Dear all,
I'm using the type 534 storage tank of the TESS libraries. I made a small change in the code, I set the maximum number of ports to 20. Beside other components I use an online plotter with file to see and print the tank nodal temperatures. The system runs ok, but if I change the double port of the solar circle I get an invalid floating point operation error. This happens only if I have the respective plotter switched on and the tank energy balance error connected to the plotter. As soon as I switch off the plotter or disconnect the balance error everything is alright. In the output file of the plotter I get normal values for the balance error and at some times it is written "NaN". Those are probably the times where I get the error. This is no problem for me as I don't necessarily need the balance error and so I don't need real help from you. I am just curious what the reason might be and if anybody of you ended up with the same behavior. Thanks for any replies Jens Apel Technical University of Berlin
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