Tiziano, Could you please send me the Excel macro so that I can run your simulation? Kind regards, David Tiziano Terlizzese wrote: Dear TRNSYS Users, I attach the tpf file and the txt file used in the simulation. I have the following problem: there are two tanks (hot_reservoir and cold_reservoir) which are not linked, if I change the heat exchange length in the tank "cold_reservoir" from 50 to 200 m, the result is that the temperature of the fluid exiting from the heat exchanger of the other tank "hot_reservoir" changes (it gets lower). So changing something in tank 2, has a consequence in tank 1, even if they are not connected whatsoever. I don't understand the reason. Has anyone got an idea of what might have happened? Thank you in advance for any suggestion. Tiziano Terlizzese -- *********************************************************************** Thermal Energy System Specialists (TESS), LLC David BRADLEY 22 N. Carroll Street - Suite 370 Partner Madison, WI 53703 USA P: +1.608.274.2577 F: +1.608.278.1475 E-mail: bradley@tess-inc.com Web Pages: http://www.tess-inc.com and http://www.trnsys.com *********************************************************************** |