Dear Frank, define the Parameter of the component you want to vary as a string and give it a name (e.g. "a_coll" for the collector area). Then You can add a "constants" table to the control cards Constants=1 a_coll=100 When You start TRNedit and choose "new table". TRNedit will allow You to define various values for your declared constants, here only "a_coll". Best regards, Jochen
-- 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 Mail: jochen.doell@ise.fraunhofer.de Web: www.ise.fraunhofer.de |