Dear all,
I
downloaded Combisys demo and found it is pretty easy to use as an education
tool
to
show the basic operation of solar combi-system.
I
even discussed with some students in my lesson about the
content of trd file,
sth
like: how the data transfer between types, and how to add
our cities into the demo to extend its function,
and
how to add some solar collector types they obtained from
google to the demo.
To
be honest, I can feel they really like this demo.
One
of them asked me a question about how to output the results
of two online plotters in the system.
Actually,
the system, described in
combisys.trd demo file, contains:
a.
2 online plotters: unit 41, type 65, output file: Assign ***.ou1
unit 45, type 65, output file: Assign ***.ou2
They are mainly used for
showing the operation information of the system.
In the original content of
combisys.trd file, they are set "no need to output result
file", just used as two "monitors".
b. Unit 51, Type 24, Monthly
Integrator + Unit 52, Type 25, Printer
they can be considered as
two partners, and work together to output file: Assign
***.out
c. Unit 50 Type 28
Simulation Summary
output file: Assign ***.sum
The thing is
we remove the "*" before the
output statement "Assign ***.ou1" and ou2 in the related groups of
online plotters, so that the demo can output these two
result files.
however, we found no data is
in the ou1 and ou2 file, they are blank.
and other output files
works.
So, we did
some assumption analysis ( actually, it likes a simple brain
storm ) about why it happens:
a. no data
are calculated out by demo: that is not true, because online
plotter works very, both of them. all the performance curves
are shown every calculation step.
b. online
plotters only show the results, not record the data into
output file:
we thought
that is also not true. The script regarding the online
plotter is shown below:
*|[OL2|
*
*
Unit 45 Type 65 Online plotter
*
Parameters 10 ! Here shows 10
parameters of type 65, OFF=0 means display online; LU=-1
, we guess it is means logical unit =-1?
*
*NbLeft NbRight LeftMin LeftMax RightMin
RightMax
6 2 0.0 100000000 0.0 100.0
*NbPlots XGridPts OFF LU
1 10 0 -1
*
Inputs 8
*
44,1 44,2 44,5 44,6 44,7
44,4 EFFCOLL SOLFRAC
ESol EAux EMains EDHW EHouse
ELossTank EffCol SolFrac
*
*
Labels 5
*
kJ %
Energy
Percentage
Integrated
*
Assign ***.ou2 22 ! here we just
remove the header sign "*".
*
*|]
c. this online plotter is
type 65c, means a online plotter without file: because
"assign" statement has already been contained, so it seems
not to be a right answer.
d. the post-processing will
erase the data in the ou1 and ou2 files: that is a
interesting idea from one student, but we checked the "out"
folder, bat and txt file did not support this assumption.
In a summary, we have no
idea about why two output files-ou1 and ou2 are blank.
Thus, I send this email to
all of you for a help.
Any comments and advise will
be helpful to us.
Thanks,