Dear Emilia
First of all, I could not find type 680 in TESS. Any way all the models of absorption chillers have some similar approaches. It means that the cop exactly is the provided cooling divided by used heat. Please be aware that in the Qaux is not taken into account in the cop equation (as it should not be considered based on the open literature).
I checked this through the Fortran code of Types 676 to 679 and 107. You can do the same. Also you can find it in TESS documentation related to each type. But the question is still unsolved that TESS ver 17 does not have type 680!
Hope it helps Mehdi
From: trnsys-users-bounces@cae.wisc.edu [mailto:trnsys-users-bounce!
s@cae.wisc.edu] On Behalf Of Emilia Visek
Dear Ratnalee, Thank you for the explanation. I believed so, but it was not clear from TRNSYS documentation.
The type680 si located in HVAC TESS library under single-effect absorption chiller hot-water fired.
Best regards, Emilia Visek On Wed, Sep 14, 2011 at 8:48 PM, Ratnalee Patil <Ratnalee@innovativedesign.net> wrote: Emilia,
For the absorption chiller models I believe the rated COP to be supplied as a parameter is thermal COP (Qcooling output/Qheat input to generator). In the COP output from the chiller model however, the electricity consumed by the chiller for the operation (for pumps etc.) is taken into consideration based on the auxiliary electric power (Qaux) supplied as one of the parameters. Thus the output COP = Qcooling output/(Qheat input to generator + Qaux).
By the way, where is this Type 680 located? I am aware of Types 676 to 679, Type 681, and Type 107 for absorption chillers.
Thanks.
Regards, Ratnalee Patil B.Arch., M.A.Sc. Engineering Sustainable Design Analyst Innovative Design 850 West Morgan St. Raleigh, NC 27603 Ph: (919) 832-6303 Fax: (919) 832-3339
From: Emilia Visek [mailto:emilia.visek@mail.polimi.it]
Dear all, The COPrated from type680, is thermal or electrical COP? Thank you, EV
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