Re: [TRNSYS-users] NType 904 -what's going on with equation

Karol,

you use the wrong signs fort he terms in your balance.

Pease check the SIGNs + and – given in the equation for the balance (also see 05-MultizoneBuilding.pdf)

Marion

Dipl.-Ing. Marion Hiller
TRANSSOLAR: KlimaEngineering - Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäude
Munich - New York - Stuttgart + 49.711.67976.0

Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart
Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.: DE152272639

Geschäftsführer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher

Von: Karol Bandurski [mailto:karol.bandurski@put.poznan.pl]
Gesendet: Montag, 21. November 2011 13:02
An: trnsys-users@cae.wisc.edu
Betreff: [TRNSYS-users] NType 904 -what's going on with equation

Hi,

Could somebody explain me how it is possible:

I get file SUMMARY.BAL (enclosed) as a result of NType 904, and there is such equation:

BAL_ENERGY= -DQAIRdt +QHEAT -QCOOL +QINF +QVENT +QCOUPL -QTRANS +QGAININT +QWGAIN +QSOLGAIN

But I calculate BAL_ENERGY in excel (enclosed), the same way, for each zone, and result are completely different!!!???

How it is possible?

Have I done something wrong?

Regards,

Karol

------------------------------------------------

Karol Bandurski MSc.

Institute of Environmental Engineering

Poznan University of Technology