Class: CoilHeatingWaterPercentChange

Inherits:
OpenStudio::Measure::ModelMeasure
  • Object
show all
Defined in:
lib/measures/CoilHeatingWaterPercentChange/measure.rb

Overview

start the measure

Instance Method Summary collapse

Instance Method Details

#arguments(model) ⇒ Object

define the arguments that the user will input



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# File 'lib/measures/CoilHeatingWaterPercentChange/measure.rb', line 33

def arguments(model)
  args = OpenStudio::Measure::OSArgumentVector.new

  # populate choice argument for constructions that are applied to surfaces in the model
  loop_handles = OpenStudio::StringVector.new
  loop_display_names = OpenStudio::StringVector.new

  # putting air loops and names into hash
  loop_args = model.getAirLoopHVACs
  loop_args_hash = {}
  loop_args.each do |loop_arg|
    loop_args_hash[loop_arg.name.to_s] = loop_arg
  end

  # looping through sorted hash of air loops
  loop_args_hash.sort.map do |_key, value|
    show_loop = false
    components = value.supplyComponents
    components.each do |component|
      next if component.to_CoilHeatingWater.empty?

      show_loop = true
      loop_handles << component.handle.to_s
      loop_display_names << component.name.to_s
    end

    # if loop as object of correct type then add to hash.
    # if show_loop == true
    # loop_handles << value.handle.to_s
    # loop_display_names << key
    # end
  end

  # add building to string vector with space type
  building = model.getBuilding
  loop_handles << building.handle.to_s
  loop_display_names << '*All Water Heating Coils*'
  loop_handles << '0'
  loop_display_names << '*None*'

  # make a choice argument for space type
  coil_arg = OpenStudio::Measure::OSArgument.makeChoiceArgument('coil', loop_handles, loop_display_names)
  coil_arg.setDisplayName('Apply the Measure to a SINGLE Water Heating Coil, ALL the Water Heating Coils or NONE.')
  coil_arg.setDefaultValue('*All Water Heating Coils*') # if no space type is chosen this will run on the entire building
  args << coil_arg

  # ua_factor
  ua_factor = OpenStudio::Measure::OSArgument.makeDoubleArgument('ua_factor', true)
  ua_factor.setDisplayName('Percent Change for UA coefficient.')
  ua_factor.setDescription('Percent Change for UA coefficient.')
  ua_factor.setDefaultValue(0.0)
  args << ua_factor

  # coil_capacity_perc_change
  coil_capacity_perc_change = OpenStudio::Measure::OSArgument.makeDoubleArgument('coil_capacity_perc_change', true)
  coil_capacity_perc_change.setDisplayName('Percent Change for coil Capacity.')
  coil_capacity_perc_change.setDescription('Percent Change for coil Capacity.')
  coil_capacity_perc_change.setDefaultValue(0.0)
  args << coil_capacity_perc_change

  args
end

#change_name(object, ua_factor, coil_capacity_perc_change) ⇒ Object 



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# File 'lib/measures/CoilHeatingWaterPercentChange/measure.rb', line 23

def change_name(object, ua_factor, coil_capacity_perc_change)
  nameString = object.name.get.to_s
  nameString += " #{ua_factor.round(2)}percng UA" if ua_factor != 1.0
  if coil_capacity_perc_change != 1.0
    nameString += " #{coil_capacity_perc_change.round(2)}percng coilCap"
  end
  object.setName(nameString)
end

#description ⇒ Object

human readable description



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# File 'lib/measures/CoilHeatingWaterPercentChange/measure.rb', line 14

def description
  'This is a general purpose measure to calibrate Water Heating Coils with a Percent Change.'
end

#modeler_description ⇒ Object

human readable description of modeling approach



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# File 'lib/measures/CoilHeatingWaterPercentChange/measure.rb', line 19

def modeler_description
  'It will be used for calibration of rated capacity and efficiency and parasitic loads. User can choose between a SINGLE coil or ALL the Coils.'
end

#name ⇒ Object

human readable name



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# File 'lib/measures/CoilHeatingWaterPercentChange/measure.rb', line 9

def name
  'Heating Coils Water Percent Change'
end

#run(model, runner, user_arguments) ⇒ Object

define what happens when the measure is run



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# File 'lib/measures/CoilHeatingWaterPercentChange/measure.rb', line 97

def run(model, runner, user_arguments)
  super(model, runner, user_arguments)

  # use the built-in error checking
  unless runner.validateUserArguments(arguments(model), user_arguments)
    return false
  end

  # assign the user inputs to variables
  coil_object = runner.getOptionalWorkspaceObjectChoiceValue('coil', user_arguments, model)
  coil_handle = runner.getStringArgumentValue('coil', user_arguments)

  coil_capacity_perc_change = runner.getDoubleArgumentValue('coil_capacity_perc_change', user_arguments)
  ua_factor = runner.getDoubleArgumentValue('ua_factor', user_arguments)

  # find objects to change
  coils = []
  building = model.getBuilding
  building_handle = building.handle.to_s
  runner.registerInfo("coil_handle: #{coil_handle}")
  # setup coils
  if coil_handle == building_handle
    # Use ALL coils
    runner.registerInfo('Applying change to ALL Coils')
    loops = model.getAirLoopHVACs
    # loop through air loops
    loops.each do |loop|
      supply_components = loop.supplyComponents
      # find coils on loops
      supply_components.each do |supply_component|
        unless supply_component.to_CoilHeatingWater.empty?
          coils << supply_component.to_CoilHeatingWater.get
        end
      end
    end
  elsif coil_handle == 0.to_s
    # coils set to NONE so do nothing
    runner.registerInfo('Applying change to NONE Coils')
  elsif !coil_handle.empty?
    # Single coil handle found, check if object is good
    if !coil_object.get.to_CoilHeatingWater.empty?
      runner.registerInfo("Applying change to #{coil_object.get.name} coil")
      coils << coil_object.get.to_CoilHeatingWater.get
    else
      runner.registerError("coil with handle #{coil_handle} could not be found.")
    end
  else
    runner.registerError('coil handle is empty.')
    return false
  end

  # report initial condition of model
  runner.registerInitialCondition("Coils to change: #{coils.size}")
  runner.registerInfo("Coils to change: #{coils.size}")
  altered_coils = []
  altered_capacity = []
  altered_coilefficiency = []
  # loop through coils
  coils.each do |coil|
    altered_coil = false
    # coil_capacity_perc_change
    if coil_capacity_perc_change != 0.0 && coil.ratedCapacity.is_initialized
      runner.registerInfo("Applying ratedCapacity #{coil_capacity_perc_change} Percent Change to #{coil.name.get}.")
      coil.setRatedCapacity(coil.ratedCapacity.get + coil.ratedCapacity.get * coil_capacity_perc_change * 0.01)
      altered_capacity << coil.handle.to_s
      altered_coil = true
    end

    # modify ua_factor
    if ua_factor != 0.0 && coil.uFactorTimesAreaValue.is_initialized
      runner.registerInfo("Applying uFactorTimesAreaValue #{ua_factor} Percent Change to #{coil.name.get}.")
      coil.setUFactorTimesAreaValue(coil.uFactorTimesAreaValue.get + coil.uFactorTimesAreaValue.get * ua_factor * 0.01)
      altered_coilefficiency << coil.handle.to_s
      altered_coil = true
    end

    next unless altered_coil

    altered_coils << coil.handle.to_s
    change_name(coil, ua_factor, coil_capacity_perc_change)
    runner.registerInfo("coil name changed to: #{coil.name.get}")
  end

  # na if nothing in model to look at
  if altered_coils.empty?
    runner.registerAsNotApplicable('No Coils were altered in the model')
    return true
  end

  # report final condition of model
  runner.registerFinalCondition("#{altered_coils.size} Coils objects were altered.")

  true
end