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Re: [TRNSYS-users] type 42c
Pablo,
Type42 is a very generic model for reading the performance data for any
kind of equipment that you want. The restrictions are that the performance
of your equipment can depend on 1, 2 or 3 independent variable conditions
and that Type42 can return up to 5 different performance measures. Examples
of independent variable conditions in the case of a heat pump might be
outdoor dry bulb temperature, indoor dry bulb temperature, and indoor wet
bulb temperature. Examples of performance measures might be heating
capacity, cooling capacity, and power draw. I do not know what data was
available in perform.dat but I am afraid that file has been lost a long
time ago. It is not too much trouble to make new data files using
information from manufacturer's catalogs and in fact, if you have the TESS
HVAC Library, there is a folder called \Trnsys16\Tesss
Models\SampleCatalogData\ that contains some examples. I would send an
example but the heat pumps in the TESS HVAC library read heating and
cooling data from separate files so it would be a little hard to use Type42
to read and use those files directly without the corresponding Type.
Kind regards,
David
At 21:03 6/10/2006, Pablo Est Poblete Giacaman wrote:
Dear All:
My name is Pablo Esteban Poblete, I´m a Mechanical Engineering
student at Universidad de Concepción, Chile. I´m working with
16.00.0036 Trnsys version trying to modeling an air to air heat
pump. I´ve also tried to use the type 42c in HVAC/Conditioning
Equipment.
The problem is that I need a performance file of the heat pump. The type
42c?s description says that the file which contains the performance data
is /TRNWIN/PERFORM.DAT and I don´t have any folder TRNWIN nor any file
PERFORM.DAT, hence I don´t know neither how is the file nor which the
format is.
The description of the Type 42c says there are some examples of a heat
pump, but I haven?t been able to find them.
Am I working with the wrong type to model an air to air heat pump? Which
is the best type in this version to do what I want to do? I just need a
simple model. I would appreciate it if you could help me.
Thanks in advance
Regards,
Pablo Esteban Poblete
Universidad de Concepción
Chile
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