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Re: [TRNSYS-users] Type 56 net energy balance from window to zone



Thank you Jakob for thinking of it again.

 

Actually I think you were partly right too: there is something missing in my balance i.e. radiative heat & internal radiative gains absorbed by the inside surface.

So I cannot figure out how to account for this! If you have any further thoughts about it…

 

(I forgot to post on the users list before: I'll reply to all now.)

 

Best

--

Antoine Gautier

Solamen

+33 6 58 24 02 60

antoine.gautier@solamen.fr

 

De : hotline [mailto:hotline@Transsolar.com]
Envoyé : mardi 30 mai 2017 10:28
À : Antoine Gautier <antoine.gautier@solamen.fr>
Objet : AW: [TRNSYS-users] Type 56 net energy balance from window to zone

 

Dear Antoine,

 

thinking of it again I have to confess that you were right in the first place sorry for that

 

Best

Jakob

 

__________________________________________________________________________________________________

 

Jakob Merk M.Sc.

 

Transsolar Energietechnik GmbH

Curiestraße 2

70563 Stuttgart

Telefon: +49 711 67976-0
Fax:        +49 711 67976-11
Email:    merk@transsolar.com
http://www.transsolar.com

Transsolar: KlimaEngineering- Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäuden

Stuttgart – München – New York – Paris

Geschäftsführer :Diplom-Ingenieur Matthias Schuler, Diplom-Ingenieur Thomas Auer, Diplom-Physiker Stefan Holst, Diplom-Betriebswirt Dieter Schnelle

Eingetragen beim Amtsgericht Stuttgart HRB 23347,

Steuernummer: 99073/00911,USt-IdNr.: DE 152272639

 

 

 

Von: Antoine Gautier [mailto:antoine.gautier@solamen.fr]
Gesendet: 29 May 2017 12:07
An: hotline <hotline@Transsolar.com>
Betreff: RE: [TRNSYS-users] Type 56 net energy balance from window to zone

 

Thanks Jakob!

 

I thought about QABSI (with the analogy to a wall).

The problem is from what I understand QABSI includes absorbed solar gain at inside surface: part of it being reemitted inwards so included in QCOMI.

Basically for a single pane glazing this part should correspond to QSHFPR so this variable could be subtracted to QCOMI and not counted twice.

However for a multiple pane glazing this part should be lower than QSHFPR which also accounts for inwards reemission of absorbed radiation by the outer panes.

What if not accounted for in QSTRNS + QCOMI – QSOUT is only radiative heat & internal radiative gains absorbed by the inside surface right?

 

--

Antoine Gautier

Solamen

+33 6 58 24 02 60

antoine.gautier@solamen.fr

 

De : hotline [mailto:hotline@Transsolar.com]
Envoyé : lundi 29 mai 2017 11:35
À : Antoine Gautier <antoine.gautier@solamen.fr>; TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org>
Objet : AW: [TRNSYS-users] Type 56 net energy balance from window to zone

 

Dear Antoine,

 

Sounds promising but dont forget QABSI

 

QSTRNS + QCOMI – QSOUT – QABSI

 

Best
Jakob

 

__________________________________________________________________________________________________

 

Jakob Merk M.Sc.

 

Transsolar Energietechnik GmbH

Transsolar: KlimaEngineering- Technologien für energieeffizientes Bauen und Nutzerkomfort in Gebäuden

Stuttgart – München – New York – Paris

Geschäftsführer :Diplom-Ingenieur Matthias Schuler, Diplom-Ingenieur Thomas Auer, Diplom-Physiker Stefan Holst, Diplom-Betriebswirt Dieter Schnelle

Eingetragen beim Amtsgericht Stuttgart HRB 23347,

Steuernummer: 99073/00911,USt-IdNr.: DE 152272639

 

 

 

Von: TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] Im Auftrag von Antoine Gautier via TRNSYS-users
Gesendet: 29 May 2017 09:12
An: 'TRNSYS users mailing list at OneBuilding.org' <trnsys-users@lists.onebuilding.org>
Betreff: [TRNSYS-users] Type 56 net energy balance from window to zone

 

Hi

 

I am trying to compute the net energy balance from window (glazing + frame, no shading device) to zone using Type 56.

My best guess would be: QSTRNS + QCOMI – QSOUT.

 

1) Does that seem correct to you?

 

2) Is there a way to further split QCOMI between convective and longwave radiation parts?

 

Thanks a lot for your help

--

Antoine Gautier

Solamen

+33 6 58 24 02 60

antoine.gautier@solamen.fr