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[EnergyPlus_Support] Heat loss surface to ground - how to get the details?



Dear E+ users,

I want to calculate the heat losses of a surface (slab) facing the ground. As far as I understood I have multiple choices to do so:

1. buildingSurface:Detailed / OutsideBoundaryCondition:Ground
2. Floor:GroundContact object 
3. Detailled Ground Heat Transfer Group

I tried 1 and 2, however for both I was not able to find anything in the outputs (variable) to show me the losses   (conductive / transmissive) of this surface. It seems to be considered in the overall calculations but how can I find out the details for this surface? Do I have to use the "Detailed Ground Heat Transfer" Group or is there a simpler way?

Therefore my question is: What is the simplest/quickest way to calculate (and output) the thermal losses of a surface facing the ground?

Thank your for any tips.

Arnaud



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