Re: ApplyingTRNSYS on solar still modelling

[<lyndonz@xxxxxxxxxxxx>]

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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