-- Peter Vogelsanger Systemtechnik und Speicher, Institut für Solartechnik SPF Hochschule für Technik Rapperswil, Oberseestr.10, CH-8640 Rapperswil Tel +41 55 222 48 23, Fax +41 55 222 48 44, http://www.solarenergy.ch
here a method for starting trnsys in low priority.
I am using a simple dos-batch-file for starting the simulation.
copy "E:\coolsan\iisibat\bregenz\VAR06\lhb_Var70.dck" "run.dck"
start /belownormal /wait C:\trnsys15\trnsys.exe run.dck /N
copy "E:\coolsan\temp\tair.out" "E:\coolsan\results\VAR06\tair_70.out"
The commando start can be used with a lot of options and in win xp its possible
to set an priority class for the process (/belownormal /low /high...).
With sunny regards,
At 03:41 PM 5/4/2004, you wrote:
I'm doing sensitivity analysises in the same way as Hilde (with Matlab), if you want an example of the matlab-file, I can send it to you, Beatriz.
But I also ran into a problem:
I want to use my data-files from type 25 as an input in my next run of trnsys, but there is always a header line in the type25-files. This data file is 8760 houres, i.e. one year long. I don't have any problems when my simulation is one year aswell; I just let the data reader skip the first line. But when I want to run more years in a row, the data reader doesn't skip the first row anymore and an error is produced.
Does somebody know how I can get rid of the header line in trnsys ? or how to skip the header line when the second year is started ?
And something else, does somebody know how to put TRNSYS the whole in time in low priority, i.e. before it starts running ? Everytime it restarts for the analysis, I have to open the task manager and do it again.
Hilde Breesch wrote:
I'm working on a sensitivity analysis too (to identify which parameters have the greatest impact on thermal summer comfort in a building that is cooled by natural night cooling). I control the simulation process in Matlab to prepare the input files for Prebid and Trnsys and to run these programs too.
to run Prebid from an other program:
rename prebid.exe bid.exe and use command line:
to run Trnsys:
\Trnsys15\\trnsys.exe name_of_file.dck /n
If you have more questions, you can send me an e-mail directly.
PhD student Buildings & Climatic Control
Ghent University, Department of Architecture & Urban Planning
Plateaustraat 22, B-9000 GENT
tel. +32 9 264 78 61 fax. +32 9 264 41 85
----- Original Message -----
From: Beatriz Porcar Laynez
Sent: Monday, May 03, 2004 4:01 PM
Subject: sensitivity analysis
Dear TRNSYS users,
I am trying to perform a sensitivity analysis to identify the parameter to which indoor air Tª is most sensitive. I am specially interested in a number of particular parameters. Is there any capability implemented in TRNSYS, which could help to develop this kind of analysis.
Thanks a lot in advance.
Best regards, Beatriz.
Beatriz Porcar Laynez
Bioclimatic Architecture Programme
Renewable Energy Department
CIEMAT (Centro de Investigaciones Energéticas Medioambientales y Tecnológicas)
Phone: (+34) 913466344
Mobil phone: 628271620
DI. Richard Heimrath
Institut fuer Waermetechnik / Institute of Thermal Engineering
Div. Solar Energy and Thermal Building Simulation
TU Graz / Graz University of Technology
Inffeldgasse 25 B, A-8010 Graz