Dear TRNSYS
user,
Did anyone face a problem
of getting COPs greater than the rated one
in a solar assisted absorption system? Where
COP rises to around (0.8) at the start of
the simulation and gets down to an average
(0.75) for the rest of the day, whilst the
rated cop is (0.7).
I assumed
the set point temp for the Aux heater 70 C
and the timestep was
1min
In my project, a cold tank
(type 4) is used to connect between the
chiller and the building, with the aid of
using type 682 to impose the load.
Is it resulted from a
mistake in the connections of the cold
tank?
Down below are the links, where
a&b for chiller-tank loop and c&d
for tank-load loop
a- Chilled water
temperature and flow rate (chiller107)
---->> Cold-side temperature and
flow rate (cold tank)
b-
Temperature (and flow rate) to load (cold
tank) --->> Chilled water inlet temp
and flow rate (chiller) trough a constant
speed pump
c-
Outlet temperature and flow rate (type
682) --->> Hot-side temperature and
flow rate (cold tank) through a pump
d-
Temperature (and flow rate) to heat source
(cold tank) --->> Inlet temperature
and flow rate of type 682
Am
I right? If yes, are
there other reasons, such as the set point
temp of the Aux heater, that might cause
this error?
Kind regards,
Shahen