[TRNSYS-users] LITTLE ADVICE ON TYPE 60+TYPE 2

[David Bradley]

Lorenzo, et al.
   The Powell's method solver is included in TRNSYS primarily for systems 
that have no capacitance in them (PV directly coupled to a resistive load 
for example). It's use is almost never warranted when you have a system 
that includes capacitance such as one with a thermal storage tank in it. If 
you are having trouble with instability and controllers, I would go to a 
good bit of effort to discover the cause of the problem using the 
successive substitution method before trying to use the Powell's method solver.
Kind regards,
  David

At 05:16 3/16/2006, Lorenzo Zamboni wrote:
>Dear all,
>     I would like to give a little advice on the use of type 2 
> (controller) with type 60 (storage tank). The new version of type 2 is 
> supposed to be solved using Powell's method, however, up to me, the 
> simulation is not working properly due to convergence problems (also 
> bringing plenty of time). On the other hand using the old version of type 
> 2 would remove that unwanted behaviour. I hope this comment could help.
>
>cordially,
>Lorenzo
>
>--
>||||||||||||||||||||||||||||||||||||||||||||
>Lorenzo Zamboni
>- Ing - PhD -
>
>UNIVERSITA' DI PADOVA
>Dipartimento  di Tecnica e Gestione
>dei sistemi industriali [DTG]
>
>UNIVERSITY OF PADOVA
>Department of industrial management
>and engineering
>
>stradella S.Nicola, 3
>36100 VICENZA - ITALY
>phone: +39 0444 99 87 78
>mobile: +39 349 73 06 450
>e-mail: <mailto:lorenzo.zamboni at gmail.com>lorenzo.zamboni at gmail.com
>         <mailto:lorenzo.zamboni at katamail.com>lorenzo.zamboni at katamail.com
>
>||||||||||||||||||||||||||||||||||||||||||||_______________________________________________
>TRNSYS-users mailing list
>TRNSYS-users at engr.wisc.edu
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