To solve your problem, you may increase TRNLIB TIMEBASE (Edit Building - OUTPUTS - TIMEBASE (on the top left hand corner of the window)) to allow automatic heat transfer calculation, or create a new material with same phyical properties and lower thickness.
Best regards, Adrien
Catherine Massart a écrit :
Dear TRNSYS usersI want to make simulations on highly insulated buildings.Some of the walls I created bring a bug.« Error creating the wall transfer function coefficients :Stability criteria not fullfilled
Check layer definition (thickness, ratio of conductivity/density)
Please check the INF-file for further information »I heard this could be solved by changing the density and capacity of the layer that causes the problem (here, a ceiling wood structure insulated with 40cm of wood fiber pannels (Steico))But I cannot do this because I want to evaluate the impact of the inertia on the inside temperatures.I tried by deviding the material in 2 layers: one would have the same inertia and the other, massless, would bring the thermical resistance. It doesn't work, stability criteria is still not fullfilled...Can someone help me?Thanks a lotCatherine MassartUCL-Belgium
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Adrien JEZEQUEL Simulations Thermiques Dynamiques ITF (Ingénierie Tous Fluides) 87, route de Chambéry 73230 ST ALBAN EN LEYSSE FRANCE Tel: 04.79.75.00.29 Website: www.itf.biz Mail : a.jezequel@itf.biz |