Thank you, @MingboPeng, I really appreciate it.
I made a few fixes/revisions to my file, the updated version is found below. Unfortunately, I still am stuck on the ‘NoneType’ error so any suggestions would be helpful.
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Two additional questions about modeling GSHP systems in Ironbug:
1 - A question about G Function data:
I also wonder if anyone has experience they could share regarding exporting the required G-Function data from Trane to the format that is needed for use in Ironbug ground heat exchangers. I asked an MEP I am working with if they could provide the G-Function data that is calculated in Trane (based on our specific system parameters) in order to input into Ironbug. However, they are not sure where to start finding that data in Trane and exporting it into the correct format. Any tips for collecting G-Function data from Trane or other HVAC load sizing programs? Is there any way around providing G-Function data that still allows GSHP systems to be run (like an auto-size capability)?
2 - A simpler way to model GSHP systems for early design process?
I’ve noticed when opening the LBT template ‘GSHP w/DOAS’ system in OpenStudio that the Ground Heat Exchanger is modeled as a custom component that looks like it is simply a ground temperature supply loop, simplifying and eliminating the need for detailed GSHP sizing inputs. I would like to take advantage of the customization options of GSHP feeding into various systems (beyond the current LBT templates) in Ironbug but frequently am getting stuck on the sizing (getting errors indicating runaway plant temperatures - either too hot or too cold and being unable to run the model). Is there a similar Ironbug shortcut for modeling GSHP’s as simply a constant supply temperature which could reasonably simulate the efficiency of a ground heat exchanger without the detailed sizing data and consequent errors?
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Updated file:
GSHP to Radiant wDOAS_LBTForum_v2.gh (310.0 KB)
Relink to the Rhino file: