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@gmail.com]
Gesendet: Montag, 8. Oktober 2012
15:31
An: trnsys-users@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@gmail.com>
Date: 2012/9/28
Subject: Converging error
To: trnsys-users@cae.wisc.edu, hotline@transsolar.com
---------- 已转发邮件
----------
From: "hotline" <hotline@transsolar.com>
To: trnsys-users <trnsys-users@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@cae.wisc.edu>
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than "Re: Contents of TRNSYS-users digest..."
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@tess-inc.com>
To: <trnsys-users@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@tess-inc.com.
Best
regards,
Matt Duffy
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@transsolar.com>
To: "karol.bandurski" <karol.bandurski@put.poznan.pl>
Cc: trnsys-users <trnsys-users@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
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@transsolar.com>
To: trnsys-users <trnsys-users@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
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@cae.wisc.edu>
Send TRNSYS-users
mailing list submissions to
trnsys-users@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@cae.wisc.edu
You can reach the person managing the list at
trnsys-users-owner@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@gmail.com>
To: TRNSYS-users@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.
***********************************************
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@put.poznan.pl>
To: <trnsys-users@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
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