Hello again, I apologize for opening so many questions, but I am in desperate need of help since apparently noone in my university knows how to model energy building using openstudio and energy plus.
Anyway, as I have written in other questions, I have a AHU system serving a simple model (4 thermal zones), the AHU was modified by me to have, on the heating side, 3 loops linked toghether: the heating coil is connected to a heat exchanger that is linked to a district heating heat source. The cooling side has the chilling coil linked to a absorbtion chiller which is connected to a single speed cooling tower.
Now, when I run the simulation I have no unmet hours, which should be great, but the problem arise to the heating loads. Infact, when I analyze the HVAC load profile, I can see that I have a lot of heating request also during hot months (the building is located in Genoa-Italy, which has a july mean temperature of 29 °C) while the cooling load remain very low, both in cold months as well as hot ones.
For clarity purposes I will uploads the 4 images regarding the loops and the HVAC load profile graph.
My question is: is the software simulation correct? Have I committed any error during the absorption chiller modeling phase?
I have tryed to refer both the engineering references here and the input output guide here. One big question is: what are the nodes that I need to specify for the heat generator? I have tryed to edit the .idf file, linking the chiller to the HX-district heating loop, but the simulation fails and I get this error:
"ABSORPTION CHILLER" was not found on any plant loops
Sorry for the wall of text, and many thanks to everybody who wants to contribute making a young engineer happy!
Federico
