[TRNSYS-users] TRNSYS 3 D model and 2 D model

Thu Nov 29 00:34:55 PST 2018

Dear Christoph,

Many thanks for your response.

1) Following your email, seen from the figure 1 below, which connections
need we make in between? is it enough just connecting AAZM of Equ with
Input 6 AAZM of Type 56?

2) Still for the same model, I compared 3D and 2D models with the same
settings (Theat = 22 C, Tcool = 28 C) in TRNBuild. I found annual Qheat of
2D model (69272 kWh) is very similar to 3D model (68750 kWh). But, annual
Qcool of 2D model (134314 kWh) is far larger even twice as 3D model (68083
kWh). It is very weird for them. Could you please explain that? Or which
one should be correct/should we believe?

Many thanks
Br.

Yang

[image: image.png]Figure 1

hotline <hotline at transsolar.com> 于2018年11月28日周三 下午6:38写道：

> Dear Wang Yang,
>
>
>
> the difference is that in “2D-model” you used the external calculation of
> radiation data and in “3D-model” you used the internal calculation.
>
> The option “Internal calculation of radiation data” reduces the required
> input data from the weather data component significantly. To use this
> feature only the solar zenith (Input 5) has to be connected to the weather
> data component Type 15, Type16, Type99.
>
> If the option “external calculation of radiation data” is selected, three
> inputs of incident radiation to the Type 56 Trnsys component will be
> required. This is generally provided by the weather component.
>
> The internal as well as the external calculation of radiation data are
> using the same radiation calculation routine from kernel.
>
> The orientation named H_0_0 is automatically recognized as the horizontal
> radiation. If this orientation doesn’t exist, no diffuse geometric shading
> and daylight calculation is performed.
>
>
>
> For more Information, please have a look into the …
> \Documentation\05-MultizoneBuilding.pdf  -> The Project Dialog Box
>
>
>
> Best,
>
> Christoph
>
>
>
> *Von:* WANG Yang <wanghongyang1767 at gmail.com>
> *Gesendet:* Dienstag, 27. November 2018 08:53
> *An:* trnsys-users at lists.onebuilding.org; hotline <hotline at Transsolar.com>
> *Betreff:* Re: TRNSYS-users Digest, Vol 167, Issue 22
>
>
>
> Dear Madam or Sir,
>
>
>
> I hope all is well.
>
>
>
> I have the new questions between old 2D simulation and current 3D
> simulation (TRNSYS3D):
>
>
>
> 1) after I imported *idf file to simulation studio, the link between
> Radiation Equation and Type56 is lack of many inputs and outputs, see below
> pictures. Furthermore, I cannot also Define new inputs from TRNBuild e.g.
> IT N 180 90, IT S 0 90 etc. Thus, I cannot use TRNSYS 3D model to
> repeat/simulate my previous project.
>
> How to deal with this problem? Super thanks
>
>
>
> Br.
>
>
>
> Yang
>
>
>
> [image: image.png] 2D model
>
> [image: image.png]3D model
>
> [image: image.png]TRNBuild Settings for Inputs
>
>
>
> <trnsys-users-request at lists.onebuilding.org> 于2018年11月24日周六 上午5:22写道：
>
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> Today's Topics:
>
>    1. Re: QTSABS vs QSOLTR (Karol Bandurski)
>
>
>
> ---------- Forwarded message ----------
> From: Karol Bandurski <karol.bandurski at put.poznan.pl>
> To: "'hotline'" <hotline at transsolar.com>, "'TRNSYS users mailing list at
> OneBuilding.org'" <trnsys-users at lists.onebuilding.org>
> Cc:
> Bcc:
> Date: Fri, 23 Nov 2018 09:39:10 +0100
> Subject: Re: [TRNSYS-users] QTSABS vs QSOLTR
>
> Dear Christoph,
>
>
>
> Thank you for your response!
>
>
>
> The problem is that, it seems to me, that I don’t have internal shading,
> so QSOLTR should equal QTSABS. Am I right?
>
>
>
> How should I set window type and external devices to get QSOLTR=QTSABS?
>
>
>
> Kind regards,
> Karol
>
>
>
> *From:* hotline [mailto:hotline at Transsolar.com]
> *Sent:* Thursday, November 22, 2018 4:57 PM
> *To:* TRNSYS users mailing list at OneBuilding.org
> *Subject:* Re: [TRNSYS-users] QTSABS vs QSOLTR
>
>
>
> Dear Karol,
>
>
>
> QSOLTR is the total shortwave solar radiation transmitted through external
> windows *and* internal shading.
>
> QTSABS also includes the secondary heat flux which includes the convection
> of internal shader.
>
>
>
> Hope that clarifies your energy balance a bit.
>
>
>
> Best,
>
> Christoph
>
>
>
> *Von:* TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org> *Im
> Auftrag von *Karol Bandurski via TRNSYS-users
> *Gesendet:* Mittwoch, 21. November 2018 16:42
> *An:* trnsys-users at lists.onebuilding.org
> *Cc:* Karol Bandurski <karol.bandurski at put.poznan.pl>
> *Betreff:* [TRNSYS-users] QTSABS vs QSOLTR
>
>
>
> Dear All,
>
>
>
> I am going to find whole solar gain which come to zone throug windows.
>
> There are two outputs that I consider: QTSABS and QSOLTR.
>
>
>
> It seems to me that bigger should be QSOLTR, because it is shortwave
> radiation transmitted through window (but not kept 100% in air node).
>
> The QTSABS is what exactly has been kept - has been absorbed by inside
> surfaces.
>
> But it is appear that QTSABS > QSOLTR…
>
>
>
> Could you write me what is right interpretation of those outputs?
>
>
>
> Kind regards,
> Karol
>
>
>
> --------------------------------------------------------------------
>
> Karol BANDURSKI M. Sc.
>
> Faculty of Civil and Environemntal Engeneering
>
> Division of Heating, Air Conditioning and Air Protection
>
> Poznan University of Technology
>
> https://www.researchgate.net/profile/Karol_Bandurski
>
> www.put.poznan.pl/~karol.bandurski
>
>
>
> _______________________________________________
> TRNSYS-users mailing list
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>
>
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