[EnergyPlus_Support] Suspicious nodes have 0 references -

["Luis Blanes" <lmblanes@xxxxxxxxx>]

Hi modellers.

I have set up a simulation of a Ventilated Slab. Seems to work OK, no severe errors and no worriying warnings.

Although I found the following issues:

1.- I found that the following variable:

"Ventilated Slab Air Mass Flow Rate"
"Ventilated Slab Slab Return Air Temperature"

show constanly 0 value in the simulation results, which means "air is not passing trough the ventilated slab, and not returning...???"

Results for Air temperature delivered by the Ventilated Slab works OK, and Mean Radiant Temperature is affected by the slab surface, is can be seen comparing MRT and Mean Air Temperature with other zones set with an Ideall Loads HVAC system. 

2.- The BND file shows this text:


! Suspicious nodes have 0 references.  It is normal for some nodes, however.
! Listing nodes with 0 references (culled from previous list):
! <Suspicious Node>,<NodeNumber>,<Node Name>,<Node Fluid Type>,<# Times Node Referenced After Definition>
 Suspicious Node,2,ZONE4VENTSLABZONEINNODE,Air,0
 Suspicious Node,20,ZONE 4 NODE,Air,0
 Suspicious Node,21,ZONE 4 OUTLET NODE,Air,0
 Suspicious Node,22,ZONE_1 ZONE AIR NODE,Air,0
 Suspicious Node,23,ZONE_1 RETURN OUTLET,Air,0
 Suspicious Node,25,ZONE_2 ZONE AIR NODE,Air,0
 Suspicious Node,26,ZONE_2 RETURN OUTLET,Air,0
 Suspicious Node,28,ZONE_3 ZONE AIR NODE,Air,0
 Suspicious Node,29,ZONE_3 RETURN OUTLET,Air,0
 Suspicious Node,34,ZONE4VENTSLABEXHNODE,Air,0


Anyone have experience simulating Ventilated Slabs?

Thanks
Luis Blanes




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