[TRNSYS-users] Catalog Data, Type 927 and Type 107, GenOpt

[David BRADLEY]

Hoofar,

   There are normalized versions of the absorption chiller in the TESS 
HVAC library. It would be easier to optimize the sizing of your chiller 
using those components.

   That said, some years ago we did a project in which we were looking 
at whether various kinds of HVAC equipment data could be normalized 
well. Single speed compressor heat pumps normalize very well; if you 
divide all of the capacity values in manufacturer data by the rated 
capacity and divide all the COPs by the rated COP, the machines 
(regardless of their rated capacity) all look quite similar. Absorption 
chillers did /not /normalize anywhere near as well. We felt it was worth 
writing a normalized absorption chiller model anyway for a number of 
reasons but I would urge a bit of caution.

   The data files are prepared using manufacturers data. I usually do 
the job in Excel rather than in Notepad and then I save the relevant 
sheet(s) as tab delimited text files.

regards,

  Davdi


On 03/15/2019 12:56, Hemmatabady, Hoofar via TRNSYS-users wrote:
>
> Dear TRNSYS users,
>
> I need to use Type 927 (Water-Water Heat Pump) and also Type 107 
> (Absorption Chiller) for geothermal heating and cooling simulation. At 
> the moment, I want to use GenOpt for optimizing size of my components 
> (including types 107 and 927). So the capacities change in each run by 
> GenOpt.
>
> 1)Is it possible to use the sample catalog data files (which are 
> available in TRNSYS) for different capacities of the mentioned types 
> without modifying them because the files include normalized data?? 
> (for type 107 it seems to be possible because the sample catalog is 
> using capacity and design energy _fraction_!! but for type  927 
> _normalized_**capacities and power are required).
>
> If not, what is the proper way of using these components in optimization?
>
> 2)How can I prepare catalog data file for a component generally? By 
> modifying the sample data file as a template in Notepad considering 
> the manufacturer’s data?
>
> Best regards
>
> Hoofar
>
>
> _______________________________________________
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> 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
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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