[TRNSYS-users] questions about Trnflow

[Mariëlle Nuchelmans]

Hi,

It is just a warning. You define two different heights for an airnode: TO-height and FROM height. These two are in your case not equal, so trnflow treats it as a vertical shaft (to overcome the distance). If this is what you want, you can ignore the message. If this isn’t what you want (you’ve got an horizontal link) then you should check the to and from heights. See picture below (from trnflow manual)

[cid:image002.gif at 01CB405A.7BBC8DA0]

Kind regards,

Mariëlle

Van: 王洋 [mailto:wanghongyang1767 at gmail.com]
Verzonden: vrijdag 20 augustus 2010 11:07
Aan: trnsys-users at cae.wisc.edu
Onderwerp: [TRNSYS-users] questions about Trnflow

Hi All,

I run the TRNFlow, the listing file shows as followes: How to deal with them? Many thanks!

***** WARNING ***** UNIT 56 TYPE 56, TIME =   0.000E+00
 COMIS MESSAGE  ***** NOTE *****
 &-NET-LINks:  LinkID=L2  Type=WI_001  FROM(zone AN_001)=1.    m  TO(zone
 EN_001)=0.m  deltaH=-1.m.  ZoneHeight+LinkHeight is different for sides FROM &
 TO, like a vertical shaft.  Is this OK ?


 ***** WARNING ***** UNIT 56 TYPE 56, TIME =   0.000E+00
 COMIS MESSAGE  ***** WARNING *****
 From and To total height of this large opening link are not within 0.1m:
 L2
 ----------------------------------------------------------------


 ***** WARNING ***** UNIT 56 TYPE 56, TIME =   0.000E+00
 COMIS MESSAGE  ***** WARNING *****
 From and To total height of this large opening link are not within 0.1m:
 L4


***** WARNING ***** UNIT 56 TYPE 56, TIME =   1.900E+01
 COMIS MESSAGE  ***** WARNING *****
 Pollutant transport solver : Small timestep
 needed (Tau < 10 sec), but is limited to 1 sec
 ----------------------------------------------------------------

If you know how to do with them,PLEASE tell me! I'm very urgent for them!

Thanks again!

BR.

Andy Wang
2010/8/19 <trnsys-users-request at cae.wisc.edu<mailto:trnsys-users-request at cae.wisc.edu>>
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Today's Topics:

  1. TRNSYS Window Library (Daniel Bergey)


---------- 已转发邮件 ----------
From: Daniel Bergey <daniel at buildingscience.com<mailto:daniel at buildingscience.com>>
To: trnsys-users at cae.wisc.edu<mailto:trnsys-users at cae.wisc.edu>
Date: Thu, 19 Aug 2010 10:29:04 -0500
Subject: [TRNSYS-users] TRNSYS Window Library
I'm putting together a TRNSYS model for research on ventilation and
dehumidification. We have identified the windows we will use in terms of
SHGC and U-value, which of course isn't enough as inputs to Type56.  The library bundled with TRNSYS does not have windows reflecting what we see in residential buildings.

I expect others have run into the same problem.  Does anyone have window inputs that fit any of the following examples?

U-value (IP)   SHGC
0.4             0.4, 0.35, 0.3
0.35            0.4, 0.35, 0.3
0.3             0.4, 0.35, 0.3, 0.25
0.25            0.35, 0.3, 0.25

Thank you,
Daniel
--
Daniel Bergey
Building Science Corporation
30 Forest Street
Somerville, MA  02143
978-589-5100 x 5277


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