David,
Thank you for the reply. The EES
project was defenately openening and closing, but EES itself
stayed open. I fixed this problem now with changing the
pad for the EES project from
"c:\xxx\xxx\hydraulics\EES.ees"
to "\hydrolics\EES.ees".
But now it seems that EES-TRNSYS
coupling has a limited number of outputs, is this correct?
When I run a long simulation with alot of timesteps, the
simulation stops after a while, I think it is after 66000
timesteps with 20 inputs and 40 outputs with the EES-TRNSYS
coupling. Is there a solution for this?
Using another type is no option
as I need to make calcultation with EES at every timestep.
Many thanks
Joris Doms
Joris,
It isn't actually the opening and closing that takes time (EES
stays running the whole time). The slowness is the EES
calculation time and the fact that EES is called at every single
timestep and at every single iteration within a timestep of your
TRNSYS simulation. There are a few different versions of Type66
that allow you to avoid calling EES whenever possible (basically
an input that is an on/off switch for the EES calculations). If
you know that your EES program doesn't have to be called
(because the device that it models is inactive) then you can
"turn off" the call to Type66 and save some time. Take a look at
the EES example in the ..\TrnsysXX\Examples\Calling_EES\
directory; all the different options are shown in there.
Kind regards,
David
On 2/20/2011 15:43, Doms Joris wrote:
Dear TRNSYS users,
When simulating an applied
thermal system, I'm using EES for the hydronic part. I
programmed the hydronic circuit in EES and coupled it with
TRNSYS via Type 66a. This coupling works fine, but;
The problem is that the
simulation runs very slow. Every timestep that TRNSYS
calls EES, the EES project is opened and closed. Is there
a way to set some settings so EES isen't closed and
reopened each time, this would minimize the solution time
alot.
Thanks on advance
Joris Doms
This
e-mail, any attachments and the information it contains
are confidential and meant only for the use of the
addressee(s) only. Access to this e-mail by anyone other
than the addressee(s) is unauthorized. If you are not the
intended addressee (or responsible for delivery of the
message to such person), you may not use, copy, distribute
or deliver to anyone this message (or any part of its
contents) or take any action in reliance on it. In such
case, you should destroy this message and notify the
sender immediately. If you have received this e-mail in
error, please notify us immediately by e-mail or telephone
and delete the e-mail from any computer.
All reasonable precautions have been taken to ensure no
viruses are present in this e-mail and its attachments.
As our company cannot accept responsibility for any loss
or damage arising from the use of this e-mail or
attachments we recommend that you subject these to your
virus checking procedures prior to use.
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley@tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com
This e-mail, any attachments and the information it contains
are confidential and meant only for the use of the
addressee(s) only. Access to this e-mail by anyone other
than the addressee(s) is unauthorized. If you are not the
intended addressee (or responsible for delivery of the
message to such person), you may not use, copy, distribute
or deliver to anyone this message (or any part of its
contents) or take any action in reliance on it. In such
case, you should destroy this message and notify the sender
immediately. If you have received this e-mail in error,
please notify us immediately by e-mail or telephone and
delete the e-mail from any computer.
All reasonable precautions have been taken to ensure no
viruses are present in this e-mail and its attachments. As
our company cannot accept responsibility for any loss or
damage arising from the use of this e-mail or attachments we
recommend that you subject these to your virus checking
procedures prior to use.