[EnergyPlus_Support] Radiant Floors - slab on grade losses?

["taharvey2001" <taharvey@xxxxxxxxxxxxxxxx>]

We're trying to model a radiant floor system, slab on grade. The
trouble I'm having is the ground (slab preprocessor) modeling is
decoupled from the actual simulation. I'm not sure there is a accurate
means to model radiant floors losses in a slab in E+. The preprocessor
assumes an air to slab convection, doesn't consider HVAC cycling
on/offs, and of course isn't actually coupled to the building simulation.

Anyone have ideas on how to do this in a reasonable accurate way? We
are open to other tools besides E+ too.

When will ground loss simulations be coupled with the main simulation
engine. The current preprocessor situation we find very unsatisfactory
in many situations.




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