I have compared a datafile I have set
up myself based on a particular air cooled chiller model with the sample
data file for Type 655, and it seems like the sample data file is appropriate,
but of course in reversed order. So I think you can safely just swith the
two columns in the sample file so that COP comes first and capacity second.
I think this is also the case for Type 666.
Best regards,
Knut Erik
From:
a8304506@graduate.hku.hk
To:
knut.erik.enerstvedt@niva.no
Cc:
trnsys-users@engr.wisc.edu
Date:
04/30/2010 03:15 PM
Subject:
Re: [TRNSYS-users] Likely bugs in Type655
and Type666
Hello, Knut.
Thank you for your reply, but do you know if the information indicated
in the
sample data file is appropriate, i.e. the first column is really the capacity
ratio while the second column is the COP ratio. Your reply is appreciated.
Best Regards
LEE, Chun Kwong
Division of Building Science and Technology
City University of Hong Kong
Quoting knut.erik.enerstvedt@niva.no:
> Hello,
>
> You are absolutely right about this. There is a mismatch between
> documentation and example datafile on one side and source code on
the
> other. The first column in the datafile should consist of COP ratios,
> while the second column should consist of capacity ratios. There have
been
> some postings about this on the list in the past.
>
> Best regards,
> Knut Erik Enerstvedt
>
>
>
> >Hello, all.
>
> >I previously developed a parametric model for a water-cooled chiller.
I
> used it
> >to compare the results with those based on Type666. I then
found that
> >calculated COP seemed to increase only mildly during the low-load
period
> when
> >using Type666. I went through the source code and the related
data
> files. I
> >found that the following statements appeared to be wrong:
>
> >COP_RATIO=Y(1)
> >CAP_RATIO=Y(2)
>
> >According to the data file, the first output should be the capacity
ratio
> while
> >the second output is the COP ratio. The same case happened
for Type655.
> Am I
> >wrong?
>
> >Best Regards
> >LEE, Chun Kwong
> >Division of Building Science and Technology
> >City University of Hong Kong
>
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