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:
-- _________________________________________________ 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 _________________________________________________ |