Re: [TRNSYS-users] Link between Window type 35a and multi zone building type 56a

Dear Oussama,

I’m not sure how complicated your window model, but you are correct that there should be a “dummy” surface in Type 56.

Assuming that your window could be defined by

Surface-to-Surface thermal resistance Rc
Solar transmission
Secondary heat flux

You have 2 options:

The dummy surface is defined by wall with one massless layer (simple method).
- the layer has the resistance Rc
- The gains (Solar transmission + Secondary heat gains) are defined as
internal gains if it is ok that they are area weighted distributed or
as combination of inside wall gains (radiative part) and a convective internal gain (convective part)

The dummy surface is defined by window with a single layer (much more complicated because values need to be edited manul)
- a fixed transmission, no absorption and a surface-to-surface conductance
- the secondary heat flux is defined as
internal gains if it is ok that they are area weighted distributed or
as combination of inside wall gains (radiative part) and a convective internal gain (convective part)

I hope this information helps.

Marion

Von: TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] Im Auftrag von Oussama Ibrahim via TRNSYS-users
Gesendet: Mittwoch, 4. Juli 2018 08:13
An: TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org>
Cc: Oussama Ibrahim <oibrahimul@hotmail.com>
Betreff: Re: [TRNSYS-users] Link between Window type 35a and multi zone building type 56a

Dear Christoph,

I am working with Khaled on this issue.

I am wondering that if we linked the window type 35 to multi-zone building Type 56, how would Type 56 proceed with calculating the energy balance.

How could Type 56 take the area of the window into consideration and subtract the area of the wall from it?

The main objective is to perform parametric study for windows to wall ration (WWR).

Thanks in advance,

Oussama

----
Oussama Ibrahim
Lebanese University
Tel: 961-70-818470
E-mail: oibrahimul@hotmail.com ; oibrahim1984@gmail.com

From: TRNSYS-users <trnsys-users-bounces@lists.onebuilding.org> on behalf of hotline via TRNSYS-users <trnsys-users@lists.onebuilding.org>
Sent: Tuesday, July 3, 2018 10:34 AM
To: TRNSYS users mailing list at OneBuilding.org
Cc: hotline
Subject: Re: [TRNSYS-users] Link between Window type 35a and multi zone building type 56a

Hey,

you just need to define Inputs in TRNBuild and then “Update building bariable list” by right click on TYPE 56 in Studio (please have a look into 5.2.3.3. Inputs in 05-MultizoneBuilding Docu). Then you can connect the window type with type 56.

Best,

Christoph

Von: TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] Im Auftrag von khaled al hussein via TRNSYS-users
Gesendet: Dienstag, 3. Juli 2018 00:48
An: trnsys-users@lists.onebuilding.org
Cc: khaled al hussein <khaled4223hussein@gmail.com>
Betreff: [TRNSYS-users] Link between Window type 35a and multi zone building type 56a

Dear All

could we have a link between Window type 35a and multi zone building type 56a

Best regards