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Good evening,
I am Sylvain CHATZ from ENERCOBAT engineering
office, working in France on high performant buildings design.
It's my first time on this list and my concern is
about PCM layers simulation on TRNSYS 16.1.
I've tried to use "type 204" proposed on
SEL web site, but documentation and example supplied are not
enough for my understanding.
My questions are about the SUNSPACE example
supplied into the files package loaded :
There are 2 air zones in the TRNBUILD type 56 model
of this example : SunZone and BackZone.
SunZone is where "PCM wall" has been installed.
So :
- How to make the difference if we want "PCM
layer" into all walls surfaces from SunZone, or only into some of
them?
- Why the resistance of the "PCM massless
layer" created in TRNBUILD is only 0.1 m².K.h/kJ?
- Why the "PCM wall" using the "PCM massless
layer" into SunZone (boundary wall calling T_PCM
input) presents a so small surface of 0.2 m²?
- Why QCOMI is taken from the same "PCM
Wall" (14) and not from other walls?
- Do we have to change values into the 4 text
external files supplied (NodeTemp.txt, Tila.txt, Ceff1.txt, ALKU.txt) or do
we only have to call their path?
- Why the PCMeT
(average surface temperature of "PCM wall") calculated by type 204 is sent to
the boundary "PCM wall" input (T_PCM) into type 56 ?
type 204 receives QCOMI
from 0.2 m² surface (14), and T_AIR from SunZone volume,
then it calculates
and sends T_PCM to boundary input for 0.2 m² surface
(14)
=> I don't see in
which way this sequence allows modelization of PCM introduction
into a wall?
I certainly missed some key points to understand
the principle of this model. Many thanks by
advance if somebody could explain how it works.
Regards
Sylvain
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