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