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  <IfcVersion version="IFC4X4" />
  <Name>Pset_MaterialEnergy</Name>
  <Definition>A set of extended material properties for energy calculation purposes.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcMaterial</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcMaterial</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="1229a900d1ed11e1800000215ad4efdf">
      <Name>ViscosityTemperatureDerivative</Name>
      <Definition>Viscosity temperature derivative.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcReal" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Viscosity Temperature Derivative</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="181f8a00d1ed11e1800000215ad4efdf">
      <Name>MoistureCapacityThermalGradient</Name>
      <Definition>Thermal gradient coefficient for moisture capacity. Based on water vapor density.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcReal" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Moisture Capacity Thermal Gradient</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="1e156b00d1ed11e1800000215ad4efdf">
      <Name>ThermalConductivityTemperatureDerivative</Name>
      <Definition>Thermal conductivity temperature derivative.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcReal" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Thermal Conductivity Temperature Derivative</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="22da1f00d1ed11e1800000215ad4efdf">
      <Name>SpecificHeatTemperatureDerivative</Name>
      <Definition>Specific heat temperature derivative.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcReal" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Specific Heat Temperature Derivative</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="28d00000d1ed11e1800000215ad4efdf">
      <Name>VisibleRefractionIndex</Name>
      <Definition>Index of refraction (visible) defines the "bending" of the sola! r ray in the visible spectrum when it passes from one medium into another.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcReal" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Visible Refraction Index</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="2f5e7780d1ed11e1800000215ad4efdf">
      <Name>SolarRefractionIndex</Name>
      <Definition>Index of refraction (solar) defines the "bending" of the solar ray when it passes from one medium into another.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcReal" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Solar Refraction Index</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="34bbc200d1ed11e1800000215ad4efdf">
      <Name>GasPressure</Name>
      <Definition>Fill pressure (e.g. for between-pane gas fills): the pressure exerted by a mass of gas confined in a constant volume.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Gas Pressure</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases>
    <PsetDefinitionAlias lang="en" />
  </PsetDefinitionAliases>
</PropertySetDef>