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On the SDK side of things, the undisturbed ground temperature model options for ground-source heat exchanger classes have evolved since v3.4. CTRL-F "undisturbed" in both horizontal and vertical SDK classes. Forward translation issues were fixed for SDK v3.6 for horizontal, and and subsequently harmonized for SDK v3.7 for vertical. These SDK issues were first filed following a reported OpenStudioApplication bug. Although the SDK fixes are now completed, the App issue remains open.


Up until v1.6, App users had 2 options ("KusudaAchenbach" and "SiteGroundTemperature") for the horizontal model, with related parameters:

image description

I think this is what you're referring to. As of v3.6, the SDK no longer supports both options:

image description

... which is likely why you're not seeing the previous set of options in App v1.6 onwards. I suspect these options were deprecated when merging in the aforementioned fixes. Given the reliability of the SDK fixes, I'm linking this post to the initial App bug report - a friendly reminder to move forward with a fix.

Too many characters for a comment.

On the SDK side of things, the undisturbed ground temperature model options for ground-source heat exchanger classes have evolved since v3.4. CTRL-F "undisturbed" in both horizontal and vertical SDK classes. Forward translation issues were fixed for SDK v3.6 for horizontal, and and subsequently harmonized for SDK v3.7 for vertical. These SDK issues were first filed following a reported related OpenStudioApplication bug. report. Although the SDK fixes are now completed, the App issue remains open.


Up until v1.6, App users indeed had 2 options ("KusudaAchenbach" and "SiteGroundTemperature") for the horizontal model, with related parameters:

image description

I think this is what you're referring to. As of v3.6, the SDK no longer supports both options:

image description

... which is likely why you're not seeing the previous set of these options in App v1.6 onwards. I suspect these options were deprecated when merging in the aforementioned fixes. Given the reliability of the SDK fixes, I'm linking this post to the initial App bug report - a friendly reminder to move forward with a fix.