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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-bounces@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 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 |