[TRNSYS-users] TRNSYS Vs other modeling tools

[David BRADLEY]

Jen,

   Speaking very generally and only from my own experience, developing a 
model of a physical process inherently involves making some simplifying 
assumptions. A model developer can choose to build in fewer assumptions 
and give the end user more flexibility in implementing the model. The 
trade-off, however is in the ease of implementing the model; the user 
will have to specify more things like the inlet/outlet connections or 
the controls. Alternatively, a model developer can build in more 
assumptions and make the end user's life simpler. In so doing, however, 
they take away some of the model's flexibility.

   I find that in general, building simulation software tools occupy 
some place on the spectrum between ultimate ease of use and ultimate 
flexibility. There are building models out there in which you specify 
the postal code, the building's area and its general use category 
(school, office, etc.) and the model will give you a prediction of how 
much energy it thinks such a building would use annually. Very easy to 
implement, not very flexible. TRNSYS is, by design, at the very flexible 
end of the spectrum. In my experience if you are modeling conventional 
buildings with conventional (and more to the point conventionally 
controlled) buildings then Trnsys is probably not a very good option. 
If, however, you are modeling a system that needs to be put together 
component by component so that you can specify the specific connections 
and controls that you want to use then Trnsys is a good option.

  As a side note, we use a hybrid approach when we are dealing with a 
more or less conventional building that has an innovative central plant. 
In that case we will sometimes generate the building's heating and 
cooling loads in other software tool and then impose them on a central 
plant system that we have modeled in Trnsys.

kind regards,

  David


On 11/08/2021 19:36, Jen parken via TRNSYS-users wrote:
> hello
> I am consider simulating solar cooling based chiller to compare with 
> conventional ones.
>
>
> On Monday, November 8, 2021, 10:48:23 AM EST, Jeff Thornton 
> <thornton at tess-inc.com> wrote:
>
>
> Jen - it would really help to know what you’ll be modeling in TRNSYS 
> and what other tools you are considering.
>
> Jeff
>
> Sent from my iPhone
>
>> On Nov 8, 2021, at 8:17 AM, Jen parken via TRNSYS-users 
>> <trnsys-users at lists.onebuilding.org> wrote:
>>
>> 
>> Hello everyone.
>> I would like to know if there is any resource define the difference 
>> between using TRNSYS and other modeling tools.
>> I mean I am trying to convince my supervisor to use TRNSYS because I 
>> believe it is more accurate but I really need to defend my point with 
>> more accurate and specific answers .
>> thanks
>> Jen
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at lists.onebuilding.org
>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20211109/3d82c49e/attachment.htm>