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

hotline hotline at Transsolar.com
Wed May 14 04:14:07 PDT 2014

Dear Annamaria,
you have to rename all the thermal zone nodes beginning with F2_ .
As F2_ is the keyword for a flow controller link type (all flow controller links begin with F2_ ) TRNBUILD cannot handle this name.

In any case you also have to adjust your network: Large Openings have to have the FROM and the TO - node at the same height.

Best regards,
TRANSSOLAR Software team

Von: trnsys-users-bounces at cae.wisc.edu [trnsys-users-bounces at cae.wisc.edu]" im Auftrag von "hotline [hotline at Transsolar.com]
Gesendet: Dienstag, 13. Mai 2014 11:47
Bis: TRNSYS users mailing list at the Solar Energy Lab, UW-Madison
Betreff: 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] Im Auftrag von Belleri Annamaria
Gesendet: Dienstag, 13. Mai 2014 10:15
An: 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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