[TRNSYS-users] TRNSYS-users Digest, Vol 84, Issue 28

Mon Dec 26 22:17:02 PST 2011

Dear all,

Merry Christmas and Happy New Yea!

I have several questions during my studying of TRNSYS listed as follows:

1. I know that when I use the Ventilation to delivery the cold and hot air
into the controlled zone, the Cooling and Heating must be turn off. The
temperature of the controlled zone is used to adjust the temperature and
flow rate of the ventilating air. But I also want to obtain the cooling
load or heating load on this occasion. How can I reach my aim?

2. When using TRNBuild to design the controlled zone, I am confused by
defining control strategy and scale in designing the Artificial Lighting.

3. The TRNSYS software I used is Version 16 and was bought from the agency
of China Mainland. The agency said that I had to pay if I want to upgrade
my software to Version 17. I want to know how the software is upgraded for
free. By the way, my software does not have a serial number but a Passdog.

Thank you very much.

Best regards,

Cathy Sun

2011/12/20 <trnsys-users-request at cae.wisc.edu>

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> Today's Topics:
>
>   1. Re: heat flux through a wall (David BRADLEY)
>   2. Re: Ventilation VS cooling & heating (David BRADLEY)
>   3. AUTO: Axel Oliva ist momentan nicht erreichbar. (R?ckkehr am
>      04.01.2012) (Axel.Oliva at ise.fraunhofer.de)
>   4. Timestep in Control cards and timebase in TRNBuild (Heloise PELEN)
>
>
> ---------- 已转发邮件 ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: Nils Nikolai <nnikolai at umd.edu>
> Cc: trnsys-users at cae.wisc.edu
> Date: Mon, 19 Dec 2011 12:04:50 -0600
> Subject: Re: [TRNSYS-users] heat flux through a wall
> Nils,
> I think that if you use the combination of QCOMO and QCOMI, you can get at
> the energy transfer through the wall. QCOMO is the energy from outside the
> wall into the wall surface. QCOMI is the same for the inner surface. The
> difference between the two should be the amount of energy either stored by
> or given up by the wall.
> Best,
> David
>
>
> On 12/16/2011 07:29, Nils Nikolai wrote:
>
>> Dear TrnSYS users,
>>
>> i have the same question as Pablo. I am not sure how i can actually get
>> the heat flux through a wall. Is there an answer to this question?
>>
>> Thanks in Advance,
>> Nils
>> ______________________________**_________________
>> TRNSYS-users mailing list
>> TRNSYS-users at cae.wisc.edu
>> https://mailman.cae.wisc.edu/**listinfo/trnsys-users<https://mailman.cae.wisc.edu/listinfo/trnsys-users>
>>
>>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475
> d.bradley at tess-inc.com
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
>
>
>
> ---------- 已转发邮件 ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: Chou Shen <csz59 at mst.edu>
> Cc: trnsys-users at cae.wisc.edu
> Date: Mon, 19 Dec 2011 12:27:15 -0600
> Subject: Re: [TRNSYS-users] Ventilation VS cooling & heating
> Chou,
>   In Type56/TRNBuild the term "VENTILATION" just means a flow of air
> whether it is hot, cold, or neutral. It isn't necessarily tied in any way
> to the HVAC system. The "HEATING" and "COOLING" types are used to calculate
> sensible loads for the space. Those types don't have anything to do with
> how that energy is delivered to the space.
>
>   Typically, there are two kinds of simulations that I do with Type56:
>
> Early on in a project, I need to determine the peak heating and cooling
> loads for the space and I need to get a very basic idea of how much energy
> the building will consume over the year. In order to do this, I use
> VENTILATION types to put the outdoor (fresh) air requirements into the
> zone. and I use HEATING and COOLING types to define set points. I allow the
> "system" to have unlimited power because all I really care about is the
> maximum hourly value and the annual sum. The annual sum gives a very rough
> idea of how much energy is required by the building. You have to do one of
> two things in order to get how much energy is required by the HVAC system:
> either define a simple COP for the heating and cooling system or use other
> TRNSYS models that take heating and cooling load as an input and return the
> power consumed (note, there are very few of these components)
>
> The second kind of simulation is much more common and gets at one of
> TRNSYS's strengths. In this, you use the VENTILATION type to deliver hot or
> cold air to the space and you use a thermostat model (such as Type108) to
> turn on and off equipment that controls the flow of air. In this case, you
> disable the HEATING and COOLING types because you don't care about loads.
> The equipment of the system (fans, pumps, heat pumps, furnaces, chillers,
> etc.) will compute their source energy requirements as a function of their
> inlet conditions and the building will simply react to the ventilation air
> that it receives.
>
> Kind regards,
>  David
>
>
> On 12/18/2011 05:12, Chou Shen wrote:
>
> Hi
>
> Thanks to David and Matt, you messages have helped me a lot. Now I know
> how to use type 24 & 25 to get monthly summary.
>
> At this time I have some other questions:
> 1. When Editing type 56, in the Ventilation lable, the Heating and Cooling
> option can be set up by defining airchange rate and temperature & RH of air
> flow; while in both the Cooling lable and Heating lable, the cooling and
> heating option can be set up by defining cooling / heating power (does that
> mean I need to estimate the cooling / heating load before set this block
> up?), and the setpoint temperature & RH. As a result, type 56 provides two
> methods to define HVAC system. What's the relationships between the two
> methods?.
>
> 2. In addition to adding the information of HVAC in type 56, do I need to
> creat the HVAC system in to get the information of energy consumption of
> HVAC system?
>
> Thanks!
>
>
> --
> Chou Shen
> Graduate Research Assistant
> Department of Civil, Architectural & Environmental Engineering
> Missouri University of Science and Technology
>
>
>
>
>
> _______________________________________________
> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>
>
> ---------- 已转发邮件 ----------
> From: Axel.Oliva at ise.fraunhofer.de
> To: trnsys-users at cae.wisc.edu
> Cc:
> Date: Mon, 19 Dec 2011 22:02:47 +0100
> Subject: [TRNSYS-users] AUTO: Axel Oliva ist momentan nicht erreichbar.
> (Rückkehr am 04.01.2012)
>
> Ich bin bis 04.01.2012 abwesend.
>
> Vielen Dank für die Nachricht. Ich werde diese nach meiner Rückkehr
> beantworten.
>
>
> Hinweis: Dies ist eine automatische Antwort auf Ihre Nachricht
> "TRNSYS-users Digest, Vol 84, Issue 27" gesendet am 19.12.2011 19:00:03.
>
> Diese ist die einzige Benachrichtigung, die Sie empfangen werden, während
> diese Person abwesend ist.
>
>
>
>
> ---------- 已转发邮件 ----------
> From: Heloise PELEN <heloise.pelen at etamine.coop>
> To: "'trnsys-users at engr.wisc.edu'" <trnsys-users at engr.wisc.edu>
> Cc:
> Date: Tue, 20 Dec 2011 15:36:09 +0000
> Subject: [TRNSYS-users] Timestep in Control cards and timebase in TRNBuild
>
> Hello, ****
>
> ** **
>
> Does the timestep defined in the control card in TRNSYS simulation studio
> has to be the same as the timebase defined in Outputs “Calculate transfer
> functions” in the BUI file ?****
>
> ** **
>
> Thank you,****
>
> ** **
>
> Regards,****
>
> ** **
>
> *Héloïse Pelen*
>
> *TAMINE*
>
> *[image: Description : etamine_mail]*****
>
> heloise.pelen at etamine.coop****
>
> 10 avenue des Canuts – 69120 Vaulx en Velin ****
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> Std : 04 37 45 34 20 / Fax : 04 37 45 41 38****
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> Ld : 04 37 45 34 13 / Port : 06 65 07 41 77****
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> www.etamine.coop****
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