Ismail,
You'd have to look at the list file to know for certain what the problem is but my guess is that the system isn't converging a lot of the time. I imagine that the zone RH goes above 70% so the fan turns on, at which point the zone RH drops below 70% so the fan turns back on, which makes the zone RH go back above 70%. You need to make sure that you're using a controller that has hysteresis (a deadband) and that you are using a short timestep (one minute perhaps).
kind regards,
David
On 07/12/2017 04:27, Ismail OUHALLOU
via TRNSYS-users wrote:
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Dear Tnsys users,
I want to simulate an AHU building integrated using type 112b. Control signal of type 112b is: The fan (type 112b) is to be ON if the relative humidity of a zone is greater than 70%.When I run simulation, it gets blocked at a given time as shawn in figure below:
Where does the problem come from ?
Thanks in advanceIsmail
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************************************************Ismail OUHALLOU
Green building & Sustainability consultant
MoroccoP:+212 620 548 116F:+212 522 326 440
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-- *************************** 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