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Ilyas, In addition to making sure that there is enough thermal capacitance in your system, you need to look carefully at the timestep you choose. TRNSYS can make only one control decision per timestep. If you are running a system with a 1 hour timestep that means that if the decision is to turn on a heater then the heater will stay on for at least 1 hour, very likely overheating the space. I would recommend that you follow through the tutorial called "Temperature Level Control from Energy Rate Control" that can be found at http://sel.me.wisc.edu/trnsys/downloads/tutorials_and_examples/tutex17.htm. It addresses some of the issues that you are likely to find. Also, if you have access to the TESS HVAC library, you will find a lot of models of the devices that you need for heating and cooling building zones. kind regards, David
On 01/18/2017 11:41, Ilyas KHELIFA
KERFAH wrote:
-- *************************** 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 |