Mesude, I think you want to use one Type567-2 instead. This mode of Type567 takes the efficiency as an input and not from a data file. Save the efficiency values from your Excel file as a tab-delimited or comma delimited text file. Then use a Type9 (data reader) to read the file during your TRNSYS simulation. The output of Type9 will be the efficiency input to Type567. Best, David On 10/26/2010 21:44, mesude bayrakci wrote: Hello, -- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |