<div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">Hi</span><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">I'm a student at Aarhus University in Denmark. I'm trying to create a Contam model, where I have a section of a building with an atrium, where I want to use natural ventilation during summer to ventilate the rooms. </div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">I use Contam3.1 and TRNSYS 17 to couple Type56 and Type98 with each other. The coupling is going as planned. I have used constant controllers in Contam to get manual inputs, so I can vary the opening area of my paths. When I manually set the inputs from the controllers to have a value (e.g. 1) in Type98 everything is well (I get values of the flow), and when I try to connect it to an equation with a constant value, I still have a flow. But when I connect the input values to an equation with a variable value (e.g. from 1 if the outdoor temperature is 17C and above and 0 otherwise) I don't get any flow (looking over 8760 hr) - it is as if it can't read variable values. </div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Now when I copy everything but just use Type97 instead of Type98 and use a variable input value for the controller I get a flow. The only thing is, I get a convergence error because the Type56 isn't converging. This gives me some pretty huge errors when I compare my TRNSYS-Type98 model with TRNSYS-Type97 model. </div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">My questions is, I really want to use Type98, is there any way I can fix the problems with the model not accepting variable input-control-signals? and if nothing can be done, how can I fix the convergence problem?</div><span style="font-family:arial,sans-serif;font-size:13px"><font color="#888888"><div><br></div>-- <br><div dir="ltr"><div>Regards</div><div>Donya Sheikh Khan</div></div></font></span><div><br></div>-- <br><div dir="ltr"><div>Med venlig hilsen</div><div>Donya Sheikh Khan</div><div><br></div></div>
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