Dear Camille,
Every energy balance has a boundary.
The boundary of the energy balance 4 is the inside surface of walls, floors, ceilings/roofs and windows.
The Energy balance 4 doesn’t include the constructions themselves!!
In other words, B4_QTRANS is the energy that leaves/enters a thermal zone by
conduction into/out of the construction of the side of
walls, floors, ceilings/roofs and windows facing the zone.
Best regards,
Marion
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Dipl.-Ing. Marion Hiller
TRANSSOLAR Energietechnik GmbH
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Von: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org>
Im Auftrag von BERNARD Camille via TRNSYS-users
Gesendet: Donnerstag, 21. Februar 2019 09:05
An: trnsys-users@lists.onebuilding.org
Cc: BERNARD Camille <camille.bernard@etamine.coop>
Betreff: [TRNSYS-users] B4_QTRANS
Hello,
I model a typical office building : one intermediate level of a tower.
In order to understand the energy balance, I have looked at each variable of balance 4.
I have difficulties to understand QTRANS, and the explanation in the documentation is quite vague :
Balance 4 is a “balance for zones” : results are given by zone.
QTRANS is described as : “transmission into the surface from inner surface node (might be stored in the wall, going to a slab cooling or directly
transmitted)“ : it refers to surface and not to zone…
Do you know what does it represent and how it is calculated ?
Thank you,
Best regards,
Camille Bernard
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camille.bernard@etamine.coop