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Karol, in fact, it is accuracy
problem that show the different error sum in excel . In your summary file the
largest number is 1.693E+07 . The number is equal to 1693.E+04.
Due to the fact that we do
print values with accuracy of 1E+04 you can’t expect
the sum to be more accurate with in excel. Therefore, you can’t
recalculate the balance by excel. Best, Dipl.-Ing.
Marion Hiller Geschäftsführer:
Dipl.Ing. Matthias Schuler, Dipl.Ing. Von: Karol Bandurski
[mailto:karol.bandurski@put.poznan.pl] Thanks It seems to me that the reason could be
accuracy. Karol From:
Marion Hiller [mailto: Karol, I have to check it in
more detail. I’ll try to get
back to you today. Dipl.-Ing.
Marion Hiller Geschäftsführer:
Dipl.Ing. Matthias Schuler, Dipl.Ing.
Von: Karol Bandurski [mailto:karol.bandurski@put.poznan.pl]
Marion, Thank you for tip – there was
mistake in file generate in TRNSYS – SUMMARY.BAL: QTRANS is with
‘-‘ and should be without. But there is
still something wrong: my sums and TRNSYS sums differ. Take a look pleas (enclose)! Karol From:
Marion Hiller [mailto:hiller@transsolar.com]
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) Dipl.-Ing.
Marion Hiller Geschäftsführer:
Dipl.Ing. Matthias Schuler, Dipl.Ing.
Von: Karol Bandurski [mailto:karol.bandurski@put.poznan.pl]
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 |