<?xml version="1.0"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="d85ba100d1f211e1800000215ad4efdf" templatetype="PSET_PERFORMANCEDRIVEN" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4" />
  <Name>Pset_PipeFittingPHistory</Name>
  <Definition>Pipe fitting performance history common attributes.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcPipeFitting</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcPipeFitting</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="de518200d1f211e1800000215ad4efdf">
      <Name>LossCoefficient</Name>
      <Definition>Dimensionless loss coefficient used for calculating fluid resistance representing the ratio of total pressure loss to velocity pressure at a referenced cross-section.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Loss Coefficient</NameAlias>
        <NameAlias lang="ja-JP">損失係数</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">無次元数的な損失係数で、ある断面において、動圧に対する全圧損失の割合を表す流れ抵抗を計算するのに使われる。</DefinitionAlias>
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="e14c7280d1f211e1800000215ad4efdf">
      <Name>FlowrateLeakage</Name>
      <Definition>Leakage flowrate versus pressure difference.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Flowrate Leakage</NameAlias>
        <NameAlias lang="ja-JP">漏洩流量</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
        <DefinitionAlias lang="ja-JP">漏洩量と圧力差の関係</DefinitionAlias>
      </DefinitionAliases>
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases>
    <PsetDefinitionAlias lang="en" />
  </PsetDefinitionAliases>
</PropertySetDef>