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Michael, My apologies if you already got a response about this. Yes, you can set the initial temperature of the tank; the derivatives tab sets the initial value of each node. Be careful using Type60; there is a question that you must answer at the bottom of both the "output" and "derivative." The questions ask for more or less the same information but the answer is different. On the output tab, you are asked how many tank nodes there are besides the top and bottom node (thus for a 5-node tank you would answer "3"). On the derivatives tab, they ask simply how many nodes there are (so you'd answer "5"). Best, David On 9/23/2011 14:12, Michael Markusch wrote: Hi, I use the type 60d only with the first heating element. At the simulationstart I set the temperature at inlet 1 on 10 C, but the temperature at outlet 1 is less than 10 C. After a while it is correct. How can I fix this? Is there a initial temperature of the thermal storage? Thanks, Michael -- *************************** 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 |