Re: ApplyingTRNSYS on solar still modelling

["Werner Keilholz" <werner@xxxxxxx>]

Lyndon,

I'm not an expert in TRNSYS solar collectors models, but I would just like
to note that you are talking about a TRNSYS version that was released in
October 1990 and that we now write star-date 2002...

Also, many of the models that were freeware drafts 12 years ago are now
available as maintained and compiled commercial add-on libraries to TRNSYS,
such as the growingly popular TESS-libraries
( http://software.cstb.fr/soft/present.asp?context=TESS_Libraries&langue=us )

But I'm sure the experts have more details on this ...

Werner

lyndonz@senet.com.au wrote:

> Yousif,
>
> I tried to use TRNSYS to model commercial scale and pumped solar hot water but
> was unsuccessful.  The major problems I ran into were:
> 1.  The solar collector "type" provided in TRNSYS Version 13 had no thermal
> capacitance, a real problem for pumped systems.  The workaround was too complex
> and too uncertain from my liking;
> 2.  I obtained a type with capacitance from users of this listserver
> (thanks!!) then couldn't compile it. Windows FORTRAN compilers are expensive
> and, I found, rare.  I should have paid to get a compiled version.
> 3.  I failed to determine a method to measure albedo (reflection from the land
> and buildings nearby) and the model suggested this would be significant.
> Adelaide is 35 degrees south, KL is near the equator, so the issue is probably
> not as serious for you.
>
> UniNSW's SHW guru is Professor Graham Morrison, and his group is or has probably
> done some similar work. I don't know how prepared they'd be to help get you
> started, or whether there are useful papers about.
>
> Uni of Sydney are heavily into trough type solar thermal electricity research
> and finally ANU are developers of a big dish STE system, though that's probably
> a bit outside your interest.  Ditto.  Papers and additional names may be
> available from ANZSES conference abstracts (note the 2001 ANZSES Conference was
> the ISES 2001 Solar World Congress).
>
> Good luck with your work!
>
> Regards,
>
> Lyndon Zimmermann, Adelaide, Australia
>
> Quoting yousif abdalla <yousif22@yahoo.com>:
>
> > Dear all
> > I am a new user of TRNSYS, I am trying to apply it to
> > study a MULTI-STAGE EVACUATED SOLAR STILL.
> > Realy I don't know from where I have to start. If you
> > have any advice or hint please let me know.
> > thank you
> > Yousif Abdalla Abakr
> > PhD student
> > Faculty of Engineering
> > International Islamic University Malaysia
> > Gombak 51000
> > kuala Lumpur
> > Malaysia
> >
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--
  /    \____ Werner Keilholz, Software Development Group Leader
  \____/     CSTB Sophia Antipolis, ILC Division
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