[TRNSYS-users] TRNFOW changes airnode to constant pressure node

Belleri Annamaria annamaria.belleri at eurac.edu
Tue May 13 03:14:41 PDT 2014

The names of the thermal airnodes are: F2_SWNW_CMA, F2_SW_CMA and F2_NW_CMA

The ID links where it happens are:
ID 4 from node F1_SW_CMA to node F2_SWNW_CMA, from height 2.9 to height 0
ID 5 from node F2_SWNW_CMA to node F2_SW_CMA, from height 5.45 to height 0
ID 6 from node F2_SW_CMA to exterior node EN_SW, from height 0 to height 10.8

ID 10 from node F1_NE_CMA2 to node F2_SWNW_CMA, from height 2.9 to height 0
ID 11 from node F2_SWNW_CMA to node F2_NW_CMA, from height 5.45 to height 0
ID 12 from node F2_NW_CMA to exterior node EN_NW, from height 0 to height 10.8

Please find attached the .b17 file.

Thank you

From: trnsys-users-bounces at cae.wisc.edu [mailto:trnsys-users-bounces at cae.wisc.edu] On Behalf Of hotline
Sent: Tuesday, May 13, 2014 11:47 AM
To: TRNSYS users mailing list at the Solar Energy Lab, UW-Madison
Subject: Re: [TRNSYS-users] TRNFOW changes airnode to constant pressure node

Dear Annamaria,

What are the names of the thermal airnodes/zones?
Do the name of the modified airnode has "PA" in the name?
Can you send me the b17 and the link ID where this happens.

Best regards,

Transsolar Software Team


TRNSYS Userday 2014:

This years TRNSYS Userday will be taking place on 23rd May in Stuttgart. There are still free spots and we are looking forward to welcoming you here in Stuttgart.

The TRNSYS Userday is an annual event where TRNSYS Users meet and exchange ideas and experiences. Developers of TRNSYS will be present and happy to discuss any problems and new ideas.

Presentations by TRNSYS users about their TRNSYS experiences, projects or developments will make up the main program of the userday.


English TRNSYS Course May 2014:

We provide TRNSYS courses in English from May 13th until 16th in Stuttgart, Germany. For further information follow this Link http://www.transsolar.com/__software/docs/trnsys/trnsys_schulung_en.htm

If you are interested to attend to the courses, please register by an E-Mail to hotline at transsolar.com<mailto:hotline at transsolar.com> with your name and the name of your company or institute.


Von: trnsys-users-bounces at cae.wisc.edu<mailto:trnsys-users-bounces at cae.wisc.edu> [mailto:trnsys-users-bounces at cae.wisc.edu] Im Auftrag von Belleri Annamaria
Gesendet: Dienstag, 13. Mai 2014 10:15
An: trnsys-users at cae.wisc.edu<mailto:trnsys-users at cae.wisc.edu>
Betreff: [TRNSYS-users] TRNFOW changes airnode to constant pressure node

Dear TRNSYS users,

I am using TRNFLOW to model airflows between zones. I have horizontal openings to connect ground floor zones to first floor zones so I set the own height factor of the large opening to 0.
When I save the bui file, the links to the thermal airnode are replaced with constant pressure nodes, with 0 Pa pressure and the Trnbuild stops working.

Why is this happening?

Thanks in advance,

_ _

Annamaria Belleri
Institute for Renewable Energy

EURAC research
Via Zuegg 11, I-39100 Bolzano
t +39 0471 055 658
f +39 0471 055 039
m +39 333 8569899
annamaria.belleri at eurac.edu<mailto:petra.muster at eurac.edu>

EURAC research
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Viale Druso 1, I-39100 Bolzano

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