Re: [TRNSYS-users] problem with iterations??

Karol,

In general the notice has nothing to do with a frozen TRNEXE.exe,

it is just an information.

The message indicates that the internal controller for turning on the

integrated heating/cooling has convergence problems and a deadband is applied to promote convergence.

This may be the case at the moment of turning ON or OFF something.

After 6 internal iterations a deadband is added to promote convergence.

If the convergence isn’t reached after 12 iterations a warning is written to the lst/log file.

Regards,

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: Donnerstag, 27. September 2012 10:47
An: trnsys-users@cae.wisc.edu
Betreff: [TRNSYS-users] problem with iterations??

Dear All,

I try to simulate dwelling with natural ventilation. I set some algorithm for window opening and ideal heating for colder part of year for each zone with set temperature depending on time of day.

When I run my yearly simulation it stop in one moment and TRNEXE is frozen... There is even no error! Then I can only turn off TRNEXE.

Only think what appear (many times) in .lst file is

Notice: More than 6 iterations for internal regulation HEATING/COOLING.

I will be grateful for any advice!

I enclose .lst file.

Regards,

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

Karol Bandurski MSc.

Institute of Environmental Engineering

Poznan University of Technology