperature, high temperature, etc.}. 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.
;heat transfer dimension: {point, path, surface, etc.}. Indicates how heat is transmitted according to the shape of the space heater.
;heat transfer medium: {water, steam, etc.}. Enumeration defining the heat transfer medium if applicable.
;energy source: {coal, coal pulverized, elecricity, gas, oil, propaen, wood, wood chip, wood pellet, wood pulverized, etc.}. Enumeration defining the energy source or fuel combusted to generate heat if applicable. Note: hydronic heaters shall use UNSET;dual-use hydronic/electric heaters shall use ELECTRICITY.
;body mass: real. Overall body mass of the heater. Usually measured in kilograms (kg) or grams (g).
;thermal mass heat capacity: real. Product of component mass and specific heat.
;output capacity: real. Total nominal heat output as listed by the manufacturer. Usually measured in Watts (W, J/s).
;thermal efficiency: normalised ratio. Overall Thermal Efficiency is defined as gross energy output of the heat transfer device divided by the energy input.
;number of panels: integer. Number of panels.
;number of sections: integer. Number of vertical sections, measured in the direction of flow.";;;;;;;;;;;;;;;;;;
Which properties has a Compressor?;"- power source: {motor driven, engine driven, gas turbine, etc.} Type of power driving the compressor.
;refrigerant class: {CFC (Chlorofluorocarbons), HCFC (Hydrochlorofluorocarbons), HFC (Hydrofluorocarbons), hydrocarbons, ammonia, CO2, H2O, etc.}. Refrigerant class used by the compressor. CFC: Chlorofluorocarbons. HCFC: Hydrochlorofluorocarbons. HFC: Hydrofluorocarbons.
;minimun part load ratio: positive ratio. Minimum part load ratio as a fraction of nominal capacity.
;maximum part load ratio: positive ratio. Maximum part load ratio as a fraction of nominal capacity.
;compressor speed: real. Compressor speed. Usually measured in cycles/s.
;nominal capacity: real. Compressor nameplate capacity. Usually measured in Watts (W, J/s).
;ideal capacity: real. Compressor capacity under ideal conditions. Usually measured in Watts (W, J/s).
;ideal shaft power: real. Compressor shaft power under ideal conditions. Usually measured in Watts (W, J/s).
;has hot gas bypass: boolean. Whether or not hot gas bypass is provided for the compressor. TRUE = Yes, FALSE = No.
;impeller diameter: positive real. Diameter of compressor impeller - used to scale performance of geometrically similar compressors. Usually measured in millimeters (mm).";;;;;;;;;;;;;;;;;;
Which properties has a Boiler?;"- pressure rating: real. Nominal pressure rating of the boiler as rated by the agency having jurisdiction. Usually measured in Pascals (Pa, N/m2).
;operating mode: {fixed, two step modulating, etc.} Identifies the operating mode of the boiler.
;heat transfer surface area: real. Total heat transfer area of the vessel. Usually measured in square metre (m2).
;nominal part load ratio: [real, real]. Allowable part load ratio range.
;water inlet temperature range: [real, real]. Allowable water inlet temperature range. Usually measured in degrees Kelvin (K).
;water storage capacity: real. Water storage capacity. Usually measured in cubic metre (m3).
;is water storage heater: booelan. 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.
;outlet temperature range: [real, real]. Allowable outlet temperature of either the water or the steam. Usually measured in degrees Kelvin (K).
;nominal energy consumption: real. Nominal fuel consumption rate required to produce the total boiler heat output. Usually measured in Watts (W, J/s).
;energy source: {coal, coal pulverized, elecricity, gas, oil, propaen, wood, wood chip, wood pellet, wood pulverized, etc.}. Enumeration defining the energy source or fuel cumbusted to generate heat.";;;;;;;;;;;;;;;;;;
Which properties has a Transformer?;"- Primary voltage: real. 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).
;Secondary voltage: real. The voltage that has been transformed and is running out of the transformer on the secondary side. Usually measured in Volts (V, W/A).
;Primary current: real. The current that is going to be transformed and that runs into the transformer on the primary side. Usually measured in Ampere (A).
;Secondary current: real. The current that has been transformed and is running out of the transformer on the secondary side. Usually measured in Ampere (A).
;Primary frequency: real. 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).
;Secondary frequency: real. 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).
;Primary apparent power: real. 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).
;Secondary apparent power: real. 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).
;Maximum apparent power: real. Maximum apparent power/capacity in VA (volt ampere). Usually measured in Watts (W, J/s).
;Secondary current type: {AC, DC}. A list of the secondary current types that can result from transformer output.
;Short circuit voltage. complex number. A complex number that specifies the real and imaginary parts of the short-circuit voltage at rated current of a transformer given in %.
;Real impedance ratio: real ratio. 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.
;Imaginary impedance ratio: real ratio. 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.
;Transformer vector group: {Dd0, Dd6, Dy5, Dy11, Yd5, Yd11, Dz0, Dz6, Yy0, Yy6, Yz5, Yz11, etc.}. 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.
;Is neutral primary terminal available: boolean. An indication of whether the neutral point of the primary winding is available as a terminal (=TRUE) or not (= FALSE).
;Is neutral secondary terminal available: boolean. An indication of whether the neutral point of the secondary winding is available as a terminal (=TRUE) or not (= FALSE).";;;;;;;;;;;;;;;;;;
Which properties has a Flow meter?;"- read out type: {dial, digital, etc.}. 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.
;remote reading: booelan. Indicates whether the meter has a connection for remote reading through connection of a communication device (set TRUE) or not (set FALSE).";;;;;;;;;;;;;;;;;;
Which properties has a Condenser?;"- refrigerant class: {CFC (Chlorofluorocarbons), HCFC (Hydrochlorofluorocarbons), HFC (Hydrofluorocarbons), hydrocarbons, ammonia, CO2, H2O, etc.}. Refrigerant class used by the condenser. CFC: Chlorofluorocarbons. HCFC: Hydrochlorofluorocarbons. HFC: Hydrofluorocarbons.
;external surface area: real. External surface area (both primary and secondary area). Usually measured in square metre (m2).
;internal surface area: real. Internal surface area. Usually measured in square metre (m2).
;internal refrigerant volume: real. Internal volume of condenser (refrigerant side). Usually measured in cubic metre (m3).
;internal water volume: real. Internal volume of condenser (water side). Usually measured in cubic metre (m3).
;nominal heat transfer area: real. Nominal heat transfer surface area associated with nominal overall heat transfer coefficient. Usually measured in square metre (m2).
;nominal heat transfer coefficient: real. Nominal overall heat transfer coefficient associated with nominal heat transfer area. Usually measured in Watts/m2 Kelvin.";;;;;;;;;;;;;;;;;;
Which properties has a shading device?;"- Shading device type: {fixed, movable, overhang, sidefin, etc.]. Specifies the type of shading device.
;Is external: boolean. 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.
;Mechanical operated: boolean. Indication whether the element is operated machanically (TRUE) or not, i.e. manually (FALSE).
;Thermal transmittance: real. IfcThermalTransmittanceMeasure is a measure of the rate at which energy is transmitted through a body. Usually measured in Watts/m2 Kelvin.
;Solar transmittance: positive ratio. (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
;Visible light transmittance: positive ratio. Fraction of the visible light that passes the shading system at normal incidence. It is a value without unit.
;Solar reflectance: positive ratio. (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
;Visible light reflectance: positive ratio. Fraction of the visible light that is reflected by the glazing at normal incidence. It is a value without unit.
;Roughness: string. A measure of the vertical deviations of the surface.";;;;;;;;;;;;;;;;;;
Which properties has a protective device tripping unit?;"- Standard: string. The designation of the standard applicable for the definition of the characteristics of the tripping_unit.
;Limiting terminal size: real. The maximum terminal size capacity of the device. Usually measured in square metre (m2).";;;;;;;;;;;;;;;;;;
Which properties has a Valve?;"- valve pattern: {single port, angled 2 port, straight 2 port, straight 3 port, crossover 4 port, etc.}. 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.
;valve operation: {drop weight, float, hydraulic, lever, lock shield, motorized, pneumatic, solenoid, spring, thermostatic, wheel, etc.}. 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.
;valve mechanism: {ball, butterfly, configured gate, gland, globe, lubricated plug, needle, parallel slide, plug, wedge gate, etc.}. 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.
;size: real. The size of the connection to the valve (or to each connection for faucets, mixing valves, etc.). Usually measured in millimeters (mm).
;test pressure: real. The maximum pressure to which the valve has been subjected under test. Usually measured in Pascals (Pa, N/m2).
;working pressure: real. The normally expected maximum working pressure of the valve. Usually measured in Pascals (Pa, N/m2).
;flow coefficient: real. 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.
;close off rating: real. Close off rating. Usually measured in Pascals (Pa, N/m2).";;;;;;;;;;;;;;;;;;
Which properties has a Vibration isolator?;"- vibration transmissibility: positive ratio. The vibration transmissibility percentage.
;isolator static deflection: real. Static deflection of the vibration isolator. Usually measured in millimeters (mm).
;isolator compressibility: real ratio. The compressibility of the vibration isolator.
;height: real. Height of the vibration isolator before tha application of load. Usually measured in millimeters (mm).
;maximum supported weight: real. The maximum weight that can be carried by the vibration isolator. Usually measured in kilograms (kg) or grams (g).";;;;;;;;;;;;;;;;;;
Which properties has a Filter?;"- weight: real. Weight of filter. Usually measured in kilograms (kg) or grams (g).
;initial resistance: real. 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).
;final resistance: real. 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).
;operation temperature range: [real, real]. Allowable operation ambient fluid temperature range. Usually measured in degrees Kelvin (K).
;flow rate range: [real, real]. Possible range of fluid flowrate that can be delivered. Usually measured in m3/s.
;nominal filter face velocity: real. Filter face velocity. Usually measured in m/s.
;nominal media surface velocity: real. Average fluid velocity at the media surface. Usually measured in m/s.
;nominal pressure drop: real. Total pressure drop across the filter. Usually measured in Pascals (Pa, N/m2).
;nominal flow rate: real. Nominal fluid flow rate through the filter. Usually measured in m3/s.
;nominal particle geometric mean diameter: real. Particle geometric mean diameter associated with nominal efficiency. Usually measured in millimeters (mm).
;nominal particle geometric standard deviation: real. Particle geometric standard deviation associated with nominal efficiency. ";;;;;;;;;;;;;;;;;;