DX Cooling coil lower cutoff temperature

[kbenne]

Add function for DX Cooling coil (CoilCoolingDXSingleSpeed or other DX cooling coils) to set the lower cutoff temperature, EnergyPlus has this field, but OpenStudio does not have a method to access and change this field.

@joseph-robertson and @jmarrec this is high priority. I'm not sure which of you is more loaded, but can one of you pick this up and remove the other assignee?

[jmarrec]

I'm on it. Do you have a reference of all objects that are missing it or do I need to dig it up? @kbenne

[jmarrec]

List of objects missing the field:

not_found_field
=> ["OS:Coil:Cooling:DX:SingleSpeed", "OS:Coil:Cooling:DX:TwoSpeed", "OS:Coil:Cooling:DX:MultiSpeed", "OS:Coil:Cooling:DX:VariableSpeed", "OS:Coil:Cooling:DX:TwoStageWithHumidityControlMode"]

---

Here's a script I used to find the objects that are missing it:

require 'openstudio'

field_name = "Minimum Outdoor Dry-Bulb Temperature for Compressor Operation"


puts "Parsing ProposedEnergy+.idd"
puts "=========================================================================="
ep_factory = OpenStudio::IddFileAndFactoryWrapper.new("EnergyPlus".to_IddFileType)

ep_objs = []
ep_factory.objects.each do |obj|
  obj.numFields.times do |i|
    if obj.getField(i).get.name == field_name
      puts "#{obj.name} - Found at #{i}"
      ep_objs << obj.name
    end
  end
end


puts "\n"
puts "Looking up the objects in the OpenStudio.idd to see if they have the field"
puts "=========================================================================="
os_factory = OpenStudio::IddFileAndFactoryWrapper.new("OpenStudio".to_IddFileType)

not_found_obj = []
not_found_field = []
found_field = []
ep_objs.each do |ep_obj_name|
  os_obj_name = "OS:#{ep_obj_name}"
  os_obj = os_factory.getObject(os_obj_name)
  if os_obj.empty?
    puts "Couldn't find #{ep_obj_name} in the IDD"
    not_found_obj << ep_obj_name
    next
  end

  os_obj = os_obj.get
  is_found = false
  os_obj.numFields.times do |i|
    if os_obj.getField(i).get.name == field_name
      puts "#{os_obj.name} - Found at #{i}"
      is_found = true
      break
    end
  end
  if !is_found
    puts "Found object #{os_obj_name} but doesn't have the field"
    not_found_field << os_obj_name
  else
    found_field << os_obj_name
  end
end

Parsing ProposedEnergy+.idd
==========================================================================
Coil:Cooling:DX:CurveFit:Performance - Found at 2
Coil:Cooling:DX:SingleSpeed - Found at 14
Coil:Cooling:DX:TwoSpeed - Found at 22
Coil:Cooling:DX:MultiSpeed - Found at 6
Coil:Cooling:DX:VariableSpeed - Found at 15
Coil:Cooling:DX:TwoStageWithHumidityControlMode - Found at 18
Coil:Heating:DX:SingleSpeed - Found at 14
Coil:Heating:DX:MultiSpeed - Found at 4
Coil:Heating:DX:VariableSpeed - Found at 9
AirLoopHVAC:UnitaryHeatPump:AirToAir:MultiSpeed - Found at 11

Looking up the objects in the OpenStudio.idd to see if they have the field
==========================================================================
Couldn't find Coil:Cooling:DX:CurveFit:Performance in the IDD
Found object OS:Coil:Cooling:DX:SingleSpeed but doesn't have the field
Found object OS:Coil:Cooling:DX:TwoSpeed but doesn't have the field
Found object OS:Coil:Cooling:DX:MultiSpeed but doesn't have the field
Found object OS:Coil:Cooling:DX:VariableSpeed but doesn't have the field
Found object OS:Coil:Cooling:DX:TwoStageWithHumidityControlMode but doesn't have the field
OS:Coil:Heating:DX:SingleSpeed - Found at 15
OS:Coil:Heating:DX:MultiSpeed - Found at 5
OS:Coil:Heating:DX:VariableSpeed - Found at 9
OS:AirLoopHVAC:UnitaryHeatPump:AirToAir:MultiSpeed - Found at 10