[TRNSYS-users] Converging error

王洋 wanghongyang1767 at gmail.com
Fri Sep 28 04:44:26 PDT 2012


Dear Marion,

Thanks for your reply!

I checked all you mentioned, I can't find any special/abnormal settings.
Furthermore, it runs well when the time step is 1 hour. For other steps
e.g. 0.1 h, 0.2 h or 0.5 h, it appears that ERROR.

Please help me have a look at the attached project if you are free.

Many thanks in advance!

br.

wang

---------- 已转发邮件 ----------
From: "hotline" <hotline at transsolar.com>
To: trnsys-users <trnsys-users at cae.wisc.edu>
Cc:
Date: Fri, 28 Sep 2012 12:02:00 +0200
Subject: Re: [TRNSYS-users] Converging error

Wang,



This problem may occur from incorrect ambient condition settings:

Please check the following inputs of Type 56

1- TAMB

2- RELHUMAMB

3- TSKY

4- TSGRD



In addition make sure that in the BUI file the surface

-         outside emissitive is ≤ 1

-         outside convective heat transfer coefficient ist set to
reasonable value



If the error presits, we need the complete project to give further advice.




Marion

2012/9/28 <trnsys-users-request at cae.wisc.edu>

> Send TRNSYS-users mailing list submissions to
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>
> Today's Topics:
>
>    1. Re: problem with iterations?? (Matt Duffy)
>    2. Re: problem with iterations?? (Marion Hiller)
>    3. Re: Converging error (hotline)
>
>
> ---------- 已转发邮件 ----------
> From: Matt Duffy <duffy at tess-inc.com>
> To: <trnsys-users at cae.wisc.edu>
> Cc:
> Date: Thu, 27 Sep 2012 12:04:24 -0500
> Subject: Re: [TRNSYS-users] problem with iterations??
> **
>
> Karol,
>
>
>
> I noticed from your listing (*.lst) file that your working directory is
> located on your computer's desktop directory. This is not recommended due
> to the potential issues with the Windows OS system and write privleges. I
> would first try changing your working directory to the ".\MyProjects"
> directory or in a folder right on the "C:" drive. I am not certain that
> this is the issue with the TRNEXE, but if the problem persists, please
> contact your distributor, techsupport at tess-inc.com.
>
>
>
> Best regards,
>
>
> Matt Duffy
>
>
>
> TRNSYS on Facebook <http://www.facebook.com/TRNSYS>
>
> On 2012-09-27 03:46, Karol Bandurski wrote:
>
>  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 <http://www.ee.put.poznan.pl/>
>
> Poznan University of Technology
>
> www.ee.put.poznan.pl
>
> www.put.poznan.pl
>
>
>
>
>
> ---------- 已转发邮件 ----------
> From: "Marion Hiller" <hiller at transsolar.com>
> To: "karol.bandurski" <karol.bandurski at put.poznan.pl>
> Cc: trnsys-users <trnsys-users at cae.wisc.edu>
> Date: Fri, 28 Sep 2012 08:53:53 +0200
> Subject: 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 at put.poznan.pl]
> *Gesendet:* Donnerstag, 27. September 2012 10:47
> *An:* **trnsys-users at 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 <http://www.ee.put.poznan.pl/>****
>
> ****Poznan** **University**** of Technology****
>
> www.ee.put.poznan.pl****
>
> www.put.poznan.pl****
>
> ** **
>
>
> ---------- 已转发邮件 ----------
> From: "hotline" <hotline at transsolar.com>
> To: trnsys-users <trnsys-users at cae.wisc.edu>
> Cc:
> Date: Fri, 28 Sep 2012 12:02:00 +0200
> Subject: Re: [TRNSYS-users] Converging error
> ** ** ** ** **
>
> Wang,****
>
> ** **
>
> This problem may occur from incorrect ambient condition settings:****
>
> Please check the following inputs of Type 56 ****
>
> 1- TAMB****
>
> 2- RELHUMAMB****
>
> 3- TSKY****
>
> 4- TSGRD****
>
> ** **
>
> In addition make sure that in the BUI file the surface****
>
> **-         **outside emissitive is ≤ 1****
>
> **-         **outside convective heat transfer coefficient ist set to
> reasonable value****
>
> ** **
>
> If the error presits, we need the complete project to give further advice.
> ****
>
> ** **
>
> ** **
>
> ****Marion********
>   ------------------------------
>
>
> *Von:* 王洋 [mailto:wanghongyang1767 at gmail.com]
> *Gesendet:* Donnerstag, 27. September 2012 11:49
> *An:* **trnsys-users at cae.wisc.edu**
> *Betreff:* [TRNSYS-users] Converging error****
>
> ** **
>
> Dear all,
>
> I met a converging error when I changed simulation time step 1 hour into
> 0.1 hour or 0.2 hour or 0.01 hour as follows:
>
> *** Fatal Error at time   :      3972.000000
>     Generated by Unit     :    56
>     Generated by Type     :    56
>     Message               : outside temperature of    2(external) wall in
> zone   1at time  3972.00 not converged!
>
> Please tell me some possible solutions for that if you know. The attached
> is its Listing File.
>
> Many thanks in advance!
> Br.
>
> wang
>
>
> ****
>
> 2012/9/27 <trnsys-users-request at cae.wisc.edu>****
>
> Send TRNSYS-users mailing list submissions to
>         trnsys-users at cae.wisc.edu
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         https://mailman.cae.wisc.edu/listinfo/trnsys-users
> or, via email, send a message with subject or body 'help' to
>         trnsys-users-request at cae.wisc.edu
>
> You can reach the person managing the list at
>         trnsys-users-owner at cae.wisc.edu
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of TRNSYS-users digest..."
>
> Today's Topics:
>
>    1. Doctoral Fellowships at TERI University, India (R.K. Singh)
>    2. problem with iterations?? (Karol Bandurski)
>
>
> ---------- 已转发邮件 ----------
> From: "R.K. Singh" <singh.ramkishore at gmail.com>
> To: TRNSYS-users at cae.wisc.edu
> Cc:
> Date: Thu, 27 Sep 2012 10:04:34 +0530
> Subject: [TRNSYS-users] Doctoral Fellowships at TERI University, India****
>
> TERI University is currently inviting applications for Doctoral programmes
> in  Bioresources/Biotechnology;Natural Resource Management, Energy and
> Environment and Regulatory and Policy studies for semester starting january
> 2013. A range of scholarship opportunities  are also available  for the
> students in specific areas, the details of which can be accessed through
>  the following link.****
>
> http://teriuniversity.ac.in/index.php?option=com_content&view=article&id=54
> ****
>
> The last date for application is October  31st, 2012. The details
> regarding fee, eligibility and other requirements can be accessed through
> http://teriuniversity.ac.in/index.php?option=com_program****
>
> ** **
>
> For any further details please get in touch with Dr. Sapna A Narula,
> Associate Professor sapna.narula at teriuniversity.ac.in. ****
>
> ** **
>
> ***********************************************
> Dr. Ramkishore Singh
> Department of Energy & Environment
> TERI University
> Tel: 91-11-26122222, Ext. 1302
> Fax: 91-11-26122874
> Web: www.teriuniversity.ac.in
> ***********************************************
>
>
>
>
> ---------- 已转发邮件 ----------
> From: "Karol Bandurski" <karol.bandurski at put.poznan.pl>
> To: <trnsys-users at cae.wisc.edu>
> Cc:
> Date: Thu, 27 Sep 2012 10:46:49 +0200
> Subject: [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 <http://www.ee.put.poznan.pl/>****
>
> ****Poznan** **University**** of Technology****
>
> www.ee.put.poznan.pl****
>
> www.put.poznan.pl****
>
>  ****
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users****
>
> ** **
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
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