[TRNSYS-users] infiltration rate

David BRADLEY d.bradley at tess-inc.com
Tue Feb 22 07:42:59 PST 2011


Wang,
   TRNBuild offers an output (NTYPE96) which is the air change rate of 
infiltration. TRNBuild also offers an output for the energy gain (or 
loss) from infiltration (NTYPE4)
Regards,
  David


On 2/21/2011 15:16, 王洋 wrote:
> Dear all,
>
>
> I want to compare the test room infiltration rate of actual 
> measurement with by TRNSYS simulation. Maybe as you know, in the 
> TRNFlow manual: there it is explained that "As soon as TRNFLOW is 
> turned on, (...) in the simulation the defined infiltrations, 
> ventilations and couplings will be replaced with the calculated air 
> flows."
> I defined CO2% as 1000 ppm in TRNFlow, then I want to observe CO2%'s 
> reducing curve when infiltration rate is 0.5276 1/h (I measured the 
> value in the test room), so I defined the infiltration rate as 0.5276 
> 1/h in TRNBUILD. But when I used TRNFLOW, the defined infiltration 
> rate as 0.5276 1/h in TRNBUILD was replaced. And 1000 ppm keeps constant.
>
> Please tell me  how to get  the infiltration rate curve using 
> TRNSYS/TRNFLOW or how to explain this ?
>
> Many thanks!
>
> br
>
> wang
>
>
>
> 在 2011年2月21日 下午12:07,王洋 <wanghongyang1767 at gmail.com 
> <mailto:wanghongyang1767 at gmail.com>>写 道:
>
>     Dear all,
>
>
>     I want to compare the test room infiltration rate of actual
>     measurement with by TRNSYS simulation. Maybe as you know, in the
>     TRNFlow manual: there it is explained that "As soon as TRNFLOW is
>     turned on, (...) in the simulation the defined infiltrations,
>     ventilations and couplings will be replaced with the calculated
>     air flows."
>     I defined CO2% as 1000 ppm in TRNFlow, then I want to observe
>     CO2%'s reducing curve when infiltration rate is 0.5276 1/h (I
>     measured the value in the test room), so I defined the
>     infiltration rate as 0.5276 1/h in TRNBUILD. But when I used
>     TRNFLOW, the defined infiltration rate as 0.5276 1/h in TRNBUILD
>     was replaced. And 1000 ppm keeps constant.
>
>     Please tell me  how to get  the infiltration rate curve using
>     TRNSYS/TRNFLOW or how to explain this ?
>
>     Many thanks!
>
>     br
>
>     wang
>
>     2011/2/21 <trnsys-users-request at cae.wisc.edu
>     <mailto:trnsys-users-request at cae.wisc.edu>>
>
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>         Today's Topics:
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>           1. Problems with calling EES (Type66a) (Doms Joris)
>           2. wall definition (davide disco)
>
>
>         ---------- 已转发邮件 ----------
>         From: Doms Joris <joris.doms at vito.be <mailto:joris.doms at vito.be>>
>         To: "trnsys-users at cae.wisc.edu
>         <mailto:trnsys-users at cae.wisc.edu>" <trnsys-users at cae.wisc.edu
>         <mailto:trnsys-users at cae.wisc.edu>>
>         Date: Sun, 20 Feb 2011 22:43:08 +0100
>         Subject: [TRNSYS-users] Problems with calling EES (Type66a)
>         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
>
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>         ---------- 已转发邮件 ----------
>         From: davide disco <chester_83 at hotmail.it
>         <mailto:chester_83 at hotmail.it>>
>         To: <trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>>
>         Date: Mon, 21 Feb 2011 11:57:59 +0100
>         Subject: [TRNSYS-users] wall definition
>         Dear all,
>         when entering data in Trnbuild I have to describe the walls of
>         the zone: if, looking at the plant of the building, the
>         building has more than a wall south oriented for example (wall
>         to the left in the plant) I should enter in Trnbuild each
>         section of wall facing south or I should enter a unique wall
>         that is the sum of all sections of wall facing south?
>         Thanks in advace.
>         Best regards
>
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-- 
***************************
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 at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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