[TRNSYS-users] Question of active layer

Fri Sep 23 06:57:52 PDT 2011

Dear all,

      I have the questions about Active Layer:
1. The floor heating area is 27.2 m^2 in our test room, but the floor area
is 40 m^2. Like this situation, Can I set two floors in TRNBuild? One is the
floor  with 40 m^2, another is floor with 27.2 m^2 active layer? Or others?

2. I only know the power of this floor heating 1400 W. How can I define it?
Or by what method to stand for this power?

     Many thanks in advance!

     Br.

     wang

2011/9/23 <trnsys-users-request at cae.wisc.edu>

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> Today's Topics:
>
>   1. Re: TRnsys3D skecthup plugin (Thibaut VITTE)
>   2. Re: Type73 - Flat-Plate Collector (Igor Grujic)
>   3. Re: Type 2b controller dead band problem. (Michael Bissett)
>
>
> ---------- 已转发邮件 ----------
> From: Thibaut VITTE <thibaut.vitte at h3c-energies.fr>
> To: duffy at tess-inc.com, trnsys-users at cae.wisc.edu
> Date: Thu, 22 Sep 2011 19:49:03 +0200
> Subject: Re: [TRNSYS-users] TRnsys3D skecthup plugin
> Dear Matt,
>
> First, I may have sound a little bit agressive ;-) , and I'm sorry but I
> was SO frustated to have lost 3 days of work before returning to the old
> method...
>
> Yes I know quite all the tricks you've said, and I did read the manual, and
> did a small building, and I perfectly know I would have been able to do so
> in a training course within 2 hours.
>
> But the problem is for a bigger building !! (even with the manual next to
> the keyboard...)
> I think my problem is that I (still?) don't know how to draw perfectly from
> the first click in sketchup, and that I have to erase, cancel, etc. And
> then, it is a big mess.
> Anyway, thanks for taking into account our concerns, I have my answer that
> some people manage to be efficient with Trnsys3D!
>
> Best
> Thibaut
>
>
>
>
> ---------- 已转发邮件 ----------
> From: "Igor Grujic" <igor.g at gmx.at>
> To: trnsys-users at cae.wisc.edu
> Date: Thu, 22 Sep 2011 19:50:44 +0200
> Subject: Re: [TRNSYS-users] Type73 - Flat-Plate Collector
> Dear Matt,
>
> Thanks al lot for your quick reply, but I have one more question.
>
> If I change the timestep to 0.125 (or smaller) what’s about the
> weather-values? (Those are generated for 1 year (8760 hours) in
> 1-hour-steps).
> Need to simulate a one-year-consumption of a house for which a have the
> hourly usage-values. Changing the time step will falsify the results, right?
> (But I just gonna try it out)
>
> Thanks again for the help
>
> Best regards,
> Igor
>
> -------- Original-Nachricht --------
> > Datum: Wed, 21 Sep 2011 10:15:24 -0500 (CDT)
> > Von: "Matt Duffy" <duffy at tess-inc.com>
> > An: "Igor Grujic" <igor.g at gmx.at>, trnsys-users at cae.wisc.edu
> > Betreff: Re: [TRNSYS-users] Type73 - Flat-Plate Collector
>
> > Dear Igor,First of all, please make sure that your timestep is small -
> > probably under 0.125 hour. Type Type2b collector is recommended for a
> > simulation like this. Honestly, there are few simulations where one
> should use
> > Powell's method such as a PV connected to a pump. If you continue to have
> > problems, please feel free to send to your local TRNSYS distributor or
> me.Best
> > regards,Matt Duffy   ----- Original Message -----From: "Igor
> > Grujic" >;igor.g at gmx.at
>
> --
> NEU: FreePhone - 0ct/min Handyspartarif mit Geld-zurück-Garantie!
> Jetzt informieren: http://www.gmx.net/de/go/freephone
>
>
>
> ---------- 已转发邮件 ----------
> From: Michael Bissett <mikebiscuit at gmail.com>
> To: duffy at tess-inc.com
> Date: Thu, 22 Sep 2011 22:50:09 +0200
> Subject: Re: [TRNSYS-users] Type 2b controller dead band problem.
> I have taken your advice and made the timestep, 0.125hr
>
> Still I cannot get it to work. it is still switching on the time step
> instead of the dead-band temp.
>
> Mike
>
> On Wed, Sep 21, 2011 at 3:33 PM, Matt Duffy <duffy at tess-inc.com> wrote:
>
>>
>> Dear Michael,
>>
>> Please make sure that you are using a reasonable timestep such as 0.125 hr
>> (type in terms of hours to avoid problems with the Studio's minute
>> conversion trucation). Also, make sure that you have the latest TRNSYS and
>> TESS Libraries versions as well.
>>
>> Best regards,
>>
>> Matt Duffy
>>
>>   *----- Original Message -----*
>> *From:* "Michael Bissett" <mikebiscuit at gmail.com>
>> *Sent:* Tue, September 20, 2011 12:44
>> *Subject:* Re: [TRNSYS-users] Type 2b controller dead band problem.
>>
>>     Hi
>>
>> I have read the information, I have tried to increase parameter 1, I have
>> also looped the controller to its self. Still it does not work
>> I have also tried changing many other parameters and have spent a lot of
>> time on this problem. still with no luck.
>>
>> Any other suggestions?
>>
>> Mike
>>
>>
>>
>>
>> On Tue, Sep 20, 2011 at 1:59 PM, Angel Carrera <
>> angel.carrera at aiguasol.coop> wrote:
>>
>>>
>>> Mike,
>>>
>>> you should connect the output control function of the controller to its
>>> own input control function (Input number 4). Also, you should increase the
>>> value of parameter 1, to the default value at least (the influence of this
>>> parameter is explained at the type 2 documentation, I recommend you to read
>>> it, together with the generic section for controllers at the trnsys help)
>>>
>>> Regards
>>>
>>> Angel
>>>
>>>
>>>
>>> 2011/9/19 Michael Bissett <mikebiscuit at gmail.com>
>>>
>>>>
>>>> Dear Trnsys
>>>>
>>>> I am experiencing problems with a simple* type 2b controller*.
>>>>
>>>> I am using a solar collector type 564b
>>>>
>>>> I am trying to compare the temperature of the output of the collector
>>>> with output of the tank, getting a temperature difference. I have set the
>>>> dead band from 4-10 degrees C.
>>>>
>>>> In the simulation as the temperature rises to 10degrees difference, the
>>>> control signal is 1 switching the pump on correctly. but after this the
>>>> controller only switches every time step. I have tried shortening the time
>>>> step... and changing other parameters.. still with no success.
>>>>
>>>> I have attached the file.
>>>>
>>>> Yours Sincerely
>>>>
>>>> Mike Bissett
>>>>
>>>> Department of Electrical Engineering
>>>> University of Cape Town
>>>> South Africa
>>>> _______________________________________________
>>>> TRNSYS-users mailing list
>>>> TRNSYS-users at cae.wisc.edu
>>>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>>>>
>>>>
>>>
>>>
>>> --
>>> *Àngel Carrera*
>>>
>>> *Responsable I+D
>>> Àrea tècnica*
>>>
>>> Sistemes Avançats d'Energia Solar Tèrmica SCCL
>>> C/ Roger de Llúria, 29 3r 2a 08009 Barcelona
>>> Tel: (+34) 93 342 47 55 Fax: (+34) 93 342 47 56
>>>
>>> angel.carrera at aiguasol.coop
>>> http://www.aiguasol.coop
>>>
>> ------------------------------
>>
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