Module: BTAP::Resources::Envelope::Materials

Defined in:
lib/openstudio-standards/btap/envelope.rb

Overview

This module contains Materials, Constructions and ConstructionSets

Defined Under Namespace

Modules: Fenestration, Opaque

Class Method Summary collapse

Class Method Details

.get_conductance(material, temperature_c = 0.0) ⇒ Float

This method gets conductance.

Parameters:

  • material (OpenStudio::Model::StandardOpaqueMaterial)
  • temperature_c (Float) (defaults to: 0.0)

Returns:

  • (Float) —

    conductance

Author:



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# File 'lib/openstudio-standards/btap/envelope.rb', line 126

def self.get_conductance(material, temperature_c = 0.0)
  conductance = nil
  #this method is a wrapper around OS functions. No testing is required.
  #Convert C to K
  temperature_k = temperature_c + 273.0
  conductance = material.to_SimpleGlazing.get.uFactor unless material.to_SimpleGlazing.empty?
  conductance = material.to_StandardGlazing.get.thermalConductance unless material.to_StandardGlazing.empty?
  conductance = material.to_OpaqueMaterial.get.thermalConductance unless material.to_OpaqueMaterial.empty?
  conductance = material.to_Shade.get.thermalConductance unless material.to_Shade.empty?
  conductance = material.to_Screen.get.thermalConductance unless material.to_Screen.empty?
  conductance = material.to_MasslessOpaqueMaterial.get.thermalConductance unless material.to_MasslessOpaqueMaterial.empty?
  conductance = 1.0 / material.to_AirGap.get.thermalResistance unless material.to_AirGap.empty?
  conductance = material.to_Gas.get.getThermalConductivity(temperature_k) unless material.to_Gas.empty?
  conductance = material.to_GasMixture.get.getThermalConductance(temperature_k) unless material.to_GasMixture.empty?
  conductance = material.to_RoofVegetation.get.thermalConductance unless material.to_RoofVegetation.empty?
  conductance = material.to_RefractionExtinctionGlazing.get.thermalConductance unless material.to_RefractionExtinctionGlazing.empty?
  conductance = 9999.9 unless material.to_Blind.empty?
  raise ("Conductance for Material: #{material.name} could not be set.") if conductance == nil
  return conductance
end