Yes! Thank you! Sorry for I overlooked it.. Karol From: Marion Hiller <> Dear Karol, I assume there is a misunderstanding of NTYPE 8 (DQAIR) (see 05-MultizoneBuilding.pdf) NType 8 is the sensible change in internal energy of air in airnode since the beginning of the simulation. Therefore, instead of using NType8(at time = current timestep) you need to use the following term: NType8(at time = current timestep) - NType8(at time = previous timestep). If you look at your xls SUM is always “equal” to – (dtC_dtau ) of the previous line. Best, Marion Transsolar Software Team Transsolar Stuttgart | Munich | Paris | New York Transsolar Energietechnik GmbH | Curiestrasse 2 | 70563 Stuttgart | Germany CEO: Matthias Schuler, Thomas Auer, Stefan Holst, Dieter Schnelle Registered at Amtsgericht Stuttgart HRB 23347 | USt-IdNr.: DE 152272639 Von: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> Im Auftrag von karol.bandurski--- via TRNSYS-users Dear All, I have generated thermal balance of air in zone, I use for it:
But the balance is not equal zero (enclosed). I would be grateful for any tips. Best, --------------------------------------------------------------------------- Karol BANDURSKI Ph.D, Assistant Professor Faculty of Environmental and Energy Engineering Division of Heating, Air Conditioning and Air Protection Poznan University of Technology https://www.researchgate.net/profile/Karol_Bandurski *** dr inż. Karol BANDURSKI, Adiunkt Wydział Inżynierii Środowiska i Energetyki Zakład Ogrzewnictwa, Klimatyzacji i Ochrony Powietrza Politechnika Poznańska |