[esp-r] Slab-on-grade for thermally activated slab btw. zones

[Achim.geissler]

Dear all

has anyone used the Slab-on-grade hydronic floor plant component
successfully for a "normal" thermally activated floor slab between two
offices? Results seem to imply that the "other" zone does not know about the
thermal activation. The internal surface temperature of the slab in the
"other" zone agrees with what one would expect for a heavy concrete slab
without thermal activation (i.e. approx. the mean temperature of the daily
temperature swing of the zone).

The setup was this: Two stacked zones, 320 mm concrete floor slab split in
three layers as symmetric MLC (80 - 160 - 80). A Slab-on-grade component is
linked to node 6 (centre of inner 80 mm layer) of the floor of the upper
zone. The connection between the zones seems correct, both .geo and the .cnn
read correctly. Temperature for the floor surface of the upper zone are
plausible. Temperatures for the ceiling of the lower zone as described are
not.

Thanks for any ideas.
Best
Achim



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