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What methods/resources are available to add ground temperatures

asked 2020-09-02 18:41:54 -0500

antonszilasi gravatar image

Dear all,

I'd like to add ground temperatures to my model in particular we would like to use the FCfactorMethod just like the DOE prototype buildings.

As far as I can tell there are no methods/code in the OpenStudio SDK or OpenStudio standards gem to help with adding the Construction:FfactorGroundFloor or Site:GroundTemperature:FcfactorMethod objects to the IDF.

If this is the case, would it be easier to use another method to simulate ground heat transfer? Could someone please suggest one.

I've also tried to use the standards gem ground temp method to at least add the ground temperatures based on climate zone (ASHRAE-169-2006), ashrae building type and ashrae standard

However it doesn't like the arguements which I fed in I always get the generic values returned in so I'm wondering in what format is it expecting these arguements?

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answered 2020-09-02 22:56:07 -0500

updated 2020-09-02 22:56:25 -0500

Great job on thinking about looking at the openstudio-standards gems for reference. However, the method in the gem will not help you because it is meant for SiteGroundTemperatureBuildingSurface (reference).

Which version of OpenStudio are you using? OpenStudio has bindings for the object SiteGroundTemperatureFCfactorMethod as of 3.0.1.

If for some reason you really cannot update your model to 3.0.1, you will need to create an EnergyPlus measure to get the translated Site:GroundTemperature:FCfactorMethod and change the values. For simplicity, I would recommend just updating to 3.0.1.

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Hi @Luis Lara , I was just wondering if the Site:GroundTemperature:FCfactorMethod output temperatures that can be found in the Energy Plus Report file could be used as inputs for monthly ground temperatures? A full explanation of my question can be found here Thanks!

jaklloyd gravatar image jaklloyd  ( 2020-11-11 13:04:04 -0500 )edit

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Asked: 2020-09-02 18:41:54 -0500

Seen: 78 times

Last updated: Sep 02 '20