Re: [TRNSYS-users] Database in TRNSYS

[Jochen Doell <jochen.doell@ise.fraunhofer.de>]

Dear Henk,

You could define the parameters You want to vary as equations in the control cards with free values (equations=xxx; cp_fluid=4.91; m_fluid=... ...). Give the type these placeholders as parameters (first You have to set the unit to "string", otherwise the type won't accept a combination of characters instead of numbers). Then set up a table in TRNEDIT with the different combinations of values for these parameters. That's how I simulated a large amount of collector-area, -orientation, storage-capacity and backup combinations.

You will recieve a large amount of output files You have to deal with. I did this with a combination of windows batch file and excel, but i think an awk-script would be more elegant...

Hope i was a help.

Best regards,
Jochen


trnsys-users-request@engr.wisc.edu schrieb:

---

Betreff:

[TRNSYS-users] Database in TRNSYS

Von:

"Henk Stijnen" <Stijnen@dwa.nl>

Datum:

Tue, 28 Aug 2007 11:17:28 +0200

An:

<trnsys-users@engr.wisc.edu>

An:

<trnsys-users@engr.wisc.edu>

Hi,
 
In several schema's, e.g. the solar heater, a liquid is used with its properties such as specific heat and mass. Now I want to store that properties in a sort of database, so that I can easily use them in different schemas, simulate different liquids in the same shema, etc. 
 
Has anyone experience herewith? Is there a sort of database technique in TRNSYS?
 
Thanks for suggestions,
 
Henk
  

-- 
_________________________________________________

Dipl.-Ing. (FH) Jochen Döll
Dept. Thermal Systems and Buildings

Fraunhofer-Institut für Solare Energiesysteme ISE
Heidenhofstrasse 2, 79110 Freiburg, Germany

Phone:	+49 (761) 4588-5456
Fax:	+49 (761) 4588-9000
Mail:	jochen.doell@ise.fraunhofer.de
Web:	www.ise.fraunhofer.de
_________________________________________________