Francesco,
Comments below...
On Mon, Jul 3, 2017 at 8:46 AM, fpasserini.tn@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Hello, JimThe source/condenser temperature is constant because the PlantComponent:TemperatureSource object is used. The calculated output is constant. I have recalculate the output in excel, considering the parameters used for the curve, and the polynomial formula is calculated by EnergyPlus properly. Ââ??"Properly" should mean that E+ is using the â??actual chilled water temp and actual condenser water temp. Is that the case?ÂThe strange issue is that the leaving chilled water temperature used in the calculation is not taken from the dynamic simulation but it is the â??Reference Cooling Mode Leaving Chilled Water Temperatureâ??.â?? Is the setpoint manager value different than the "reference" temperature?â??I have plotted the â??Cooling Mode Electric Input to Cooling Output Ratio Function of Temperatureâ?? (CHILLERHEATERCLGEIRFT) too and Iâ??m attaching it now. As for that curve, the temperature 6°C, which is the setpoint manager temperature, is considered as leaving chilled water temperature!?As you can see in the second picture, the chiller-heater is working in cooling mode only one hour. Therefore the setpoint manager temperature is not met.â?? You'll need to determine why the chiller does not operate for more than one hour. That may â??be part of the reason for the curve output problem.Best Regards--James V Dirkes II, CEO / President
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Posted by: Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
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