I attempt to answer my own question. As usual it leads to more problem. In a nutshell, I am trying to define a dual-duct HVAC system in OpenStudio. As one answer suggested, it can be done as EnergyPlus Measure.
So I went down this road. My plan of attack is:
- Create a model in OpenStudio without any HVAC system
- Execute an EnergyPlus Measure to add HVACTemplate objects for dual-duct system
I managed to get all the zones attached to the HVACTemplate:Zone:DualDuct objects. But the problem is: I cannot create the system objects. Ideally, I want to have one AHU per floor.
So the question is: can I get to the OpenStudio "model" objects in EnergyPlus measure? What I imagine is to create one dual-duct system per building story, and then attach zones in that building story to the system. This requires access to "model" objects.
What I have tried is something like this:
# GET the building story
model.getBuildingStorys.sort.each do |building_story|
#IDF object text for Dual Duct
string_objects << "
HVACTemplate:System:DualDuct,
#{building_story}, !- zone name
FanAvailSched, !- System Availability Schedule Name
DualFanConstantVolume, !- System Configuration Type
!!!!!!! CUT short for brevity
InletVaneDampers; !- Return Fan Part-Load Power Coefficients
"
end
#add all of the strings to workspace to create IDF objects
string_objects.each do |string_object|
idfObject = OpenStudio::IdfObject::load(string_object)
object = idfObject.get
wsObject = workspace.addObject(object)
end
Well, the above snippets failed.
So, how can I access "model" objects from an EnergyPlus measure?
