Didier,
There is a line in the BUI file:
OUTPUTS
TRANSFER : TIMEBASE=1.000
and while I presume that you could define the timebase using a
variable, I am not sure if there is a way to prevent GenOpt from trying
to choose a value of that variable.
In my experience, while there is a dependence on the time base, when
doing comparison between two possibilities, it is best to choose a
single time base for both of them. Also, for most constructions, a time
base of 1hr is satisfactory.
Best,
David
On 7/7/2010 06:39, gossard@cict.fr wrote:
Hi all,
I want to find the optimal characteristics (minimising the annual
energy-consumption) of the massive part of the external wall and study
the influence of the insulation layer (position or/and nature) on the
optimal characteristics of the massive part. My variables are the
conductivity, the capacity and the density of the massive part. I'm
using GenOpt2 and TRNSYS 16 for that.
If I understood correctly, the calculations of heat transfer through
the wall depend on the nature of the wall (if it is heavy or light) and
so, they depend on the wall time base. But how to adapt this wall time
base to the nature of each wall ? Is it possible to do it with GenOpt
commands ?
Please, find enclosed my BUI-file. The external wall I want to optimize
is called "MUREXT34" (external wall) and I search the optimal
characteristics of "PARPAING" (massive part).
Best regards,
Didier Gossard.
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David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
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bradley@tess-inc.com
http://www.tess-inc.com
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