[TRNSYS-users] parametric table with type 56

Thu Nov 10 09:11:19 PST 2005

Dear Christophe,

I apologize for the mistake. Thanks for finding this problem. We have 
taken note of this request for an improvement in a future release.

Regarding the literature search, we have a list of papers that used 
TRNSYS for their simulations. It has not been updated in the last couple 
of years, but I will try to update it very soon. Please go to the 
website http://sel.me.wisc.edu/trnsys/ and click on 'Papers and Validation'.

Best regards,

Diego

Enertech wrote:

> Dear Diego,
>
> Thanks for your help, I appreciate.
> I’m afraid there is a mistake in your proposal : I don’t think 
> QSOLGAIN is equal to QTABSI + QTABSO. I’ve done some simulations and 
> compared values of energy_zone.bal with direct outputs : at any time I 
> find that QSOLGAIN = QTSABS (NTYPE 75) and not at all QTABSI + QTABSO. 
> It seems logical for me : QTABSI and QTABSO are total radiation 
> absorbed at all inside/outside surf. of zone (*includes solar gains, 
> radiative heat, internal radiative gains and wallgains*) (see volume 
> 6, part 2, page 96). It doesn’t correspond to solar gains…don't you 
> agree ?
>
> I will adopt your proposal to obtain the energy balance of my building 
> but it is not perfectly satisfying. In my job, more and more projects 
> use dynamic simulation of building. It is very interesting because, 
> thanks to dynamic simulation, we learn a lot of things about thermal 
> behaviour of buildings. But we have to be sure of our simulation 
> results. In thermal simulations, it is always satisfying to verify 
> that energy balance is OK. It is a good indicator of coherence of 
> results. That’s why I think it may be very useful to have access to 
> QTRANS in direct outputs. Don’t you think it can be included in the 
> next version of TRNSYS 16 ?
>
> An other suggestion : it may be very useful for TRNSYS Users to have 
> access to scientific papers about studies using TRNSYS (I know there 
> exist a lot of papers about scientific studies using dynamic 
> simulation, especially in solar energy…). Reading these papers can be 
> very reassuring concerning validations of models, useful concerning 
> limits of models, etc.
>
> I think many TRNSYS Users don’t have the time to search these kind of 
> papers in the web. Don’t you think it can be possible to have access 
> to these papers or links to site where they can be found, in your SEL 
> Website ?
>
> Best regards,
> /Christophe.
>
> /At 17:04 09/11/2005, Diego A. Arias wrote:
>
>> Dear Christophe:
>>
>> The energy balance on a zone is given by:
>> BAL_ENERGY = -DQAIRdt + QHEAT - QCOOL + QINF + QVENT + QCOUP + QTRANS 
>> + QGINT + QWGAIN + QSOLGAIN
>> BAL_ENERGY should be always 0.
>>
>> You can get many of these values using the optional outputs (NTYPES):
>> DQAIRdt --> DQAIR (NTYPE8)
>> QHEAT --> QHEAT (NTYPE30)
>> QCOOL--> QCOOL (NTYPE31)
>> QINF --> QINF (NTYPE4)
>> QVENT --> QVENT (NTYPE5)
>> QCOUP --> QCOUP(NTYPE6)
>> QGINT --> QGCONV(NTYPE7) + QGRAD(NTYPE13)
>> QWGAIN --> QTWG (NTYPE76)
>> QSOLGAIN --> QTABSI (NTYPE14) + QTABSO(NTYPE15)
>>
>> The only variable that is not given as an optional output is QTRANS. 
>> But, as you have all of the other variables, it can be calculated 
>> from the energy balance.
>> Please let me know if this helps.
>> Best regards,
>>
>> Diego
>>
>>
>> Enertech wrote:
>>
>>> Dear Diego,
>>>
>>> Thanks for your solution. Even if it isn't the most cleanest 
>>> solution, I don't really care. But I think the most simplest 
>>> solution would be to obtain the same energy balance that in the file 
>>> energy_zone.bal, with direct outputs (see the second part of my 
>>> email). I found the equivalent output of QSOLGAIN : this is QTSABS 
>>> (NTYPE75, see volume 6, part 2, page 98), but I don't know how to 
>>> obtain the equivalent output (or combination of outputs) of QTRANS. 
>>> Do you have an idea ?
>>>
>>> Kind Regards,
>>>
>>> Christophe
>>>
>>> At 17:07 08/11/2005, Diego A. Arias wrote:
>>>
>>>> Dear Christophe:
>>>>
>>>> Unfortunately, the renaming of the output files only occurs in 
>>>> files that have the same file name as the input file.
>>>>
>>>> An alternative could be to take advantage of the possibility that 
>>>> TRNSYS can be run from the command line. If you type 'TRNExe.exe
>>>> Input.dck', TRNSYS will start and execute the input file Input.dck
>>>> This alternative allows you to run batch files. For example, you 
>>>> can have in your batch file:
>>>>
>>>> "C:\Program Files\Trnsys16\Exe\TRNExe.exe" "C:\Program 
>>>> Files\Trnsys16\MyProjects\input1.dck" /N
>>>> "C:\Program Files\Trnsys16\Exe\TRNExe.exe" "C:\Program 
>>>> Files\Trnsys16\MyProjects\input2.dck" /N
>>>>
>>>> In this case, TRNSYS will start and run input1.dck, close, open 
>>>> again and run input2.dck. The command /N tells TRNSYS not to 
>>>> display the dialog box at the end of the simulation.
>>>>
>>>> This may not be the cleanest solution, since you will have to 
>>>> create the input files by hand, but I do not know of another way to 
>>>> work out this problem.
>>>> Please let me know if you need additional information of how to 
>>>> implement this.
>>>> Best regards,
>>>>
>>>> Diego
>>>>
>>>> Enertech wrote:
>>>>
>>>>> Dear TRNSYS Users,
>>>>>
>>>>> In a building simulation study, I want to do a batch simulation by 
>>>>> changing automatically several parameters. So, I would like to use 
>>>>> TRNEDIT and a parametric table. My problem is that the file I want 
>>>>> to use,"Energy_zone.bal", is overwritten at each simulation and 
>>>>> that I don't know how to increment this file name.
>>>>>
>>>>> I know that the output file must have the same name that the *.trd 
>>>>> file to be incremented but I don't know how to change the name of 
>>>>> energy_zone.bal.
>>>>> As a solution, I'm trying to recalculate the data contained in the 
>>>>> file "energy_zone.bal" with direct outputs of the *.bui file, but 
>>>>> I don't know how to calculate QTRANS and QSOLGAIN (see volume 6 
>>>>> part 2, page 103), these variables are not direct outputs.
>>>>> So, what do you think I should do ?
>>>>>
>>>>> Thanks a lot for your help.
>>>>> Christophe
>>>>>
>>>>> ===========================
>>>>> ENERTECH
>>>>> F-26160 FELINES SUR RIMANDOULE
>>>>> tel-fax : 04 75 90 18 54
>>>>> Email : sidler at club-internet.fr
>>>>> Web : http://sidler.club.fr <http://sidler.club.fr/>
>>>>> ================================
>>>>>
>>>>> _______________________________________________
>>>>> TRNSYS-users mailing list
>>>>> TRNSYS-users at engr.wisc.edu
>>>>> https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
>>>>
>>>>
>>>>
>>>>
>>>> -- 
>>>>
>>>> Diego A. Arias
>>>> TRNSYS Coordinator
>>>> Solar Energy Laboratory
>>>> University of Wisconsin - Madison
>>>> 1500 Engineering Drive
>>>> Madison, WI 53706
>>>> _______________________________________________
>>>> TRNSYS-users mailing list
>>>> TRNSYS-users at engr.wisc.edu
>>>> https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
>>>
>>>
>>>
>>> ===========================
>>> ENERTECH
>>> F-26160 FELINES SUR RIMANDOULE
>>> tel-fax : 04 75 90 18 54
>>> Email : sidler at club-internet.fr
>>> Web : http://sidler.club.fr <http://sidler.club.fr/>
>>> ================================
>>
>>
> ===========================
> ENERTECH
> F-26160 FELINES SUR RIMANDOULE
> tel-fax : 04 75 90 18 54
> Email : sidler at club-internet.fr
> Web : http://sidler.club.fr
> <http://sidler.club.fr/>================================
>