[TRNSYS-users] Window Data

3 posts / 0 new
Last post

Dear TRNSYS-Users,

i have question about the window data in Trnbuild. I used a glazing from the WinID-Lib and i get 2 warning messages in the List-File:

A
Message : winlib reader: Incorrect visual transmission values encountered in Window-ID 4101. for an angle of 0 ?.
Incorrect value 0.625 will be limited to the possible physically maximum 0.575! Please check your window data!

B
Message : winlib reader: incorrect selectivity of visual+solar transmission caused a negative value for nonvisual
Transmission Tra_ang_nonvis = -0.044 for Window-ID 4101 at an angle of 0 ? Tra_ang_nonvis is set to 0 for this angle

Does anybody know how to fix this ?

Best regards
Sascha Heinze

Heinze's picture
Offline
Joined: 2016-04-05
Reputation: 0

Sascha,

this data set was generated without spectral data at time where a
1-band window model existed in TRNSYS only.

Type 56 includes now 2-band model and old window IDs can produce this
error due to the missing spectral data.

The window ID remained in the library for backwards compatibility.

The best solution is to select a different window.

Regards,

Marion

Dipl.-Ing. Marion Hiller
TRANSSOLAR: KlimaEngineering - Technologien f?r energieeffizientes Bauen
und Nutzerkomfort in Geb?ude
Munich - New York - Stuttgart + 49.711.67976.0

Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart
Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.:
DE152272639

Gesch?ftsf?hrer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer,
Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher

_____

Von: Heinze [mailto:heinze at ingweber.de]
Gesendet: Mittwoch, 13. Juni 2012 10:24
An: trnsys-users at cae.wisc.edu
Betreff: [TRNSYS-users] Window Data

Dear TRNSYS-Users,

i have question about the window data in Trnbuild. I used a glazing from
the WinID-Lib and i get 2 warning messages in the List-File:

A

Message : winlib reader: Incorrect visual transmission
values encountered in Window-ID 4101. for an angle of 0 ?.

Incorrect value 0.625 will be limited to the possible physically
maximum 0.575! Please check your window data!

B

Message : winlib reader: incorrect selectivity of
visual+solar transmission caused a negative value for nonvisual

Transmission Tra_ang_nonvis = -0.044 for Window-ID 4101 at an
angle of 0 ? Tra_ang_nonvis is set to 0 for this angle

Does anybody know how to fix this ?

Best regards

Sascha Heinze

Marion Hiller's picture
Offline
Joined: 2016-04-05
Reputation: 0

Dear Marion, thank you for your quick reply.
Now i?ve tried to make my own window with the Window software from LBL.
I?ve have read on the Transsolar homepage that the calculated values has to be imported in the library manually.
I?ve found almost all the needed data in the window software except the following block (copy from another window):

Overall and Center of Glass Ig U-values (W/m2-C)
Outdoor Temperature -17.8 C 15.6 C 26.7 C 37.8 C
Solar WdSpd hcout hrout hin
(W/m2) (m/s) (W/m2-C)
0 0.00 12.25 3.20 7.17 0.63 0.63 0.65 0.65 0.67 0.67 0.69 0.69
0 6.71 25.47 3.19 7.18 0.64 0.64 0.66 0.66 0.68 0.68 0.71 0.71
783 0.00 12.25 3.55 8.29 0.72 0.72 0.74 0.74 0.77 0.77 0.79 0.79
783 6.71 25.47 3.38 8.21 0.74 0.74 0.75 0.75 0.77 0.77 0.79 0.79

Where can i find this in the Window software or do i need to calculate the U-Values in my own?

Best regards

Sascha Heinze

Von: Marion Hiller [mailto:hiller at transsolar.com]
Gesendet: Mittwoch, 13. Juni 2012 12:44
An: Heinze
Cc: trnsys-users
Betreff: AW: [TRNSYS-users] Window Data

Sascha,

this data set was generated without spectral data at time where a 1-band window model existed in TRNSYS only.
Type 56 includes now 2-band model and old window IDs can produce this error due to the missing spectral data.
The window ID remained in the library for backwards compatibility.

The best solution is to select a different window.

Regards,

Marion

Dipl.-Ing. Marion Hiller
TRANSSOLAR: KlimaEngineering - Technologien f?r energieeffizientes Bauen und Nutzerkomfort in Geb?ude
Munich - New York - Stuttgart + 49.711.67976.0

Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart
Amtsgericht Stuttgart - HRB 23347, Steuernummer 99073/00911, USt-IdNr.: DE152272639
Gesch?ftsf?hrer: Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst, Prof. Dipl.-Ing. Bleicher

________________________________

Von: Heinze [mailto:heinze at ingweber.de]
Gesendet: Mittwoch, 13. Juni 2012 10:24
An: trnsys-users at cae.wisc.edu
Betreff: [TRNSYS-users] Window Data

Dear TRNSYS-Users,

i have question about the window data in Trnbuild. I used a glazing from the WinID-Lib and i get 2 warning messages in the List-File:

A
Message : winlib reader: Incorrect visual transmission values encountered in Window-ID 4101. for an angle of 0 ?.
Incorrect value 0.625 will be limited to the possible physically maximum 0.575! Please check your window data!

B
Message : winlib reader: incorrect selectivity of visual+solar transmission caused a negative value for nonvisual
Transmission Tra_ang_nonvis = -0.044 for Window-ID 4101 at an angle of 0 ? Tra_ang_nonvis is set to 0 for this angle

Does anybody know how to fix this ?

Best regards

Sascha Heinze

Heinze's picture
Offline
Joined: 2016-04-05
Reputation: 0