[TRNSYS-users] Fwd: Converging error

Wed Oct 17 01:21:53 PDT 2012

Dear Wang,

1) I use TRNSYS 16, there is no TSGRD in TYPE 56.
Ok. Please always include the TRNSYS release number .

2) The height over sea level of Default is 0 m I used.
Default values NEED to be adapted to your data!

3) You are right. I tried to use *.tm2 weather data, this Error
disappeared! 

As I mentioned previous, there must be an error in your data file. Link
the outputs to the online/printer for checking

4) Yes, The data reader Type 9 is placed after the building now for my
simulation., 

For a successive method all input data types should be placed at the
beginning. 

Check the component order and rearrange it.

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: 王洋 [mailto:wanghongyang1767 at gmail.com] 
Gesendet: Mittwoch, 10. Oktober 2012 13:37
An: hotline
Cc: trnsys-users
Betreff: Re: Fwd: Converging error

Dear Marion,

Many thanks for your patient reply!

1) I use TRNSYS 16, there is no TSGRD in TYPE 56.
2) The height over sea level of Default is 0 m I used.
3) You are right. I tried to use *.tm2 weather data, this Error
disappeared! But my Userdefined weather data is TRN/TRY weather data.
Why does it result in aforementioned Errors (Converging error by my past
emails)? 
If I must use our own TRN/TRY weather data, how to avoid this Converging
error?
4) Yes, The data reader Type 9 is placed after the building now for my
simulation., Do you mean Type 9 should be placed before the Building
Type 56? Is Better?

Many thanks in advance!

Br.

wang

2012/10/10 hotline <hotline at transsolar.com>

Dear Wang, 

there are several issues within your simulation concerning the outside
longwave exchange of external surfaces 

1.)     You didn’t connect TSGRD such that it is set 0 =>  If you have
no information set it Tamb 

2.)     For Sky temperature calculation with Type 69, you forgot to
enter the height above sea level. 

3.)     You read the ambient temperature and the relative air humditiy
from a userdefined file by type 9 
instead of using the data from the weather file. 
This file wasn’t attached, but it might be an error source especially
when interpolating incorrect data.
For testing, please use the ambient temperature and rel. humidity from
the assigned weather file throughout your simulation.
Please check your userdefined data and the outputs of Type 9 WITHOUT
connecting them to TYPE 56. 

4.)     In addition, please check the component order. The data reader
Type 9 is placed after the building. 

Marion 

  _____  

Von: 王洋 [mailto:wanghongyang1767 at gmail.com] 
Gesendet: Montag, 8. Oktober 2012 15:31
An: trnsys-users at cae.wisc.edu; hotline
Betreff: Fwd: Converging error 

Dear Marion and TRNSYS Users,

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 

---------- Forwarded message ----------
From: 王洋 <wanghongyang1767 at gmail.com>
Date: 2012/9/28
Subject: Converging error
To: trnsys-users at cae.wisc.edu, hotline at transsolar.com

---------- 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> 

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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 

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 

   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 

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 

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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