Re: ApplyingTRNSYS on solar still modelling

["David Bradley" <bradley@xxxxxxxxxxxx>]

Lyndon,
   Werner is quite correct that TRNSYS 15 and TRNSYS 13 are rather 
significantly different. I might add that there is a solar collector with 
capacitance model in the TESS Solar Library that Werner mentioned.
Cheers,
   David

At 11:28 AM 1/15/2002 +0100, Werner Keilholz wrote:
>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
>   /    \____ s-mail: BP 209, 06904 SOPHIA ANTIPOLIS,  F R A N C E
>   \____/     phone: +33 (0)4 93 95 67 00 -- fax: +33 (0)4 93 95 67 33
>   /    \____ Mailto:werner@cstb.fr
>   \____/     http://evl.cstb.fr/english/team/WK/werner.htm
>
>              *** Happy New Year *** Bonne Année *** Gutes Neues Jahr ***

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