How can I model a ground-to-air heat exchanger ventilation system (Canadian well / earth tube) in OpenStudio, and what loop or configuration do I need to connect it properly to my building's ventilation system?
I suggest you first familiarize yourself with the EnergyPlus class ZoneEarthtube (see here & here).
How to get there using OpenStudio is another question. You'll come up with a few interesting UMH posts if you search for either "earth tube" or "ZoneEarthtube", including this one (which deals a bit more on OpenStudio, EnergyPlus measures, etc.).
thank you so much I really appreciate the response, the simulation went well I've just another is there any chances to visualise some of the output variables shown after the idf file in the link u gave me using Dview in openstudio should I just create another idf for this or is there a method to do it, thanks in advance
I suspect you recovered the OpenStudio-generated IDF and added the ZoneEarthtube parameters by hand? And you seem successful in running simulations? If so, go over the generated eplusout.rdd file: it will hold all admissible output variables, specific to your IDF. Search for those listed here. Pick the ones you're interested in, and manually add them to your IDF (usually a copy/paste from the .rdd file). Re-run the simulation - they should be reported in the eplusout.eso file.
hello again @Denis Bourgeois while simulating with the IDF that you gave me the simulation went well but the results weren't accepted, so I searched for something else while I've found this and thisit seems to be like what I want the question I have is how can link that to a thermal zone if it is possible with the inlet outlet inputs?
Your links point to more conventional geothermal systems (boreholes, heat pump, etc.), with a refrigerant (e.g. propylene glycol) as heat exchanger fluid - not ventilation air (as per your original question on Canadian wells / earth tubes). This is a separate UMH question IMO. I suggest you first run UMH searches and go over OpenStudio examples (search "ghx_"). Best of luck.
Asked: 2025-06-15 06:27:27 -0500
Seen: 126 times
Last updated: Jun 21
