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Dear Trnsys users,
I'm working on a sensitivity analysis of natural
night ventilation. Therefore I have to vary all the input parameters in my
Prebid-Trnsys simulations.
For a window, I started to vary the U-value (from
1.07 to 1.13) only by changing the thickness of the cavity filled with Krypton
from 10mm to 15mm in the WINDOW 5.0 program and exported the results to the
window library in Prebid. When I use these two windows in my simulations, I got
exactly the same indoor temperatures in every time step, although the U-values
of the 2 windows differ a little bit in the w4-lib.dat file.
Is there an explanation? And how can I solve this
problem.
best regards,
Hilde Breesch
PhD student Buildings & Climatic Control Ghent University, Department of Architecture & Urban Planning Plateaustraat 22, B-9000 GENT tel. +32 9 264 78 61 fax. +32 9 264 41 85 e-mail: Hilde.Breesch@UGent.be http://allserv.ugent.be/~hbreesch/research |