[TRNSYS-users] About radiant floors

[Mavi Cambronero Vázquez <maviqnk@gmail.com>]

Hi all,

 

I´m a bit confused about how to introduce a radiant floor model. I´m using type 705 "RADIANT SLAB WITH EMBEDED PIPES AND GROUND STORAGE EFFECTS (INTERFACES WITH TYPE 56)" from TESS library. Reading the documentation I understand what I have to do is to create a very thin layer in TRNBuild for a boundary wall, the output temperature of the slab will be the input temperature of that boundary wall, and the surface temperature that TRNBUILD provides will be the "upper temperature" of the slab (type 705). That´s all??? Appart from that... The boundary wall is the same as the ground? or I have to create the ground and a new boundary wall?

 

If I use an active layer instead of type 705 an error appears: ERROR - STABILITY CRITERIA FOR WALL TYPE ACTIVE_RADIANT_W2    NOT FULLFILLED CHECK LAYER VALUES  NO FILE GENERATED. I follow the steps they are in TRNBUILD manual, but I´m not able to create a radiant floor correctly.

 

Any idea? Does someone know how to simulate well these radiant floors or what is my mistake??

 

Thanks,