[TRNSYS-users] selective glazin windows

[hotline]

Karol,

The modelling selective window in TRNSYS works great.
Type 56 has implemented a 2-band model (visual and non-visual band), but for special glazing you would need you need a 3-band.
However, if solar radiation is passing through one selective glazing (e.g. on external window without reflecting internal shading) the results are fine even if there is no 3-band model. (see attachment referring to  TRNSYS 18).  If solar radiation is passing through more than one selective glazing "in series", the results aren't correct.

The workflow would be to generate the data with in Berkley Lab WINDOW.  (see section 09-Tutorials.pdf)
I'm not sure if the single layers of the glazing system you have in mind are available in glazing data base of Berkley Lab Window.
If not you would need to apply Berkley Lab OPTICS to create the single layer data and import in Berkley Lab Window.

I always suggest to use TRNSYS 18 because new spectral standard files of TRNSYS 18 (TRNSYS18.std and TRNSYS18_evis.ssp) are used for generating window with data Berkley Lab Window. In these files, the integral characteristic of transmittance and reflectance for the visible range is based on the energy spectrum required by the 2 band solar radiation model of Type 56. For most other standard files available for the program Window, these integral characteristics for the visible wave lengths do not represent the entire visible range, owing to spectral sensitivity of the human eye.

Kind regards,

Marion

[cid:image001.png at 01D90A48.9278E5A0]

Transsolar Software Team
hotline at transsolar.com

Transsolar
Stuttgart | Munich | Paris | New York

Transsolar Energietechnik GmbH | Curiestrasse 2 | 70563 Stuttgart | Germany
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Von: TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org> Im Auftrag von karol.bandurski--- via TRNSYS-users
Gesendet: Freitag, 25. November 2022 07:29
An: 'TRNSYS users mailing list at OneBuilding.org' <trnsys-users at lists.onebuilding.org>
Cc: karol.bandurski at put.poznan.pl
Betreff: Re: [TRNSYS-users] selective glazin windows

Dear All,

Do some of you have experience with modelling selective glazing (widows) in TRNSYS18 or 17?

Best,
Karol

From: karol.bandurski at put.poznan.pl<mailto:karol.bandurski at put.poznan.pl> <karol.bandurski at put.poznan.pl<mailto:karol.bandurski at put.poznan.pl>>
Sent: Wednesday, November 16, 2022 10:38 AM
To: 'TRNSYS users mailing list at OneBuilding.org' <trnsys-users at lists.onebuilding.org<mailto:trnsys-users at lists.onebuilding.org>>
Subject: selective glazin windows

Dear Exerts,

I would like to model building with selective glazing (widows): diffusion of UV and partially reflection of IR.

  1.  Is such glazing in Library?
  2.  or I need to model it in https://windows.lbl.gov/software/window?
  3.  or maybe I can modify manually some windows from library to get this properties?

Is there some difference between TRNSYS 17 an 18 in this issues?

Kind regards,
Karol Bandurski

---------------------------------------------------------------------------
Karol BANDURSKI Ph.D, Assistant Professor
Faculty of Environmental and Energy Engineering
Division of Heating, Air Conditioning and Air Protection
Poznan University of Technology
https://www.researchgate.net/profile/Karol_Bandurski
***
dr inż. Karol BANDURSKI, Adiunkt
Wydział Inżynierii Środowiska i Energetyki
Zakład Ogrzewnictwa, Klimatyzacji i Ochrony Powietrza
Politechnika Poznańska

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