Pset_CoolingTowerTypeCommon |
Definition from IAI: Cooling tower type common attributes.
WaterRequirement attribute unit type modified in IFC2x2 Pset Addendum. |
Property Name (mandatory) |
Property Description and Allowed Values |
Property Value |
Reference |
Reference ID for this specified type in this project (e.g. type A-1 ), provided, if there is no classification reference to a recognized classification system used. |
|
n/a |
NominalCapacity |
Nominal cooling tower capacity in terms of heat transfer rate of the cooling tower between air stream and water stream at nominal conditions. |
|
0. |
CircuitType |
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. |
opencircuit |
closedcircuitwet |
closedcircuitdry |
closedcircuitdrywet |
other |
notknown |
unset |
|
unset |
FlowArrangement |
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. |
counterflow |
crossflow |
parallelflow |
other |
notknown |
unset |
|
unset |
SprayType |
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. |
sprayfilled |
splashtypefill |
filmtypefill |
other |
notknown |
unset |
|
unset |
CapacityControl |
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. |
fancycling |
twospeedfan |
variablespeedfan |
damperscontrol |
bypassvalvecontrol |
multipleseriespumps |
twospeedpump |
variablespeedpump |
other |
notknown |
unset |
|
unset |
ControlStrategy |
FixedExitingWaterTemp: The capacity is controlled to maintain a fixed exiting water temperature.
WetBulbTempReset: The set-point is reset based on the wet-bulb temperature. |
fixedexitingwatertemp |
wetbulbtempreset |
other |
notknown |
unset |
|
unset |
NumberOfCells |
Number of cells in one cooling tower unit. |
|
0 |
BasinReserveVolume |
Volume between operating and overflow levels in cooling tower basin. |
|
0. |
LiftElevationDifference |
Elevation difference between cooling tower sump and the top of the tower. |
|
0. |
WaterRequirement |
Make-up water requirements. |
|
0. |
OperationTemperatureRange |
Allowable operation ambient air temperature range. |
|
0. |
AmbientDesignDryBulbTemperature |
Ambient design dry bulb temperature used for selecting the cooling tower. |
|
0. |
AmbientDesignWetBulbTemperature |
Ambient design wet bulb temperature used for selecting the cooling tower. |
|
0. |
NBL_Specification_UK |
Properties for UK Specification |
Property Name (mandatory) |
Property Description and Allowed Values |
Property Value |
AccessibilityPerformance |
Accessibility issue(s) which the product satisfies. |
|
NotDefined |
CodePerformance |
Code Compliance requirement(s) which the product satisfies |
|
NotDefined |
Color |
Characteristic or primary color of product. |
|
NotDefined |
Constituents |
Optional constituent features, parts or finishes. |
|
NotDefined |
Documentation |
Location (Uniform Resource Information) for further product information |
|
http://www.buildingSMART.org.uk/CoolingTower_NOTDEFINED_UK.pdf |
DocumentReference |
Location (Uniform Resource Information) for the source or updates to this product information |
|
http://www.buildingSMART.org.uk/CoolingTower_NOTDEFINED_UK.ifcxml |
Features |
Features or other important characteristics relevant to product specification. |
|
NotDefined |
Finish |
Characteristic or primary finish of product. |
|
NotDefined |
Grade |
Standard grading(s) to which the product corresponds |
|
NotDefined |
NominalHeight |
Nominal height of product, typically the vertical or secondary characteristic dimension. |
|
100. |
NominalLength |
Nominal length of product, typically the larger or primary horizontal dimension. |
|
300. |
Material |
Characteristic or primary material of product. |
|
NotDefined |
ReferenceStandard |
Reference standard(s) to which the product is compliant. |
|
NotDefined |
Shape |
Characteristic shape of product. |
|
NotDefined |
Size |
Characteristic size of product. |
|
NotDefined |
NominalWidth |
Nominal width of product, typically the characteristic or secondary horizontal or characteristic dimension. |
|
200. |
SustainabilityPerformance |
Sustainability issue(s) which the product satisfies |
|
NotDefined |