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<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial>Dear Wang!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial>This is only possible if You use TRNSYS
17.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial>You can not use the ideal heating
directly.</FONT></SPAN></DIV>
<UL dir=ltr>
<LI>
<DIV align=left><SPAN class=981335814-24022011><FONT color=#0000ff size=2
face=Arial>Define a GeoPosition Geometry using the xyz-Cube
Icon.</FONT></SPAN></DIV></LI>
<LI>
<DIV align=left><SPAN class=981335814-24022011><FONT color=#0000ff size=2
face=Arial>Define a "other Gain" with the correct radiative ratio and it's
power as input</FONT></SPAN></DIV></LI>
<LI>
<DIV align=left><SPAN class=981335814-24022011><FONT color=#0000ff size=2
face=Arial>Calculate the power of the gain using an iterative feedback
controller (Type22) in the SimulationStudio;<BR>Inputs are the desired
and the actual zone temperature and the output is the required heating power
connected to the gain-input of Type56.</FONT></SPAN></DIV></LI></UL>
<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial>That should do the job of "simulating" an ideal heating at a
specific position.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=981335814-24022011><FONT color=#0000ff
size=2 face=Arial>With kind regards,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=981335814-24022011> <FONT
color=#0000ff size=2 face=Arial>Matthias Kersken</FONT></SPAN></DIV>
<DIV> </DIV>
<DIV class=Section1>
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style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Dipl.-Ing. Matthias
Kersken<BR></SPAN></B><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Wissenschaftlicher
Mitarbeiter / Abteilung Energiesysteme<o:p></o:p></SPAN></P>
<P
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style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Fraunhofer-Institut für
Bauphysik <BR>Institutsteil Holzkirchen</SPAN><o:p></o:p></P>
<P
style="MARGIN: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 2.25pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: -9.0pt; mso-height-rule: exactly"><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">Fraunhoferstraße
10<BR>83626 Valley</SPAN><o:p></o:p></P>
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style="FONT-FAMILY: Arial; FONT-SIZE: 10pt">eMail: <A
href="mailto:Matthias.Kersken@ibp.fraunhofer.de">Matthias.Kersken@ibp.fraunhofer.de</A><BR>Telefon
08024 / 643-204<BR>Telefax 08024 / 643-366<BR><A
href="http://www.ibp.fraunhofer.de/">www.ibp.fraunhofer.de</A></SPAN><o:p></o:p></P></TD></TR></TBODY></TABLE>
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style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB>Dipl.-Ing. Matthias Kersken<BR></SPAN></B><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB>Research Associate / Department Energy Systems
</SPAN><SPAN style="mso-ansi-language: EN-GB"
lang=EN-GB><o:p></o:p></SPAN></P>
<P
style="MARGIN: 9pt 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 2.25pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: -9.0pt; mso-height-rule: exactly"><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB>Fraunhofer Institute for Building Physics <BR>Branch
Holzkirchen</SPAN><SPAN style="mso-ansi-language: EN-GB"
lang=EN-GB><o:p></o:p></SPAN></P>
<P
style="MARGIN: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 2.25pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: -9.0pt; mso-height-rule: exactly"><SPAN
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style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB>Fraunhoferstraße</SPAN></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB> 10<BR>D-83626 Valley</SPAN><SPAN
style="mso-ansi-language: EN-GB" lang=EN-GB><o:p></o:p></SPAN></P>
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style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB>eMail: </SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"><A
href="mailto:Matthias.Kersken@ibp.fraunhofer.de"><SPAN
style="mso-ansi-language: EN-GB"
lang=EN-GB>Matthias.Kersken@ibp.fraunhofer.de</SPAN></A></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-ansi-language: EN-GB"
lang=EN-GB><BR>Phone +49 8024 / 643-204<BR>Fax +49 8024 /
643-366<BR></SPAN><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt"><A
href="http://www.ibp.fraunhofer.de/"><SPAN
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lang=EN-GB>www.ibp.fraunhofer.de</SPAN></A></SPAN><SPAN
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lang=EN-GB> <o:p></o:p></SPAN></P>
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lang=EN-GB> <o:p></o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB> <o:p></o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
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lang=EN-GB><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="mso-ansi-language: EN-GB"
lang=EN-GB>---<o:p></o:p></SPAN></P></DIV>
<DIV> </DIV><BR>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV dir=ltr lang=de class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>Von:</B> 王洋 [mailto:wanghongyang1767@gmail.com]
<BR><B>Gesendet:</B> Donnerstag, 24. Februar 2011 15:48<BR><B>An:</B>
trnsys-users@cae.wisc.edu<BR><B>Betreff:</B> [TRNSYS-users] ideal heating
position in TRNBUILD<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>Dear all,</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>To ideal heating in TRNBUILD: Where is this heating? Can I define its
position? If so, how to define its position? How is the ideal
heating operating or working?</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>thanks !</DIV>
<DIV> </DIV>
<DIV>br.</DIV>
<DIV> </DIV>
<DIV>wy<BR><BR></DIV>
<DIV class=gmail_quote>在 2011年2月24日 下午3:24， <SPAN dir=ltr><<A
href="mailto:trnsys-users-request@cae.wisc.edu">trnsys-users-request@cae.wisc.edu</A>></SPAN>写道：<BR>
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class=gmail_quote>Send TRNSYS-users mailing list submissions to<BR>
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Contents of TRNSYS-users digest..."<BR><BR>Today's Topics:<BR><BR> 1.
Re: Problems with calling EES (Type66a) (Doms Joris)<BR> 2. Re:
RADIATIVE PART of Heating (??)<BR><BR><BR>---------- 已转发邮件
----------<BR>From: Doms Joris <<A
href="mailto:joris.doms@vito.be">joris.doms@vito.be</A>><BR>To: David
BRADLEY <<A
href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</A>><BR>Date: Thu,
24 Feb 2011 15:17:49 +0100<BR>Subject: Re: [TRNSYS-users] Problems with
calling EES (Type66a)<BR>
<DIV bgcolor="#ffffff">
<DIV><FONT color=#000000 size=2 face=Tahoma>David,</FONT></DIV>
<DIV><FONT size=2 face=tahoma></FONT> </DIV>
<DIV><FONT size=2 face=tahoma>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</FONT></DIV>
<DIV><FONT size=2 face=tahoma>"c:\xxx\xxx\hydraulics\EES.ees" to
"\hydrolics\EES.ees".</FONT></DIV>
<DIV><FONT size=2 face=tahoma></FONT> </DIV>
<DIV><FONT size=2 face=tahoma>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?</FONT></DIV>
<DIV><FONT size=2 face=tahoma></FONT> </DIV>
<DIV><FONT size=2 face=tahoma>Using another type is no option as I need to
make calcultation with EES at every timestep.</FONT></DIV>
<DIV><FONT size=2 face=tahoma></FONT> </DIV>
<DIV><FONT size=2 face=tahoma>Many thanks</FONT></DIV>
<DIV><FONT size=2 face=tahoma></FONT> </DIV>
<DIV><FONT size=2 face=tahoma>Joris Doms</FONT></DIV>
<DIV style="DIRECTION: ltr">
<HR>
<FONT size=2 face=Tahoma><B>Van:</B> David BRADLEY [<A
href="mailto:d.bradley@tess-inc.com"
target=_blank>d.bradley@tess-inc.com</A>]<BR><B>Verzonden:</B> dinsdag 22
februari 2011 23:40<BR><B>Aan:</B> Doms Joris<BR><B>CC:</B> <A
href="mailto:trnsys-users@cae.wisc.edu"
target=_blank>trnsys-users@cae.wisc.edu</A><BR><B>Onderwerp:</B> Re:
[TRNSYS-users] Problems with calling EES (Type66a)<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>Joris,<BR> 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.<BR>Kind regards,<BR> David<BR><BR><BR>On 2/20/2011
15:43, Doms Joris wrote:
<BLOCKQUOTE>
<DIV>Dear TRNSYS users,</DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">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;</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">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.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">Thanks on advance</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">Joris Doms</FONT></DIV><BR>
<P align=left><FONT size=2 face=Tahoma><FONT
color=#0000ff></FONT></FONT></P>
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<P></P></DIV><BR><BR>---------- 已转发邮件 ----------<BR>From: 王洋 <<A
href="mailto:wanghongyang1767@gmail.com">wanghongyang1767@gmail.com</A>><BR>To: <A
href="mailto:duffy@tess-inc.com">duffy@tess-inc.com</A><BR>Date: Thu,
24 Feb 2011 15:24:08 +0100<BR>Subject: Re: [TRNSYS-users] RADIATIVE
PART of Heating<BR>
<DIV>Dear Mr. Duffy,</DIV>
<DIV> </DIV>
<DIV> Many
thanks for your reply!</DIV>
<DIV> </DIV>
<DIV> I’m so sorry for
sending multiple identical emails to the TRNSYS users mailing list. Because
I'm very anxious not to get those answers, that's some tasks my professor
gave me, I must finish them these days. So I still have no other way to do
with them after asking other guys, then I sent multiple identical emails to
the TRNSYS users mailing list.</DIV>
<DIV> </DIV>
<DIV> sorry again!</DIV>
<DIV> </DIV>
<DIV> Br.</DIV>
<DIV> </DIV>
<DIV>wang</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>
<BR><BR></DIV>
<DIV class=gmail_quote>2011/2/23 Matt Duffy <SPAN dir=ltr><<A
href="mailto:duffy@tess-inc.com"
target=_blank>duffy@tess-inc.com</A>></SPAN><BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote><BR><BR>Dear Wang,<BR><BR><BR>The following document has
information about radiator/convector.<BR><BR><FONT size=3>
<P>ASHRAE, 2004 ASHRAE Handbook: HVAC Systems and Equipment, ASHRAE,
Atlanta</P></FONT>Perhaps a basic heat transfer text, such as Incropera
and Dewitt, may have information as well.<BR><BR>Best regards,
<DIV>
<DIV></DIV>
<DIV><BR><BR>Matt Duffy<BR><BR><BR><BR><BR>
<DIV style="BACKGROUND-REPEAT: repeat-x"><STRONG>----- Original Message
-----</STRONG><BR><STRONG>From:</STRONG> "王洋" <<A
href="mailto:wanghongyang1767@gmail.com"
target=_blank>wanghongyang1767@gmail.com</A>>
<BR><STRONG>Sent:</STRONG> Wed, February 23, 2011
15:22<BR><STRONG>Subject:</STRONG> [TRNSYS-users] RADIATIVE PART of
Heating<BR><BR>
<DIV>Dear all,<BR><BR>I want to make sure the exact value about RADIATIVE
PART in the TRNBUILD Heating option. e.g. What's the exact RADIATIVE PART
or Convection Part value of the wall heating and radiator and
convector?<BR><BR>Or Please introduce me some TRNSYS references and
literature about RADIATIVE PART or Convection Part value of the wall
heating and radiator and convector etc.<BR><BR><BR><BR><BR>Please
introduce me some best English books about the heating(radiator,
convector, Wandheizung and floor heating) operating or working
fundamentals etc., walls' thermal energy storage and materials' pyhsics
property etc., the infiltration and ventilation etc. and our this research
topic's literatures we must read.<BR><BR><BR>many
thanks!<BR><BR>Br.<BR><BR>wang<BR><BR><BR>
<DIV class=gmail_quote>在 2011年2月23日 上午11:01，王洋 <SPAN dir=ltr><<A
href="mailto:wanghongyang1767@gmail.com"
target=_blank>wanghongyang1767@gmail.com</A>></SPAN>写道：<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>Dear all,<BR><BR>I want to make sure the exact value
about RADIATIVE PART in the TRNBUILD Heating option. e.g. What's the
exact RADIATIVE PART or Convection Part value of the wall heating and
radiator and convector?<BR><BR>Or Please introduce me some TRNSYS
references and literature about RADIATIVE PART or Convection Part value
of the wall heating and radiator and convector
etc.<BR><BR><BR><BR><BR>Please introduce me some best English books
about the heating(radiator, convector, Wandheizung and floor heating)
operating or working fundamentals etc., walls' thermal energy storage
and materials' pyhsics property etc., the infiltration and ventilation
etc. and our this research topic's literatures we must
read.<BR><BR><BR>many thanks!<BR><BR>Br.<BR><BR>wang<BR><BR>
<DIV class=gmail_quote>2011/2/23 <SPAN dir=ltr><<A
href="mailto:trnsys-users-request@cae.wisc.edu"
target=_blank>trnsys-users-request@cae.wisc.edu</A>></SPAN><BR>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0pt 0pt 0pt 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>Send TRNSYS-users mailing list submissions
to<BR> <A
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target=_blank>trnsys-users-owner@cae.wisc.edu</A><BR><BR>When
replying, please edit your Subject line so it is more specific<BR>than
"Re: Contents of TRNSYS-users digest..."<BR><BR>Today's
Topics:<BR><BR> 1. Re: Problems with calling EES (Type66a)
(David BRADLEY)<BR> 2. Re: Type66 EES and TRNSYS (David
BRADLEY)<BR> 3. Re: acceptable temperature range (Fred
Betz)<BR><BR><BR>---------- 已转发邮件 ----------<BR>From: David
BRADLEY <<A href="mailto:d.bradley@tess-inc.com"
target=_blank>d.bradley@tess-inc.com</A>><BR>To: Doms Joris
<<A href="mailto:joris.doms@vito.be"
target=_blank>joris.doms@vito.be</A>><BR>Date: Tue, 22 Feb
2011 16:40:04 -0600<BR>Subject: Re: [TRNSYS-users] Problems with
calling EES (Type66a)<BR>
<DIV bgcolor="#ffffff" text="#000000">Joris,<BR> 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.<BR>Kind
regards,<BR> David<BR><BR><BR>On 2/20/2011 15:43, Doms Joris
wrote:
<BLOCKQUOTE type="cite">
<DIV>Dear TRNSYS users,</DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">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;</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">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.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">Thanks on advance</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="times new roman">Joris Doms</FONT></DIV><BR>
<P align=left><FONT size=2 face=Tahoma><FONT color=#0000ff>
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<P> </P><PRE><FIELDSET></FIELDSET>
_______________________________________________
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</PRE>
<P> </P>
<P></P>
<P></P></BLOCKQUOTE><BR><PRE cols="72">--
***************************
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
<A href="mailto:d.bradley@tess-inc.com" target=_blank>d.bradley@tess-inc.com</A>
<A href="http://www.tess-inc.com/" target=_blank>http://www.tess-inc.com</A>
<A href="http://www.trnsys.com/" target=_blank>http://www.trnsys.com</A></PRE></DIV><BR><BR>----------
已转发邮件 ----------<BR>From: David BRADLEY <<A
href="mailto:d.bradley@tess-inc.com"
target=_blank>d.bradley@tess-inc.com</A>><BR>To: Simon
Binnemans <<A href="mailto:simon.binnemans@khk.be"
target=_blank>simon.binnemans@khk.be</A>><BR>Date: Tue, 22 Feb
2011 16:57:40 -0600<BR>Subject: Re: [TRNSYS-users] Type66 EES and
TRNSYS<BR>Simon,<BR>If you would be willing to send me your TRNSYS
project and EES code, I could probably debug it and find out why
changing the size of szdelivertext isn't solving it. It may be that
there is a limitation on the EES side of the connection as well;
please don't quote me on that though until I get to look at
it!<BR>Kind regards,<BR>David<BR><BR><BR>On 2/16/2011 04:36, Simon
Binnemans wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(204,204,204) 1px solid; MARGIN: 0pt 0pt 0pt 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>Dear all,<BR><BR>I am currently using the Type66
object for exchanging data between TRNSYS and ees.<BR>At first it
worked very well, but when I want to receive more than 34 inputs
from ees, TRNSYS alway generates an error: "Error converting
clipboard data to numbers."<BR>After searching for this problem, I
found that the problem was situated in the Type66 component, which
only reads the first 512 characters from the clipboard. The
suggested solution was to modify the value of szdelivertext to a
higher number and recompile it.(<A
href="https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004540.html"
target=_blank>https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004540.html</A>)<BR>I
modified the value of szdelivertext to 40 000 in stead of the
standard 4000, but the result stayed the same.<BR><BR>Can anyone
suggest a solution for this problem?<BR><BR>Best
regards,<BR></BLOCKQUOTE><BR>--
<BR>***************************<BR>David
BRADLEY<BR>Principal<BR>Thermal Energy Systems Specialists, LLC<BR>22
North Carroll Street - suite 370<BR>Madison, WI 53703
USA<BR><BR>P:+1.608.274.2577<BR>F:+1.608.278.1475<BR><A
href="mailto:d.bradley@tess-inc.com"
target=_blank>d.bradley@tess-inc.com</A><BR><BR><A
href="http://www.tess-inc.com/"
target=_blank>http://www.tess-inc.com</A><BR><A
href="http://www.trnsys.com/"
target=_blank>http://www.trnsys.com</A><BR><BR><BR><BR><BR>----------
已转发邮件 ----------<BR>From: Fred Betz <<A
href="mailto:fbetz@aeieng.com"
target=_blank>fbetz@aeieng.com</A>><BR>To: Shahrdad JavidRad
<<A href="mailto:shahrdad@live.de"
target=_blank>shahrdad@live.de</A>>, TRNSYS USERS <<A
href="mailto:trnsys-users@cae.wisc.edu"
target=_blank>trnsys-users@cae.wisc.edu</A>><BR>Date: Tue, 22
Feb 2011 17:42:26 -0600<BR>Subject: Re: [TRNSYS-users] acceptable
temperature range<BR>
<DIV lang=EN-US link="blue" vlink="purple">
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">You’ll probably be
better off using a simple feedback controller rather than an equation
block because you can get frequent starts and stops or non-convergence
warnings. </SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">Also, that’s a pretty
large temperature range to operate over. Are you driving an absorption
chiller with those temperatures? </SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">You might be better off
controlling a variable speed pump to maintain your temperature range
rather than shutting the pump off when the temperature exceeds 80C. If
you shut off the pump when the temperature is over 80C, you risk
exceeding the stagnation temperature of your panels in the real world.
</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">There is a solar
thermal panel in the TESS libraries that has a built in controller
that has an output for a variable speed pump that works really well.
</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">Good luck!</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt">Fred</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<DIV>
<TABLE style="WIDTH: 355.5pt" border=0 cellPadding=0 width=474>
<TBODY>
<TR>
<TD
style="PADDING-BOTTOM: 0.75pt; PADDING-LEFT: 0.75pt; WIDTH: 125.25pt; PADDING-RIGHT: 0.75pt; PADDING-TOP: 0.75pt"
vAlign=top width=167>
<P class=MsoNormal><B><SPAN
style="TEXT-TRANSFORM: uppercase; COLOR: rgb(102,0,0); FONT-SIZE: 10pt">Fred
Betz</SPAN></B><B><SPAN
style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt">
</SPAN></B><SPAN
style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt">PhD., LEED AP
<BR></SPAN><SPAN
style="TEXT-TRANSFORM: uppercase; COLOR: rgb(51,51,51); FONT-SIZE: 10pt">Sustainable
Systems Analyst</SPAN></P></TD>
<TD
style="PADDING-BOTTOM: 0.75pt; PADDING-LEFT: 0.75pt; WIDTH: 7.5pt; PADDING-RIGHT: 0.75pt; PADDING-TOP: 0.75pt"
vAlign=top width=10>
<P class=MsoNormal><SPAN
style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"></SPAN> </P></TD>
<TD
style="PADDING-BOTTOM: 0.75pt; PADDING-LEFT: 0.75pt; WIDTH: 212.25pt; PADDING-RIGHT: 0.75pt; PADDING-TOP: 0.75pt"
vAlign=top width=283>
<P class=MsoNormal><B><SPAN
style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt">AEI</SPAN></B><SPAN
style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"> | AFFILIATED
ENGINEERS, INC. <BR>5802 Research Park Blvd. | Madison, WI
53719<BR><BR></SPAN><SPAN
style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt">P: 608.236.1175 | F:
608.238.2614</SPAN><SPAN
style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt"> <BR></SPAN><SPAN
style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt"><A
href="mailto:fbetz@aeieng.com" target=_blank><SPAN
style="COLOR: rgb(102,0,0); TEXT-DECORATION: none">fbetz@aeieng.com</SPAN></A>
| </SPAN><B><SPAN
style="COLOR: rgb(102,0,0); FONT-SIZE: 9pt"><A
href="http://www.aeieng.com/" target=_blank><SPAN
style="COLOR: rgb(102,0,0); TEXT-DECORATION: none">www.aeieng.com</SPAN></A></SPAN></B><SPAN
style="COLOR: rgb(51,51,51); FONT-SIZE: 9pt">
</SPAN></P></TD></TR></TBODY></TABLE>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P></DIV>
<P class=MsoNormal><SPAN
style="COLOR: rgb(31,73,125); FONT-SIZE: 11pt"></SPAN> </P>
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: rgb(181,196,223) 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt">
Shahrdad JavidRad [mailto:<A href="mailto:shahrdad@live.de"
target=_blank>shahrdad@live.de</A>] <BR><B>Sent:</B> Tuesday, February
22, 2011 12:11 PM<BR><B>To:</B> TRNSYS USERS<BR><B>Subject:</B>
[TRNSYS-users] acceptable temperature range</SPAN></P></DIV></DIV>
<P class=MsoNormal> </P>
<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><SPAN
style="FONT-SIZE: 10pt"><BR>Hello,<BR><BR>in my solar thermal system
</SPAN><SPAN><SPAN style="FONT-SIZE: 10pt"
lang=EN>I</SPAN></SPAN><SPAN style="FONT-SIZE: 10pt" lang=EN>
<SPAN>want to</SPAN> <SPAN>define</SPAN> <SPAN>an</SPAN>
<SPAN>acceptable</SPAN> <SPAN>interval</SPAN> <SPAN>for</SPAN>
<SPAN>the collector</SPAN> <SPAN>outlet</SPAN>
<SPAN>temperature</SPAN> <SPAN>[65-80°C]</SPAN> by giving an output
signal=1 for the pump in the collector loop. For any other
temperatures out of this range </SPAN><SPAN
style="FONT-SIZE: 10pt">the signal should be=0<BR></SPAN><SPAN
style="FONT-SIZE: 10pt" lang=EN><BR><SPAN>For</SPAN><SPAN>
</SPAN><SPAN>this</SPAN><SPAN> </SPAN><SPAN>purpose I am using an
Equation block!! (Is there any controller, that is able to do
it?)</SPAN></SPAN><SPAN style="FONT-SIZE: 10pt"><BR><BR>I have defined
these variables as:<BR><BR>T_min=65<BR>T_max=80<BR>T_out= collector
outlet
temperature<BR><BR>Signal=AND(GT(T_out,T_min),LT(T_out,T_max))*1+(1-AND(GT(T_out,T_min),LT(T_out,T_max)))*0<BR><BR>I
have plotted the signal. It works fine but I am experiencing a very
long simulation time. More than 15 minutes just for a week.<BR><BR>Is
there any
idea?<BR><BR>Thanks,<BR>Shahrdad<BR><BR></SPAN></P></DIV></DIV><BR>_______________________________________________<BR>TRNSYS-users
mailing list<BR><A href="mailto:TRNSYS-users@cae.wisc.edu"
target=_blank>TRNSYS-users@cae.wisc.edu</A><BR><A
href="https://mailman.cae.wisc.edu/listinfo/trnsys-users"
target=_blank>https://mailman.cae.wisc.edu/listinfo/trnsys-users</A><BR><BR></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></DIV><BR>
<HR SIZE=1 noShade>
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</PRE></DIV></DIV></DIV></DIV></BLOCKQUOTE></DIV><BR><BR>_______________________________________________<BR>TRNSYS-users
mailing list<BR><A
href="mailto:TRNSYS-users@cae.wisc.edu">TRNSYS-users@cae.wisc.edu</A><BR><A
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