Class: BTAP::EQuest::DOEConstruction

Inherits:

DOECommand

• Object
• DOECommand
• BTAP::EQuest::DOEConstruction

Defined in:

lib/openstudio-standards/btap/equest.rb

Instance Attribute Summary

Attributes inherited from DOECommand

#building, #children, #commandName, #commandType, #comments, #exempt, #keywordPairs, #non_utype_commands, #one_line_commands, #parents, #utype, #uvalue

Instance Method Summary

• #get_materials ⇒ Object
• #get_u_value ⇒ Object

  This method finds the u-value of the given construction Output => total conductivity as a float.

• #initialize ⇒ DOEConstruction constructor

  A new instance of DOEConstruction.

Methods inherited from DOECommand

#basic_output, #check_keyword?, #depth, #doe_scope, #get_children, #get_children_of_command, #get_command_from_string, #get_keyword_value, #get_name, #get_parent, #get_parents, #name, #output, #remove, #remove_keyword_pair, #set_keyword_value, #set_parent

Constructor Details

#initialize ⇒ DOEConstruction

Returns a new instance of DOEConstruction.

# File 'lib/openstudio-standards/btap/equest.rb', line 1856

def initialize
  super()
end

Instance Method Details

#get_materials ⇒ Object

# File 'lib/openstudio-standards/btap/equest.rb', line 1860

def get_materials()
  bdllib = DOE2::DOEBDLlib.instance
  materials = Array.new

  case self.get_keyword_value("TYPE")
  when "LAYERS"
    # finds the command associated with the layers keyword
    layers_command = building.find_command_with_utype( self.get_keyword_value("LAYERS") )

    #if Layres command cannot be found in the inp file... find it in the bdl database.
    layers_command = bdllib.find_layer(self.get_keyword_value("LAYERS")) unless layers_command.length == 1

    # if there ends up to be more than one command with the layers keyword
    # raise an exception
    raise "Layers was defined more than once " + self.get_keyword_value("LAYERS").to_s if layers_command.length > 1

    # get all the materials, separate it by the quotation marks and push it
    # onto the materials array
    layers_command[0].get_keyword_value("MATERIAL").scan(/(\".*?\")/).each do |material|
      material_command = ""

      #Try to find material in doe model.
      material_command_array = building.find_command_with_utype(material.to_s.strip)

      # if there ends up to be more than one, raise an exception
      raise "Material was defined more than once #{material}" if material_command_array.length > 1

      # if the material cannot be found within the model, find it within the doe2 database
      material_command = bdllib.find_material(material) if material_command_array.length < 1

      #If material was found then set it.
      material_command = material_command_array[0] if material_command_array.length == 1

      materials.push(material_command)
    end
    return materials
  when "U-VALUE"
    return nil
  end
end

#get_u_value ⇒ Object

This method finds the u-value of the given construction Output => total conductivity as a float

# File 'lib/openstudio-standards/btap/equest.rb', line 1903

def get_u_value()
  total_conductivity = 0.0
  case self.get_keyword_value("TYPE")
  when "LAYERS"
    self.get_materials().each do |material_command|
      case material_command.get_keyword_value("TYPE")
      when  "RESISTANCE"
        conductivity = 1 / material_command.get_keyword_value("RESISTANCE").to_f
      when "PROPERTIES"
        conductivity = material_command.get_keyword_value("CONDUCTIVITY").to_f
      else
        raise "Error in material properties"
      end
      total_conductivity = total_conductivity + conductivity
    end
    return total_conductivity
  when "U-VALUE"
    return self.get_keyword_value("U-VALUE").to_f
  end
end