AW: Active Layer

this error occurs if you use in a wall a very thin or a very thick layer.

Such configurations might cause problems with the transferfunctions.

If you have a very thin Layer like you have with: PVCBEL = 2 mm you should model this as an masless Layer.

The position of the error in the *.inf gives you the wall whichs causes the error.

Then I normaly delete layer by layer to see which Layer causes the problem.

your TRNSYS Hotline Team

T.Welfonder, M.Rudolph

Mailto:Hotline@transsolar.com; http://www.transsolar.com
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please give me somebody a hint, what could be meant by: "UNABLE TO FIND A ROOT AFTER INDICATION THAT A ROOT EXISTED". That is an error message generated by PREBID during the transfer function coefficients calculation, because of my active layer. I believe I designed it properly (cold ceiling modules), but after quite a while, I still cannot find the problem:

WALL KMODUL2
LAYERS   = ALUMINIUM KLAYER ALUMINIUM LDECKE BET150 STWOLL012 ESTRICH45 PVCBEL
THICKNESS= 0.036     0      0.005     0      0.15   0.05      0.045     0.002
ABS-FRONT= 0.6   : ABS-BACK= 0.6
HFRONT   = 11 : HBACK= 11

LAYER KLAYER
PSPACING= 0.12 : PDIAMETER= 0.01 : PWALLTHICKNESS= 0.001 : PCONDUCTIVITY= 1382.4 : CPFLUID= 4.18

LAYER LDECKE
RESISTANCE= 1.25

I also tried different time bases. And another short question: How is it defined, that the modules hang below the ceiling and do not lay on the floor or are even vertical boundaries?

Thank you very much!