Hey @deepthi.ravi ,
You have brought up the only energy simulation Legacy component for which we don’t have an equivalent LBT workflow beyond “use additional IDF strings”, “write your own measure” or “post-process the OSM exported from Honeybee using the OpenStudio SDK inside a Python component like the sample you see here”.
I was wondering if anyone was going to bring this up just because, these days, most situations where people would go through the effort of digging out a trench for an earth tube or thermal labyrinth, they would sooner use that excavation effort to put in a ground source heat pump. You just tend to get a lot more control over the thermal conditions this way and you can better take advantage of the heat capacity of the earth by circulating water instead of air. The LBT plugin has some pretty good support for GSHP systems through the HVAC templates and all of the customization you can do in Ironbug (as I’m sure you’ll see on the forum here if you search for it).
But, if I can’t win you over to the side of suggesting GSHPs over earth tubes and you tell me that you would use an earth tube component if we were to add it to LBT, then I’ll put it on our development agenda. If other people confirm that they want it, then I’ll bump up the priority of it.
And, if you tell me this is the one thing that is stopping you from upgrading from Legacy, then I’ll see if I can hack together a component for you that generates some “additional IDF strings” so that you can use it with your LBT workflows.